摘要：
The accurate and sensitive quantification of hydroxyl radical (·OH) and glucose is necessary for disease diagnosis and health guidance, but still challenging owing to the low concentration of ·OH and poor water solubility of fluorescent probes. In addition, fluorescent probes may cause secondary pollution to the environment. Here an organic cage was reported as a sensitive fluorescent probe for ·OH and glucose in aqueous solution without serious secondary pollution. The prepared organic cage with good water solubility showed specific redox affinity to ·OH in acidic condition, resulting in two oxidation stages of mild oxidation and subsequent oxidative degradation. Fluorescence around 485 nm enhanced remarkably in the first stage, and benzene ring in organic cage was degraded in the second stage. Based on the significant fluorescence enhancement, a sensitive fluorescence turn-on sensing method for ·OH was established within 90 s with the limit of detection (3 s/k , where s and k are the standard deviation for 10 replicate detections of blank and the slope of calibration function) of 5 nM. The recoveries of spiked ·OH in human serum and water samples ranged from 95.2 % to 102.7 %. After the glucose oxidase enzyme-Fenton reaction was involved, the ·OH detection was also applied to sensitive sensing of glucose with the limit of detection (3 s/k ) of 6 nM. The recoveries of spiked glucose in sugary drinks ranged from 96.2 % to 102.6 %. Furthermore, the proposed method would also be suitable for other hazardous substances and biomarkers which can produce hydrogen peroxide and further form ·OH via Fenton reaction.
The accurate and sensitive quantification of hydroxyl radical (·OH) and glucose is necessary for disease diagnosis and health guidance, but still challenging owing to the low concentration of ·OH and poor water solubility of fluorescent probes. In addition, fluorescent probes may cause secondary pollution to the environment. Here an organic cage was reported as a sensitive fluorescent probe for ·OH and glucose in aqueous solution without serious secondary pollution. The prepared organic cage with good water solubility showed specific redox affinity to ·OH in acidic condition, resulting in two oxidation stages of mild oxidation and subsequent oxidative degradation. Fluorescence around 485 nm enhanced remarkably in the first stage, and benzene ring in organic cage was degraded in the second stage. Based on the significant fluorescence enhancement, a sensitive fluorescence turn-on sensing method for ·OH was established within 90 s with the limit of detection (3 s/k , where s and k are the standard deviation for 10 replicate detections of blank and the slope of calibration function) of 5 nM. The recoveries of spiked ·OH in human serum and water samples ranged from 95.2 % to 102.7 %. After the glucose oxidase enzyme-Fenton reaction was involved, the ·OH detection was also applied to sensitive sensing of glucose with the limit of detection (3 s/k ) of 6 nM. The recoveries of spiked glucose in sugary drinks ranged from 96.2 % to 102.6 %. Furthermore, the proposed method would also be suitable for other hazardous substances and biomarkers which can produce hydrogen peroxide and further form ·OH via Fenton reaction.
期刊：
Journal of Electronic Materials,2025年54(1):712-717 ISSN：0361-5235
通讯作者：
Zhang, ZJ
作者机构：
[Zhang, Zhijian; Zhang, ZJ] Hengyang Normal Univ, Key Lab Funct Met Organ Cpds, Hengyang 421001, Peoples R China.;[Zhang, Zhijian; Zhang, ZJ] Hengyang Normal Univ, Key Lab Funct Organometall Mat Hunan Prov, Hengyang 421001, Peoples R China.;[Shi, Wei; Li, Xinghua] Collaborat Innovat Res Inst Hunan Prov, Hunan Prov Sci & Technol Affairs Ctr & Ind Technol, Changsha 410013, Hunan, Peoples R China.
通讯机构：
[Zhang, ZJ ] H;Hengyang Normal Univ, Key Lab Funct Met Organ Cpds, Hengyang 421001, Peoples R China.;Hengyang Normal Univ, Key Lab Funct Organometall Mat Hunan Prov, Hengyang 421001, Peoples R China.
关键词：
Ab initio calculation;magnetic properties;optical properties;two-dimensional gamma-GeSe;electronic properties
摘要：
Using ab initio calculations, the structural and photoelectric properties of gamma-GeSe with B, C, and N adsorption were systematically investigated. The atomic structure relaxations show that B, C, and N are preferentially located on the lower hexagonal hollow, upper hexagonal hollow, and on top of Se, respectively. The adsorption with B, C, and N can induce defective bands between the energy region n of the valence bands and the conduction bands, and all the systems with adatoms are magnetic, with 1 mu(B), 2 mu(B), and 1 mu(B) magnetic moments, respectively, which are mainly caused by the hybridization between adatoms and the adjacent Ge and Se atoms. Based on the spin-polarized band structure, we find that C-adsorbed gamma-GeSe is metallic, while gamma-GeSe with B and N adatoms is half-metallic, with 100% spin polarization at the Fermi level. Furthermore, owing to the electronic structural differences between spin-up and spin-down sections of B- and N-adsorbed gamma-GeSe, the light in the low-energy region (< 1.0 eV) can only cause electronic excitations in one spin channel, giving rise to interesting spin-polarized photoelectric properties. Our results suggest that gamma-GeSe with B, C, and N adsorption is a promising candidate for spintronic photoelectric device applications.
期刊：
Results in Engineering,2025年26:105171 ISSN：2590-1230
通讯作者：
Quanguo He
作者机构：
[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Organometall New Mat, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[He, Quanguo; Chen, Aiting; Zhou, Chuanqin; Tang, Nana; Shi, Shuting; He, QG] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.
通讯机构：
[He, QG ] H;Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.
关键词：
Co 9 S 8;reduced graphene oxide;electrochemical detection;tryptophan;uric acid;dopamine
摘要：
A cost-effective and simple electrochemical approach was developed for the simultaneous detection of tryptophan (Trp), uric acid (UA) and dopamine (DA). Through hydrothermal synthesis, Co 9 S 8 was combined with graphene oxide (GO) using physical ultrasound. Subsequently, the Co 9 S 8 -RGO/GCE was created by electrochemically reducing a Co 9 S 8 -GO dispersion after drop-coating it onto the GCE surface. The amalgamation of Co 9 S 8 with RGO conferred the sensor with remarkable sensitivity, outstanding selectivity, and robust catalytic prowess towards DA, UA and Trp. The ternary mixture exhibited notable peak separations of up to 160 mV, 278 mV, and 438 mV between DA–UA, UA–Trp, and DA–Trp, respectively. The linear calibration ranges spanned 0.1–2.0 μM and 2.0–10 μM for DA, 0.06–10 μM for UA, and 0.02–10 μM for Trp, with matching 0.04 µM for DA, 0.02 µM for UA, and 6.0 nM for Trp detection limits (S/N=3). Moreover, the sensor's effective use in the identification of DA, UA and Trp in authentic samples yielded satisfactory results.
A cost-effective and simple electrochemical approach was developed for the simultaneous detection of tryptophan (Trp), uric acid (UA) and dopamine (DA). Through hydrothermal synthesis, Co 9 S 8 was combined with graphene oxide (GO) using physical ultrasound. Subsequently, the Co 9 S 8 -RGO/GCE was created by electrochemically reducing a Co 9 S 8 -GO dispersion after drop-coating it onto the GCE surface. The amalgamation of Co 9 S 8 with RGO conferred the sensor with remarkable sensitivity, outstanding selectivity, and robust catalytic prowess towards DA, UA and Trp. The ternary mixture exhibited notable peak separations of up to 160 mV, 278 mV, and 438 mV between DA–UA, UA–Trp, and DA–Trp, respectively. The linear calibration ranges spanned 0.1–2.0 μM and 2.0–10 μM for DA, 0.06–10 μM for UA, and 0.02–10 μM for Trp, with matching 0.04 µM for DA, 0.02 µM for UA, and 6.0 nM for Trp detection limits (S/N=3). Moreover, the sensor's effective use in the identification of DA, UA and Trp in authentic samples yielded satisfactory results.
期刊：
FRONTIERS IN ONCOLOGY,2025年15:1509810 ISSN：2234-943X
通讯作者：
Tang, Si-Ping;Fu, D
作者机构：
[Tang, Si-Ping; Zhang, Shu-Ping; Fu, Da; Zhao, Jing-Jun; Gu, Biao; Zhai, Peng-Lei] Hengyang Normal Univ, Key Lab Funct Organometall Mat Coll Hunan Prov, Coll Chem & Mat Sci, Hengyang, Peoples R China.;[Tang, Xiao-Mei; Fu, Da; Lu, Cui-Ni; Chen, Meng-Min; Yang, Qin-Xin; Zhai, Peng-Lei; Liu, Jia] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Dept Gen Surg,Pancreat Dis Ctr, Shanghai, Peoples R China.;[Chen, Meng-Min] Shanghai Jiao Tong Univ, Res Inst Pancreat Dis, Sch Med, Shanghai Key Lab Translat Res Pancreat Neoplasms, Shanghai, Peoples R China.;[Chen, Meng-Min] Shanghai Jiao Tong Univ, Inst Translat Med, State Key Lab Oncogenes & Related Genes, Shanghai, Peoples R China.;[Wang, Qi] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Dept Urol, Shanghai, Peoples R China.
通讯机构：
[Tang, SP; Fu, D ] H;Hengyang Normal Univ, Key Lab Funct Organometall Mat Coll Hunan Prov, Coll Chem & Mat Sci, Hengyang, Peoples R China.;Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Dept Gen Surg,Pancreat Dis Ctr, Shanghai, Peoples R China.
关键词：
drug prediction;genomic alterations;immunotherapy;liquid-liquid phase separation;tumor immune microenvironment
摘要：
BACKGROUND: Growing evidence indicates that abnormal liquid-liquid phase separation (LLPS) can disrupt biomolecular condensates, contributing to cancer development and progression. However, the influence of LLPS on the prognosis of head and neck squamous cell carcinoma (HNSCC) patients and its effects on the tumor immune microenvironment (TIME) are not yet fully understood. Therefore, we aimed to categorize patients with HNSCC based on LLPS-related genes and explored their multidimensional heterogeneity. METHODS: We integrated the transcriptomic data of 3,541 LLPS-related genes to assess the LLPS patterns in 501 patients with HNSCC within The Cancer Genome Atlas cohort. Subsequently, we explored the differences among the three LLPS subtypes using multi-omics analysis. We also developed an LLPS-related prognostic risk signature (LPRS) to facilitate personalized and integrative assessments and then screened and validated potential therapeutic small molecule compounds targeting HNSCC via experimental analyses. RESULT: By analyzing the expression profiles of 85 scaffolds, 355 regulators, and 3,101 clients of LLPS in HNSCC, we identified three distinct LLPS subtypes: LS1, LS2, and LS3. We confirmed notable differences among these subtypes in terms of prognosis, functional enrichment, genomic alterations, TIME patterns, and responses to immunotherapy. Additionally, we developed the LPRS, a prognostic signature for personalized integrative assessments, which demonstrated strong predictive capability for HNSCC prognosis across multiple cohorts. The LPRS also showed significant correlations with the clinicopathological features and TIME patterns in HNSCC patients. Furthermore, the LPRS effectively predicted responses to immune checkpoint inhibitor therapy and facilitated the screening of potential small-molecule compounds for treating HNSCC patients. CONCLUSION: This study presents a new classification system for HNSCC patients grounded in LLPS. The LPRS developed in this research offers improved personalized prognosis and could optimize immunotherapy strategies for HNSCC.
作者机构：
College of Chemistry and Materials Science, Hengyang Normal University, Hunan 421008, PR China;[Ye-Tang Pan; Rongjie Yang] National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China;[Lubin Liu] Key Lab of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, People’s Republic of China;Centre for Future Materials, University of Southern Queensland, Springfield 4300, Australia;School of Agriculture and Environmental Science, University of Southern Queensland, Springfield 4300, Australia
通讯机构：
[Ye-Tang Pan] N;[Lubin Liu] K;Key Lab of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, People’s Republic of China<&wdkj&>National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
摘要：
Biomass resources are natural polymeric materials that are abundant, affordable, non-toxic and renewable. Although they find diverse applications in both everyday life and high-tech materials, their use is often constrained by the associated fire hazards. To address this issue, there is a growing interest in the development of flame-retardant biomass polymeric materials. Metal-organic frameworks (MOFs) consist of transition metal species, flame-retardant elements and potential carbon sources, allowing for easy adjustment of their structure and properties. This versatility makes MOFs and their derivatives and hybrids highly attractive for flame retardancy studies. Despite their distinctive properties, MOFs alone may not fully satisfy the demands of commercial flame-retardant applications. The combination of MOFs with biomass materials has been identified as a promising strategy for developing efficient flame-retardant biomass nanocomposites. This innovative approach aims to address the limitations of MOFs by capitalizing on synergistic effects. This review highlights recent advancements and strategies in MOF-based flame retardants incorporating biomass materials, and it elucidates the flame-retardant mechanisms of MOF/biomass nanocomposites to inform future design efforts in the field. Furthermore, the review discusses the current challenges and prospects in this field, aiming to provide a succinct yet comprehensive overview for researchers to quickly grasp the latest developments.
Biomass resources are natural polymeric materials that are abundant, affordable, non-toxic and renewable. Although they find diverse applications in both everyday life and high-tech materials, their use is often constrained by the associated fire hazards. To address this issue, there is a growing interest in the development of flame-retardant biomass polymeric materials. Metal-organic frameworks (MOFs) consist of transition metal species, flame-retardant elements and potential carbon sources, allowing for easy adjustment of their structure and properties. This versatility makes MOFs and their derivatives and hybrids highly attractive for flame retardancy studies. Despite their distinctive properties, MOFs alone may not fully satisfy the demands of commercial flame-retardant applications. The combination of MOFs with biomass materials has been identified as a promising strategy for developing efficient flame-retardant biomass nanocomposites. This innovative approach aims to address the limitations of MOFs by capitalizing on synergistic effects. This review highlights recent advancements and strategies in MOF-based flame retardants incorporating biomass materials, and it elucidates the flame-retardant mechanisms of MOF/biomass nanocomposites to inform future design efforts in the field. Furthermore, the review discusses the current challenges and prospects in this field, aiming to provide a succinct yet comprehensive overview for researchers to quickly grasp the latest developments.
作者机构：
[Liu, Xing; Lai, Hua; Dai, Rui; Li, Junhua; Hu, Longxin] Hengyang Normal Univ, Coll Hunan Prov, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Liu, Xing; Lai, Hua; Dai, Rui; Li, Junhua; Hu, Longxin] Hengyang Normal Univ, Coll Hunan Prov, Key Lab Organometall New Mat, Hengyang 421008, Peoples R China.;[Liu, Xing; Lai, Hua; Dai, Rui; Li, Junhua; Hu, Longxin; Liu, X] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Liu, X ] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Cd 0.5 Zn 0.5 S;CoS;S2 adsorption;Photocatalytic H2 evolution
摘要：
Designing surface phase is an efficient strategy to facilitate charge separation and photocatalytic H 2 -evolution performance. In this work, CoS cocatalysts were intimately anchored on Cd 0.5 Zn 0.5 S (denoted as CZS) photocatalyst via in-situ precipitate transformation in S 2− /SO 3 2− solution with cobaltous phosphate (CoPi) as a precursor, meanwhile, S 2− ions were adsorbed on the CZS to form a sulfur-rich surface (denoted as CZS-S). The photocatalytic H 2 -evolution rate of CoS/CZS-S is 2.02 mmol·g −1 ·h −1 in 0.1 M Na 2 S/Na 2 SO 3 sacrificial agent system. In addition, CoS/CZS-S exhibits excellent stability in both Na 2 S/Na 2 SO 3 and lactic acid system. The theoretical calculations (DFT) and experimental results reveal that amorphous CoS can work as a highly effective cocatalyst for H 2 evolution reaction and the intimate contact between CZS and CoS facilitates the photoelectrons transfer from CZS to CoS. The adsorbed S 2− ions mainly work as effective hole acceptors. As a result of the synergism of CoS and adsorbed S 2− ions, the boosted separation and immigration of photoelectrons and photoholes and high photocatalytic H 2 -evolution performance of CoS/CZS-S are realized. The present work highlights simultaneous reinforcing reduction and oxidation half-reaction dynamics via a facile and economic surface strategy to achieve efficient solar H 2 -evolution from H 2 O splitting.
Designing surface phase is an efficient strategy to facilitate charge separation and photocatalytic H 2 -evolution performance. In this work, CoS cocatalysts were intimately anchored on Cd 0.5 Zn 0.5 S (denoted as CZS) photocatalyst via in-situ precipitate transformation in S 2− /SO 3 2− solution with cobaltous phosphate (CoPi) as a precursor, meanwhile, S 2− ions were adsorbed on the CZS to form a sulfur-rich surface (denoted as CZS-S). The photocatalytic H 2 -evolution rate of CoS/CZS-S is 2.02 mmol·g −1 ·h −1 in 0.1 M Na 2 S/Na 2 SO 3 sacrificial agent system. In addition, CoS/CZS-S exhibits excellent stability in both Na 2 S/Na 2 SO 3 and lactic acid system. The theoretical calculations (DFT) and experimental results reveal that amorphous CoS can work as a highly effective cocatalyst for H 2 evolution reaction and the intimate contact between CZS and CoS facilitates the photoelectrons transfer from CZS to CoS. The adsorbed S 2− ions mainly work as effective hole acceptors. As a result of the synergism of CoS and adsorbed S 2− ions, the boosted separation and immigration of photoelectrons and photoholes and high photocatalytic H 2 -evolution performance of CoS/CZS-S are realized. The present work highlights simultaneous reinforcing reduction and oxidation half-reaction dynamics via a facile and economic surface strategy to achieve efficient solar H 2 -evolution from H 2 O splitting.
期刊：
Journal of Inorganic Biochemistry,2025年262:112756 ISSN：0162-0134
通讯作者：
Wujiu Jiang<&wdkj&>Yiyuan Peng
作者机构：
[Jiang, Wujiu] Key Laboratory of Green Chemistry, Jiangxi Province, College of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi 330022, China;[Jiang, Wujiu] Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Organometallic New Materials, College of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, Hunan 421008, China. Electronic address: jiang59@jxnu.edu.cn;[Tan, Yuxing; Luo, Qing; Huang, Wei] Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Organometallic New Materials, College of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, Hunan 421008, China;[Peng, Yiyuan] Key Laboratory of Green Chemistry, Jiangxi Province, College of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi 330022, China. Electronic address: yypeng@jxnu.edu.cn
通讯机构：
[Wujiu Jiang; Yiyuan Peng] K;Key Laboratory of Green Chemistry, Jiangxi Province, College of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi 330022, China<&wdkj&>Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Key Laboratory of Organometallic New Materials, College of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, Hunan 421008, China<&wdkj&>Key Laboratory of Green Chemistry, Jiangxi Province, College of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
摘要：
Diorganotin acylhydrazone complexes with mitochondrial targeting demonstrate significant potential as replacements for platinum-based complexes due to their potent anticancer properties. Twelve methylphenyltin arylformylhydrazone complexes have been synthesized by microwave “one-pot” reaction. The complexes have been characterized by FT-IR, multinuclear NMR (1H, 13C, and 119Sn), TGA, and HRMS. Crystal structures were determined for 10 out of the 12 complexes under study. Structures 1 through 8, 10 and 12 possessed a central symmetric structure of a di-nuclear Sn2O2 tetrahedral ring. All complexes were tested for their inhibitory activity against human cell lines NCI-H460, MCF-7, and HepG2. Complex 8 exhibited the most effective inhibitory effect on HepG2 cells, with an IC50 value of 1.34 ± 0.04 μM. Preliminary studies on the anticancer mechanism suggest that complex 8 induces apoptosis in HepG2 cells via the mitochondrial pathway, accompanied by G2/M phase cell cycle arrest.
Diorganotin acylhydrazone complexes with mitochondrial targeting demonstrate significant potential as replacements for platinum-based complexes due to their potent anticancer properties. Twelve methylphenyltin arylformylhydrazone complexes have been synthesized by microwave “one-pot” reaction. The complexes have been characterized by FT-IR, multinuclear NMR (1H, 13C, and 119Sn), TGA, and HRMS. Crystal structures were determined for 10 out of the 12 complexes under study. Structures 1 through 8, 10 and 12 possessed a central symmetric structure of a di-nuclear Sn2O2 tetrahedral ring. All complexes were tested for their inhibitory activity against human cell lines NCI-H460, MCF-7, and HepG2. Complex 8 exhibited the most effective inhibitory effect on HepG2 cells, with an IC50 value of 1.34 ± 0.04 μM. Preliminary studies on the anticancer mechanism suggest that complex 8 induces apoptosis in HepG2 cells via the mitochondrial pathway, accompanied by G2/M phase cell cycle arrest.
作者机构：
[Jia-Min Hu; Wen-Xia Su; Wei-Min Qin; Zhixuan Wu; Hanqin Zou; Zhiqin Ruan] School of Chemistry, South China Normal University, Guangzhou, 510006, People's Republic of China;[Zhongliang Li] Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Material Science, Hengyang Normal University, Hengyang, 421008, People's Republic of China;[Yue-Peng Cai] School of Chemistry, South China Normal University, Guangzhou, 510006, People's Republic of China. caiyp@scnu.edu.cn;[Yue-Peng Cai] Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials, Guangzhou, 510006, People's Republic of China. caiyp@scnu.edu.cn;[Kang Li] School of Chemistry, South China Normal University, Guangzhou, 510006, People's Republic of China. likang5@m.scnu.edu.cn
通讯机构：
[Cai, Yue-Peng; Zheng, Qifeng; Li, Kang] S;School of Chemistry, South China Normal University, Guangzhou, 510006, People's Republic of China.;Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials, Guangzhou, 510006, People's Republic of China.;School of Chemistry, South China Normal University, Guangzhou, 510006, People's Republic of China. qifeng.;Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials, Guangzhou, 510006, People's Republic of China. qifeng.
关键词：
Cavity-induced anion-trapping;Homogeneous Li+ flux;Lithium metal battery;Porous organic cage;Quasi-solid-state electrolyte
摘要：
Porous organic cages (POCs) with permanent porosity and excellent host-guest property hold great potentials in regulating ion transport behavior, yet their feasibility as solid-state electrolytes has never been testified in a practical battery. Herein, we design and fabricate a quasi-solid-state electrolyte (QSSE) based on a POC to enable the stable operation of Li-metal batteries (LMBs). Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC, the resulting POC-based QSSE exhibits a high Li(+) transference number of 0.67 and a high ionic conductivity of 1.25 × 10(-4) S cm(-1) with a low activation energy of 0.17eV. These allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000h. As a proof of concept, the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85% capacity retention after 1000 cycles. Therefore, our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems, such as Na and K batteries.
期刊：
Journal of Power Sources,2025年625:235662 ISSN：0378-7753
通讯作者：
Xiaoguang Ma
作者机构：
[Sui, Huiting; Feng, Lixun; Wei, Jianbiao; Ma, Xiaoguang] School of Physics and Optoelectronic Engineering, Ludong University, Yantai, 264000, China;[Xiao, Shibing] College of Chemistry and Material Science, Hengyang Normal University, Hengyang, 421008, China;[Wu, Haitao] School of Environmental and Material Engineering, Yantai University, Yantai, 264005, China
通讯机构：
[Xiaoguang Ma] S;School of Physics and Optoelectronic Engineering, Ludong University, Yantai, 264000, China
关键词：
Energy storage;Relaxor ferroelectrics;Thin film;Stress field
摘要：
In this study, a preparation of hollow nanoscale tubular polysulfide Co 9 S 8 is reported, along with its use in building an electrochemical sensor that can detect dopamine (DA). Utilizing electrochemically reduced graphene oxide (ErGO) as a substrate, the Co 9 S 8 -ErGO/GCE sensor was made by attaching Co 9 S 8 nanotubes to a glassy carbon electrode (GCE) surface. The use of ErGO in the sensor fabrication process not only improves the conductivity but also effectively prevents the aggregation of Co 9 S 8 . A large number of hollow Co 9 S 8 nanotubes are anchored on ErGO, providing more catalytic active sites for electrode reactions. The constructed sensor shows remarkable DA detection ability, with a notable rise in peak current, thanks to the synergistic action of Co 9 S 8 and ErGO. This sensor has a lower detection limit of 4.0 nM and a wide linear range of 0.01–0.1 µM, 0.1–2.0 µM, and 2.0–10 µM. It is also possible to quantify DA in actual samples using Co 9 S 8 -ErGO/GCE, meeting clinical requirements for reproducibility, selectivity and accuracy.
In this study, a preparation of hollow nanoscale tubular polysulfide Co 9 S 8 is reported, along with its use in building an electrochemical sensor that can detect dopamine (DA). Utilizing electrochemically reduced graphene oxide (ErGO) as a substrate, the Co 9 S 8 -ErGO/GCE sensor was made by attaching Co 9 S 8 nanotubes to a glassy carbon electrode (GCE) surface. The use of ErGO in the sensor fabrication process not only improves the conductivity but also effectively prevents the aggregation of Co 9 S 8 . A large number of hollow Co 9 S 8 nanotubes are anchored on ErGO, providing more catalytic active sites for electrode reactions. The constructed sensor shows remarkable DA detection ability, with a notable rise in peak current, thanks to the synergistic action of Co 9 S 8 and ErGO. This sensor has a lower detection limit of 4.0 nM and a wide linear range of 0.01–0.1 µM, 0.1–2.0 µM, and 2.0–10 µM. It is also possible to quantify DA in actual samples using Co 9 S 8 -ErGO/GCE, meeting clinical requirements for reproducibility, selectivity and accuracy.
作者机构：
[Liu, B; Wang, Cheng-Yong; Zhang, Fu-Xing; Xu, Zhi-Feng; Liu, Bang; Wang, Zhi-Qiang; Yu, Jiang-Xi; Tang, Jie] Hengyang Normal Univ, Coll Hunan Prov, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov,Key Lab Or, Hengyang 421008, Peoples R China.
通讯机构：
[Liu, B ] H;Hengyang Normal Univ, Coll Hunan Prov, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov,Key Lab Or, Hengyang 421008, Peoples R China.
摘要：
Integrating fluorine into heterocyclic structures via cyclization reactions under metal-free conditions is attractive for organic synthesis. Herein, we describe solvent dependent fluorinative cyclizations of o-hydroxyarylenaminones, which were promoted by H2O and NFSI under metal-free conditions, to furnish 2,3-substituted chromanones. Di- and monofluorinated 2-hydroxyl chromanones could be achieved selectively in a THF-H2O or EtOH-H2O system at ambient temperature under an air atmosphere.
摘要：
Carbon-based nanocomposites with atomically dispersed transition metals have been found to exhibit excellent electrocatalytic activity toward the oxygen evolution reaction (OER). Yet, the low metal loads and severe electrooxidation of carbon greatly limit the activity and stability. Reducing the pyrolysis temperature can weaken the aggregation of metal atoms, and using carbon aerogel as a 3D scaffold can maximize accessible metal sites. Simultaneously, a lower pyrolysis temperature can provide a higher oxygen content for the carbon substrate and enhance resistance against electrooxidation. Herein, carbon aerogels embedded with Fe–Ni dual atom centers (NCA/FeNi-500) are synthesized by controlled pyrolysis at 500 °C of a chitosan hydrogel composite along with FeCl 3 and NiCl 2 . With an atomically dispersed metal loading of 4.35 wt %, NCA/FeNi-500 exhibits a remarkable OER catalytic activity in both alkaline water and simulated alkaline seawater, featuring a low overpotential of only +294 and +306 mV to reach the current density of 10 mA cm –2 , respectively, along with excellent long-term stability during overall water splitting, a performance much better than those with commercial RuO 2 . First-principles calculations show that adjacent NiN 4 sites effectively promote the OER kinetics at FeN 4 sites by reducing the energy barrier of O–O formation. This is also manifested in alkaline saline water splitting.
摘要：
In this work, a fascinating nanocomposite based on manganese-cobalt sulfide (MnS/Co3S4) wrapped by electrochemically reduced graphene oxide (ERGO) has been successfully synthesized on the surface of a glassy carbon electrode (GCE) by a facile hydrothermal assisted electrochemical reduction method. The modified electrode was fully characterized by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The morphological results illustrate that MnS/Co3S4 are embedded in the ERGO layers, resulting in a rough surface and three-dimensional (3D) microstructure. The as-synthesized MnS/Co3S4-ERGO/GCE displays distinctly enhanced electrocatalytic activity for vanillin oxidation in comparison with that of the ERGO/GCE and MnS/Co3S4/GCE. Therefore, the MnS/Co3S4-ERGO/GCE can be used as an effective electrochemical sensing platform for the sensitive determination of vanillin, and the fabricated sensor displays a wide linear range of 0.02-1.00 mmol/L and 1.0-40.0 mmol/L, low detection limit of 4.0 nmol/L and satisfactory recoveries between 98.0% and 102.8%. (c) 2025BeijingAcademyofFoodSciences.Publishingservic esbyElsevierb.V.onbehalfofKeAiCommunicationsCo.,Ltd.ThisisanopenaccessarticleundertheCCbY-NC-NDlicense(http://creativecommons.org/licenses/by-nc-nd/4.0/
摘要：
Dual-mode sensors integrating multifunctional nanozymes are highly sought by the analytical chemistry community. However, rational design of nanozymes containing both metal single atoms (SAs) and atomic clusters (ACs) for dual-mode sensing remains a challenge. Herein, we designed and synthesized a novel Cu-based nanozyme system based on Cu SAs/ACs anchored on a N-doped chitosan-derived carbon support (CuSAs/ACs@NC) using a tandem ion imprinting-pyrolysis-etching strategy. Compared with Cu SAs or Cu nanoparticles on the chitosan-derived carbon support, the proposed CuSAs/ACs@NC nanozyme exhibits superior electrocatalytic activity and peroxidase-mimicking activity. Benefitting from the synergistic effect of Cu SAs and ACs which enhances electron transport, the CuSAs/ACs@NC nanozyme allows electrochemical-colorimetric dual-mode detection of paracetamol (PA) based on the amplification of the electrochemical signal of PA and the inhibition effect of PA on peroxidase activity, respectively. The linear range of the electrochemical mode is 2.00–473.00 μM with a detection limit of 0.48 μM, while that of the colorimetric mode is 0.25–100.00 μM with a detection limit of 0.10 μM. Moreover, this dual-mode sensor exhibits favorable reproducibility (relative standard deviation ≤ 4.00 %), stability (maintaining stable after 4 months of storage), and accuracy (recoveries of 91.5–114.9 %). Satisfyingly, the developed dual-mode method allows accurate PA detection in commercial drugs with relative deviation below 1.5 %. This work presents a new strategy for the preparation of SAs/ACs as multifunctional nanozymes for sensing, drug monitoring, and clinical diagnosis.
Dual-mode sensors integrating multifunctional nanozymes are highly sought by the analytical chemistry community. However, rational design of nanozymes containing both metal single atoms (SAs) and atomic clusters (ACs) for dual-mode sensing remains a challenge. Herein, we designed and synthesized a novel Cu-based nanozyme system based on Cu SAs/ACs anchored on a N-doped chitosan-derived carbon support (CuSAs/ACs@NC) using a tandem ion imprinting-pyrolysis-etching strategy. Compared with Cu SAs or Cu nanoparticles on the chitosan-derived carbon support, the proposed CuSAs/ACs@NC nanozyme exhibits superior electrocatalytic activity and peroxidase-mimicking activity. Benefitting from the synergistic effect of Cu SAs and ACs which enhances electron transport, the CuSAs/ACs@NC nanozyme allows electrochemical-colorimetric dual-mode detection of paracetamol (PA) based on the amplification of the electrochemical signal of PA and the inhibition effect of PA on peroxidase activity, respectively. The linear range of the electrochemical mode is 2.00–473.00 μM with a detection limit of 0.48 μM, while that of the colorimetric mode is 0.25–100.00 μM with a detection limit of 0.10 μM. Moreover, this dual-mode sensor exhibits favorable reproducibility (relative standard deviation ≤ 4.00 %), stability (maintaining stable after 4 months of storage), and accuracy (recoveries of 91.5–114.9 %). Satisfyingly, the developed dual-mode method allows accurate PA detection in commercial drugs with relative deviation below 1.5 %. This work presents a new strategy for the preparation of SAs/ACs as multifunctional nanozymes for sensing, drug monitoring, and clinical diagnosis.
摘要：
The two star-shaped trimetal ethynyl complexes benzo[1,2-b:3,4-b':5,6-b'']trithiophene (BTT)][MCp*(dppe) 2 ] 3 ( 3 , M = Ru; 4 , M = Fe) are synthesized and characterized by NMR spectroscopy, elemental analysis and X-ray single crystal diffraction. The influence of different metals linked with identical bridge core on the electronic properties of 3 and 4 under various redox states are studied using electrochemical (cyclic and square wave voltammetry) and spectroelectrochemical (in situ UV-Vis-NIR and IR spectroscopy) methods and DFT calculations. Cyclic voltammetry experiments of 3 and 4 have evidenced weak electronic interaction among three terminal groups. Gradual oxidation processes of 3 and 4 characterized by IR and UV-Vis-NIR spectra changes feature small ν(C C) shifts and also don't lead to the appearance of broad NIR absorptions, which implied that only weak communication exists in the mixed-valent forms. In addition, probing the electronic structure of neutral molecules 3 and 4 and corresponding singly-oxidized species by DFT calculations including spin density distributions confirmed effectively the dominant bridge-localized oxidation characteristics.
The two star-shaped trimetal ethynyl complexes benzo[1,2-b:3,4-b':5,6-b'']trithiophene (BTT)][MCp*(dppe) 2 ] 3 ( 3 , M = Ru; 4 , M = Fe) are synthesized and characterized by NMR spectroscopy, elemental analysis and X-ray single crystal diffraction. The influence of different metals linked with identical bridge core on the electronic properties of 3 and 4 under various redox states are studied using electrochemical (cyclic and square wave voltammetry) and spectroelectrochemical (in situ UV-Vis-NIR and IR spectroscopy) methods and DFT calculations. Cyclic voltammetry experiments of 3 and 4 have evidenced weak electronic interaction among three terminal groups. Gradual oxidation processes of 3 and 4 characterized by IR and UV-Vis-NIR spectra changes feature small ν(C C) shifts and also don't lead to the appearance of broad NIR absorptions, which implied that only weak communication exists in the mixed-valent forms. In addition, probing the electronic structure of neutral molecules 3 and 4 and corresponding singly-oxidized species by DFT calculations including spin density distributions confirmed effectively the dominant bridge-localized oxidation characteristics.
期刊：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2025年340:126368 ISSN：1386-1425
通讯作者：
Chen, Wen;Zhang, Yuan
作者机构：
[Wang, Xuanyuan; Liu, Mengqin; Xiong, Zhimei; Zhang, Jingting; Sun, Leying; Xu, Yihong; Jiang, Lu; Li, Yingzi; Huang, Leyuan] College of Chemistry and Material Science, Hengyang Normal University, Hengyang 421001, PR China;[Chen, Wen] College of Chemistry and Material Science, Hengyang Normal University, Hengyang 421001, PR China. Electronic address: wenchen@hnu.edu.cn;[Liu, Shuangling] State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082 Hunan, PR China;[Zhang, Yuan] College of Chemistry and Material Science, Hengyang Normal University, Hengyang 421001, PR China. Electronic address: zhangyuan1@hnu.edu.cn
通讯机构：
[Chen, Wen; Zhang, Yuan] C;College of Chemistry and Material Science, Hengyang Normal University, Hengyang 421001, PR China. Electronic address:
摘要：
Mitophagy is an indispensable cellular process that plays a crucial role in regulating mitochondrial quality control and cellular metabolism. Therefore, monitoring the changes in the mitochondrial and lysosomal microenvironment during the mitophagy process is extremely important. However, existing mitophagy probes only target changes in a single indicator (viscosity, pH value, or polarity) within the microenvironment, which may reduce the selectivity and accuracy of assessing mitophagy in complex biological settings. To address this, we have developed a dual-channel detection near-infrared (NIR) fluorescent probe (ADMI). In vitro analysis experiments have shown that ADMI not only responds to pH and activates the NIR fluorescence channel but also that the green fluorescence channel exhibits high sensitivity to changes in polarity. This dual-response mechanism probe enables dual fluorescent detection of pH and polarity, providing a highly promising tool for monitoring the microenvironment of mitophagy in living cells. Ultimately, we applied ADMI to real-time monitoring of mitophagy induced by starvation or rapamycin, during which the decrease in pH and polarity resulted in a red shift in wavelength and increased fluorescence. Additionally, ADMI was able to observe changes in mitochondria during ferroptosis. This probe may serve as a useful tool for imaging mitophagy in living cells.
Mitophagy is an indispensable cellular process that plays a crucial role in regulating mitochondrial quality control and cellular metabolism. Therefore, monitoring the changes in the mitochondrial and lysosomal microenvironment during the mitophagy process is extremely important. However, existing mitophagy probes only target changes in a single indicator (viscosity, pH value, or polarity) within the microenvironment, which may reduce the selectivity and accuracy of assessing mitophagy in complex biological settings. To address this, we have developed a dual-channel detection near-infrared (NIR) fluorescent probe (ADMI). In vitro analysis experiments have shown that ADMI not only responds to pH and activates the NIR fluorescence channel but also that the green fluorescence channel exhibits high sensitivity to changes in polarity. This dual-response mechanism probe enables dual fluorescent detection of pH and polarity, providing a highly promising tool for monitoring the microenvironment of mitophagy in living cells. Ultimately, we applied ADMI to real-time monitoring of mitophagy induced by starvation or rapamycin, during which the decrease in pH and polarity resulted in a red shift in wavelength and increased fluorescence. Additionally, ADMI was able to observe changes in mitochondria during ferroptosis. This probe may serve as a useful tool for imaging mitophagy in living cells.
作者机构：
[Liu, Xiang; Yang, Qian; Ni, Wenjin; Liu, Jian; Li, Zhongliang; Tan, Liang; Fu, Jinfeng] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Ni, Wenjin; Liu, Jian; Li, Zhongliang; Tan, Liang] Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.;[Zhang, Jiaming] Xiangtan Univ, Sch Chem Engn, Xiangtan 411105, Peoples R China.
通讯机构：
[Ni, WJ; Liu, J ] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China.
摘要：
In this work, dual active-site Ti-incorporated metal-organic frameworks (MIL-125 and NH2-MIL-125) were synthesized by a simple solvothermal process and applied to prepare cyclohexanone oxime from cyclohexylamine oxidation. A low-temperature thermal calcination strategy was used for the modulation of surface properties while maintaining the crystal structure and morphology. The results demonstrated that novel bifunctional NH2-MIL-125@250 degrees C obtained from thermal calcination possessed a large surface area with both oxygen vacancies and surface hydroxyl-active sites, promoting the adsorption and activation of cyclohexylamine and oxygen molecules, respectively. Under the optimum conditions, the cyclohexylamine conversion was 44.3%, and the selectivity to cyclohexanone oxime was 83.0%. By comparison, the stability of MIL-125 and NH2-MIL-125 was investigated separately in cyclic tests, and the crystal structure and catalytic properties of NH2-MIL-125 have been shown to be more stable than those of MIL-125. Combined with density functional theory, it was further shown that NH2-MIL-125 displayed a higher adsorption and activation ability toward cyclohexylamine and oxygen than MIL-125 and had a more stable metal-organic ligand structure. Finally, a plausible reaction pathway for selective cyclohexylamine oxidation to cyclohexanone oxime was proposed. This work can give new insights into designing novel dual active-site catalysts for the efficient catalytic transformation of organic primary amines to corresponding oximes.
期刊：
JOURNAL OF ORGANIC CHEMISTRY,2025年90(5):2022-2035 ISSN：0022-3263
通讯作者：
Xu, L;Wang, GW
作者机构：
[Huang, Xiao-Man; Xu, Liang; Liang, Si-Si; Zhou, Qian; Wu, Pei-Xi; Shu, Meng-Ping; Xu, L; Zhu, Xiao-Ming] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Coll, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.;[Wang, Guan-Wu] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China.;[Wang, Guan-Wu] Anhui Normal Univ, Key Lab Funct Mol Solids, Anhui Lab Mol Based Mat, Minist Educ, Wuhu 241002, Anhui, Peoples R China.;[Wang, Guan-Wu] Anhui Normal Univ, Sch Chem & Mat Sci, Wuhu 241002, Anhui, Peoples R China.
通讯机构：
[Wang, GW ] U;[Xu, L ] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Coll, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.;Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China.;Anhui Normal Univ, Key Lab Funct Mol Solids, Anhui Lab Mol Based Mat, Minist Educ, Wuhu 241002, Anhui, Peoples R China.
摘要：
The synthesis of perfluoroalkylated fullerenes (PFAFs) holds significant importance due to their enhanced molecular stability, increased lipophilicity, and high electron affinity. Herein, we report a copper-catalyzed multicomponent reaction conducted under aerobic conditions, which enables the production of highly soluble PFAFs with half-wave reduction potentials similar to those of C 60 . Furthermore, the challenges posed by C–F coupling in carbon signal assignment were addressed through fluorine-decoupled carbon spectroscopy, facilitating precise structural characterization of the perfluoroalkyl moieties.
The synthesis of perfluoroalkylated fullerenes (PFAFs) holds significant importance due to their enhanced molecular stability, increased lipophilicity, and high electron affinity. Herein, we report a copper-catalyzed multicomponent reaction conducted under aerobic conditions, which enables the production of highly soluble PFAFs with half-wave reduction potentials similar to those of C 60 . Furthermore, the challenges posed by C–F coupling in carbon signal assignment were addressed through fluorine-decoupled carbon spectroscopy, facilitating precise structural characterization of the perfluoroalkyl moieties.
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作者机构：
[Yongkang Zhou; Ting Xiang; Lifen Xiao; Hua Lai; Wei Li] College of Chemistry and Materials Science, Hengyang Normal University, 165 Huangbai Road, Hengyang, Hunan 421008, PR China;[Ye-Tang Pan] National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China;[Henri Vahabi] Université de Lorraine, CentraleSupélec, LMOPS, Metz F-57000, France;[Geng Huang] College of Chemistry and Materials Science, Hengyang Normal University, 165 Huangbai Road, Hengyang, Hunan 421008, PR China<&wdkj&>National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
通讯机构：
[Geng Huang] C;College of Chemistry and Materials Science, Hengyang Normal University, 165 Huangbai Road, Hengyang, Hunan 421008, PR China<&wdkj&>National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
摘要：
The creation of high-performance flame retardants using a simple method is essential to align with the increasing demand for sustainable and non-toxic flame retardants. Red phosphorus (RP) was encapsulated with magnesium-aluminum-layered double hydroxides (LDHs) through electrostatic assembly to form RP@LDH composites. These composites were incorporated into epoxy resin (EP) at varying concentrations to evaluate their thermal and flammability performance. The EP composite with 7 wt% RP@LDH achieved a limiting oxygen index (LOI) of 37.5 % and a UL-94 V-0 rating. Compared to pure EP, this composite demonstrated a 16.3 % increase in carbon residue and reductions of 41.1 %, 37.9 %, and 40.8 % in peak heat release rate, total heat release, and carbon monoxide emissions, respectively. The enhancements are attributed to a protective barrier formed by LDH and RP decomposition products during combustion, which also suppress flammable by-product formation. Simultaneously enhanced the mechanical properties of EP composite materials effectively. This synergistic interaction provides valuable insights into developing advanced flame-retardant systems for polymer applications.
The creation of high-performance flame retardants using a simple method is essential to align with the increasing demand for sustainable and non-toxic flame retardants. Red phosphorus (RP) was encapsulated with magnesium-aluminum-layered double hydroxides (LDHs) through electrostatic assembly to form RP@LDH composites. These composites were incorporated into epoxy resin (EP) at varying concentrations to evaluate their thermal and flammability performance. The EP composite with 7 wt% RP@LDH achieved a limiting oxygen index (LOI) of 37.5 % and a UL-94 V-0 rating. Compared to pure EP, this composite demonstrated a 16.3 % increase in carbon residue and reductions of 41.1 %, 37.9 %, and 40.8 % in peak heat release rate, total heat release, and carbon monoxide emissions, respectively. The enhancements are attributed to a protective barrier formed by LDH and RP decomposition products during combustion, which also suppress flammable by-product formation. Simultaneously enhanced the mechanical properties of EP composite materials effectively. This synergistic interaction provides valuable insights into developing advanced flame-retardant systems for polymer applications.
摘要：
In this study, Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 ceramics were synthesized by a high-temperature solid-state method, and the feasibility of using it as thermal barrier coating was systematically studied. This study primarily investigated the thermal physical properties, mechanical properties, and calcium-magnesium-alumina-silicate oxides (CMAS) corrosion resistance of the Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 ceramic bulk. The results indicated that the thermal expansion coefficient of Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 ceramics was close to that of 6 similar to 8wt% yttria-stabilized zirconia (YSZ). At 1000 degrees C, the thermal conductivity of Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 (1.43 W/(m<middle dot>K)) was about 43% lower than that of YSZ (2.5 W/(m<middle dot>K)). Furthermore, Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 also exhibited significant advantages in mechanical properties. Its hardness, fracture toughness, and Young's modulus are 10.00 +/- 0.28 GPa, 2.53 +/- 0.06 MPa<middle dot>m(1)/2, and 124.91 +/- 17 GPa, respectively. In addition, Gd-2(Hf-0.Ti-7(0).(3))(2)O-7 exhibited excellent CMAS corrosion resistance, making it a promising candidate for the next generation of thermal barrier coating materials.
