摘要：
Understanding how the electronic state of transition metal atoms can influence molecular adsorption on a substrate is of great importance for many applications. Choosing NH(3) as a model molecule, its adsorption behavior on defected SnS(2) monolayers is investigated. The number of valence electrons n is controlled by decorating the monolayer with different transition metal atoms, ranging from Sc to Zn. Density-Functional Theory based calculations show that the adsorption energy of NH(3) molecules oscillates with n and shows a clear odd-even pattern. There is also a mirror symmetry of the adsorption energies for large and low electron numbers. This unique behavior is mainly governed by the oxidation state of the TM ions. We trace back the observed trends of the adsorption energy to the orbital symmetries and ligand effects which affect the interaction between the 3σ orbitals (NH(3)) and the 3d orbitals of the transition metals. This result unravels the role which the spin state of TM ions plays in different crystal fields for the adsorption behavior of molecules. This new understanding of the role of the electronic structure on molecular adsorption can be useful for the design of high efficiency nanodevices in areas such as sensing and photocatalysis.
摘要：
Six aroylhydrazone di-m-chlorobenzyltin complexes {[X-C(6)H(4)(O)C=N-N=C(Me)COO](MeOH)(m-Cl-C(6)H(4)CH(2))(2)Sn}(2) (X = p-Me- (1), p-MeO- (2), p-t-Bu- (3), p-NO(2)- (4), p-OH- (5) or o-OH- (6)) were synthesized and characterized by HRMS (high-resolution mass spectrometry), NMR (nuclear magnetic resonance spectroscopy), IR (Fourier transform infrared spectroscopy), and TGA (thermogravimetric analysis) techniques. The molecular structure of complexes 1-6 was confirmed by single-crystal X-ray crystallography. The structure of complexes showed a distorted pentagonal bipyramidal configuration around the tin atom center, and the ligands adopted a tridentate chelating mode. Fascinatingly, either one-dimensional infinite chain structures or two-dimensional network structures were observed in the complexes through hydrogen bonds. Complex 2 has the strongest inhibitory effect on MCF7 and HepG2 cell proliferation, its effect was superior to that of the positive control drug cisplatin. The interaction of ct-DNA (calf-thymus DNA) with complex 2 was explored using UV absorption (ultraviolet absorption) and fluorescence spectroscopy. Complex 2 exhibited a moderate affinity for ct-DNA through intercalation modes. The interaction of complex 2 with ct-DNA has also been supported by molecular docking studies.
作者机构：
[Hu, JW; Zhai, Yunran; Cui, Ying; Hu, Jiawen] Hunan Univ, Coll Chem & Chem Engn, Adv Catalyt Engn Res Ctr, Hunan Key Lab Two Dimens Mat,Minist Educ, Changsha 410082, Peoples R China.;[Cui, Ying; Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421001, Peoples R China.;[Fan, Shanji; Liu, Yingjie] Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Dept Breast & Thyroid Surg, Hengyang 421000, Peoples R China.;[Wang, Lijia] Zhejiang Univ, Natl Clin Res Ctr Child Hlth, Natl Childrens Reg Med Ctr, Childrens Hosp,Sch Med, Hangzhou 310052, Zhejiang, Peoples R China.
通讯机构：
[Hu, JW ] H;[Wang, LJ ] Z;Hunan Univ, Coll Chem & Chem Engn, Adv Catalyt Engn Res Ctr, Hunan Key Lab Two Dimens Mat,Minist Educ, Changsha 410082, Peoples R China.;Zhejiang Univ, Natl Clin Res Ctr Child Hlth, Natl Childrens Reg Med Ctr, Childrens Hosp,Sch Med, Hangzhou 310052, Zhejiang, Peoples R China.
摘要：
This study reports a metal-enhanced fluorescence chemodosimeter for highly sensitive detection of Hg2+ ions. Silica-coated Au nanoparticles (Au@SiO2 NPs) with a pinhole-free 4-5 nm shell were synthesized and functionalized with a monolayer of turn-on fluorescent probes. Compared to other organic fluorescent probes suffering from poor biocompatibility and detection limits, this design of a monolayer of turn-on fluorescent probes immobilized on the Au@SiO2 NPs with a pinhole-free 4-5 nm shell avoids fluorescence quenching and allows the fluorescent probe within the field of the inner Au NPs to experience metal-enhanced fluorescence. With this design, the chemodosimeter permits fluorescence emission in the presence of Hg2+ ions, because they trigger the ring-opening reaction of the fluorescent probe immobilized on the Au@SiO2 NPs. Additionally, the fluorescent probe is distanced by the thin SiO2 shell from directly attaching to the metallic Au NPs, which not only avoids fluorescence quenching but allows the fluorescent probe within the long-ranged field of the inner Au NPs to experience metal-enhanced fluorescence. As a result, the detection limit for the chemodosimeter can reach up to 5.0 x 10(-11) M, nearly two orders of magnitude higher than that achieved for the free fluorescent probe. We also demonstrate the acquisition of images of Hg2+ in HTC116 cells and zebrafish using a simple fluorescence confocal imaging technique. The fluorescence response results for HTC116 cells and zebrafish show that the probes can permeate into cells and organisms. Considering the availability of the many organic fluorescent probes that have been designed, the current designed metal-enhanced fluorescence chemodosimeter holds great potential for fluorescence detection of diverse species and fluorescence imaging.
通讯机构：
[Zhao, HH ] H;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421008, Peoples R China.
关键词：
Convex optimization;block compressive sensing;split Bregman iteration;Poisson function
摘要：
To improve reconstruction performance in imagery compressive sensing, the present paper changes solving a block image compressive sensing reconstruction into a convex optimization problem. First, a Total-Variation norm minimization constraints model that includes both L1 and L2 norm functions is established. The split Bregman iterative method solves the model with convex optimization. Then, a robust adaptive image block compressive sensing algorithm is studied based on an analysis of the image features. The image is divided into blocks, and an overlap image block compressive reconstruction method is proposed. Finally, to solve the block effect caused by block compressive sensing reconstruction, a novel image overlap block compressive sensing reconstruction based on the Poisson function is suggested to avoid the block effect in the reconstruction process. The experimental results show that compared with other traditional compressive sensing reconstruction algorithms, the proposed method can generate a better image reconstruction result. According to the PSNR evaluation, when the sampling rate is 0.3, the proposed method is improved by more than 20.98% compared to the conventional techniques, and according to the SSIM evaluation, it has improved by more than 11.92% from the traditional methods. We can also find that the proposed method has better construction effect for traffic sign image recognition compared with ordinary natural image reconstruction. When the sampling rate is only 0.1, the PSNR value reaches 44.28dB, and the SSIM reconstruction accuracy reaches 98.14%. After reconstructing different types and characteristic images, it is supported that the proposed algorithm has good robustness and anti-noise performance.
期刊：
JOURNAL OF ORGANIC CHEMISTRY,2024年89(5):2939-2950 ISSN：0022-3263
通讯作者：
Fu, Yang;Ding, QP
作者机构：
[Tan, Yuxing; Ding, Qiuping; Jiang, Wu-jiu; Fu, Yang; Ding, QP] Jiangxi Normal Univ, Key Lab Green Chem Jiangxi Prov, Key Lab Fluorine & Silicon Energy Mat & Chem, Minist Educ, Nanchang 330022, Jiangxi, Peoples R China.;[Tan, Yuxing; Jiang, Wu-jiu; Ni, Penghui] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Fu, Y; Ding, QP ] J;Jiangxi Normal Univ, Key Lab Green Chem Jiangxi Prov, Key Lab Fluorine & Silicon Energy Mat & Chem, Minist Educ, Nanchang 330022, Jiangxi, Peoples R China.
摘要：
Herein, we developed a highly selective, efficient, and simple method for direct transamidation of thioamides with amines, promoted by commercially available acetophenone under metal-/solvent-free conditions. The reaction tolerated a wide range of functional groups and substrates, including single- or double-thioamides, benzylamines, or alkyl/cycloalkyl-substituted aliphatic amines. The present protocol can be applied to gram-scale in good yields. In addition, the Pt-/Ni-complexes of double-transamidation products were obtained in good to excellent yields. The investigation of photophysical properties indicated that the fluorescence spectra of Pt-complexes showed an emission band centered at 550-750 nm and exhibited red fluorescence when irradiated by a UV lamp (365 nm).
通讯机构：
[Zhao, HH ] H;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.
关键词：
Tracking-by-detection;Multi-object tracking;Occlusion;Global information
摘要：
As a fundamental task in computer vision, multi -object tracking (MOT) has gained increasing attention due to its commercial and academic potential. However, accurately tracking multiple objects is highly challenging. The problems of object occlusion, deformation, and real-time requirements have long been obstacles to be tackled in the field of multi -object tracking. In this paper, we first propose a novel approach to address the problem of tracklet fragmentation caused by occlusion and deformation by establishing a global linking model to obtain global information on trajectories. Then, we reduce camera jitter using camera motion compensation to more accurately locate objects in the moving scene. Next, to address the issue of linear interpolation that ignores a large amount of motion information, we utilize Gaussian process regression for smooth interpolation to fill in missing detections and reduce the noise covariance of the Kalman filter through adaptive computation. We integrate our work together and ultimately propose a simple, real-time, and robust multi -object tracker named TPTrack. Through extensive experiments, our proposed TPTrack achieves HOTA scores of 63.5, 61.7, and 56.8 on the MOT17, MOT20, and DanceTrack datasets, respectively. Notably, it exhibits a significant 19% enhancement over the state-of-the-art approach, specifically on the DanceTrack dataset. Furthermore, TPTrack operates at a speed of 33.7 FPS on a single GPU. The source code is available at https://github.com/godHhh/TPTrack.
摘要：
A well-defined cost function is a key issue for image steganography to minimize the embedding distortion. In recent years, deep learning has been introduced into image steganography to automatically learn embedding costs and improve steganographic security. For most existing generative adversarial network (GAN) based cost learning works, the generator usually adopts an encoder-decoder architecture. However, due to repeated encoding and decoding operations, this architecture is prone to information loss, making the generator difficult to well capture fine-grained image features. In this work, we propose a novel GAN-based image steganography work that improves the cost function by learning better embedding probability maps. Specifically, we design an attention mechanism to be integrated into the U -Net architecture, which enables the generator to concentrate on texture -rich regions of input images. Moreover, an extra input stream, namely the enhanced image, is introduced into the generator, improving the generator's ability to learn structural features from input images. Different skip connections are used for different input streams to facilitate information flow between different layers. Extensive experimental results demonstrate that the proposed approach effectively learns the embedding probability maps and achieves superior security against various steganalysis attacks.
摘要：
Camouflaged instance segmentation (CIS) aims to segment instances that are seamlessly embedded in their surroundings. Existing CIS methods often focus on utilizing global information but neglect local information, resulting in incomplete feature representation and reduced accuracy. To address this, we propose a global-to-local network (GLNet) for CIS, leveraging both global and local information for enhanced feature representation and segmentation. Specifically, GLNet consists of two main components: global capture and local refinement. In global capture, we introduce a novel dual-branch convolutional feed-forward network (Dual-FFN), which aims to more effectively capture camouflaged instances in complex scenes. In local refinement, we design a U-shape feature fusion module (UFFM) and an edge-guide fusion module (EFM). These modules facilitate the fusion of multi-scale features by cascading. As a result, the network gains an enhanced ability to discern the intricate details of camouflaged instances. Experimental results demonstrate that our GLNet outperforms existing methods, with a 49.3% average precision (AP) on the COD10K-Test.
通讯机构：
[Zhang, JD; Li, YW ; Chen, WJ] S;Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou Key Lab Novel Semicond Mat & Devices, Lab Adv Optoelect Mat, Suzhou 215123, Jiangsu, Peoples R China.;Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Jiangsu, Peoples R China.;Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Jiangsu Key Lab Adv Funct Polymer Design & Applica, Suzhou 215123, Jiangsu, Peoples R China.
关键词：
Perovskite/organic tandem solar cell;Defect states;Piperazine ion salt;Energy conversion;Low-dimensional materials;Perovskite solar cells;2D/3D perovskites;Efficiency
摘要：
PZOI, consisting of a piperazine iodide and terminated hydroxyl, was used to post‐treat the defect‐rich wide‐bandgap (WBG) perovskite film surface. This treatment can effectively reduce the shallow and deep‐level defect densities by forming Pb—O coordination and 2D perovskite, respectively. These advances reduce the energy loss of WBG perovskite film surface by 40 meV, and significantly promote the power conversion efficiency of perovskite/organic TSCs to 24.05%. Comprehensive Summary Monolithic perovskite/organic tandem solar cells (TSCs) have gained significant attention due to their easy device integration and the potential to surpass the Shockley–Queisser limit of single‐junction solar cells. However, the surfaces of wide‐bandgap perovskite films are densely populated with defects, leading to severe non‐radiative recombination and energy loss. As a consequence, the power conversion efficiency (PCE) of perovskite/organic TSCs lags behind that of other TSC counterparts. To address these issues, we designed a functional ammonium salt, 4‐(2‐hydroxyethyl)piperazin‐1‐ium iodide (PZOI), comprising a piperazine iodide and a terminated hydroxyl group, which was applied for post‐treating the perovskite surface. Our findings reveal that PZOI reacts with and consumes residual PbX2 (X: I or Br) to form a 2D perovskite component, thereby eliminating Pb0 defects, while the terminated hydroxyl group in PZOI can also passivate uncoordinated Pb2+. Consequently, the shallow/deep‐level defect densities of the 2D/3D perovskite film were significantly reduced, leading to an enhanced PCE of single‐junction 2D/3D wide‐bandgap perovskite solar cells to 18.18% with a reduced energy loss of 40 meV. Importantly, the corresponding perovskite/organic TSCs achieved a remarkable PCE of 24.05% with enhanced operational stability (T90 ~500 h).
通讯机构：
[Vasenko, AS ] H;[Long, R ] B;HSE Univ, Moscow 101000, Russia.;Beijing Normal Univ, Coll Chem, Key Lab Theoret & Computat Photochem, Minist Educ, Beijing 100875, Peoples R China.;Donostia Int Phys Ctr DIPC, Donostia San Sebastian 20018, Euskadi, Spain.
摘要：
The rapid recombination of photogenerated carriers heavily restricts the photocatalytic efficiency. Here, we propose a new strategy to improve catalytic efficiency based on the ferroelectric van der Waals heterostructure (CuBiP(2)Se(6)/C(2)N). Combining density functional theory and the nonadiabatic molecular dynamics (NAMD) method, we have systematically analyzed the ground-state properties and carrier dynamics images in the CuBiP(2)Se(6)/C(2)N heterostructure. Our calculations showed that the ferroelectric polarization of CuBiP(2)Se(6) provides the internal driving force for the photogenerated carriers separation. NAMD results demonstrate that the excited-state carrier transfer and recombination processes in the CuBiP(2)Se(6)/C(2)N are consistent with a type II mechanism. Meanwhile, constructing the ferroelectric heterostructure can effectively prolong the carrier lifetime, from ∼65.98 to ∼124.54 ps. Moreover, the high quantum efficiency and tunable band edge positions mean that the CuBiP(2)Se(6)/C(2)N heterostructure is an excellent potential candidate material for photocatalytic water splitting.
摘要：
Two-dimensional (2D) Janus semiconductor materials have shown significant potential in the fields of electronics and optoelectronics. The problem of interface contact with electrodes is still faced in the preparation of 2D devices based on them. In this work, we study the interfacial properties of the 2D Janus M2OS (M = Ga, In) material in contact with graphene by using ab initio density functional calculations. The results show that an n-type quasi-Ohmic contact (Ohmic contact) is formed regardless of whether the graphene electrode is in contact with the O or S surface of Ga2OS (In2OS). The heterostructures of graphene and M2OS have a very strong Fermi level pinning effect at the interface due to the gap states and the interface dipole. The layer spacing almost does not affect the contact behavior, which is very advantageous for the preparation of devices. The robust Ohmic contact behavior makes M2OS very competitive in building next-generation nanoelectronic devices.
作者机构：
[Xu, Zhuo-Wen; Xia, Yu-Xuan; Li, Wei; Liu, Yang; Li, W] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;[Li, Chang-Hong] Hunan Inst Technol, Dept Chem Engn, Hengyang 421002, Hunan, Peoples R China.
通讯机构：
[Liu, Y ; Li, W] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
摘要：
C75H76N10O23Tb2, triclinic, P - (1) over bar (no. 2), a = 10.4524(13) angstrom, b = 12.9626(16) angstrom, c = 15.2003(18) angstrom, alpha = 108.674(2)degrees, beta = 94.931(2)degrees, gamma = 101.617(2)degrees, V = 1885.8(4) nm(3), Z = 1, R (gt) (F) = 0.0236, wR (ref) (F-2) = 0.0584, T = 296 K.
期刊：
Journal of the European Ceramic Society,2024年44(6):3747-3759 ISSN：0955-2219
通讯作者：
Sun, Junbin;Lu, WH
作者机构：
[Liu, Zhihua; Sun, Junbin; Lu, Weihong; Sun, JB; Ou, Jiani; Bin, Xing; Lu, WH] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Sun, Junbin; Lu, Weihong] Hengyang Normal Univ, Hunan Prov Key Lab Funct Met Organ Cpds, Hengyang 421008, Peoples R China.;[Sun, Junbin; Lu, Weihong] Hengyang Normal Univ, Coll Hunan Prov, Key Lab Organometall New Mat, Hengyang 421008, Peoples R China.;[Sun, Junbin; Lu, Weihong] Hengyang Normal Univ, Hunan Engn Res Ctr Monitoring & Treatment Heavy Me, Hengyang 421008, Peoples R China.
通讯机构：
[Sun, JB; Lu, WH ] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
CeO2;CMAS corrosion
摘要：
Alumina based ceramic materials, such as LaMgAl11O19 (LMA) containing amounts of Al, usually resist the CMAS corrosion through forming a compact layer of the CaAl2Si2O8. In this work, the LMA/CeO2 mixed powders in mole ratios of 5:5 (L5C5), 7:3 (L7C3) and 9:1 (L9C1) were pressed and sintered to prepare the ceramic bulks. The resistance to CMAS corrosion of the LMA/CeO2, the CeO2 and the LMA ceramic bulks were tested and compared at 1250 degrees C and 1350 degrees C for 1 h, 5 h and 10 h. Results showed that the added CeO2 in the LMA can decrease the porosity and improve the resistance to CMAS corrosion. The combined effects of the LMA and CeO2 promoted the formation of the CaAl2Si2O8. The L5C5 and the L9C1 with appropriate composition have good resistance to CMAS corrosion at 1250 degrees C, and the L9C1 can alleviate CMAS infiltration compared with the LMA and other proportional materials at 1350 degrees C.
期刊：
Scripta Materialia,2024年242:115958 ISSN：1359-6462
通讯作者：
Huang, SJ;Wei, XL
作者机构：
[Huang, Shouji] Shaoyang Univ, Dept Phys, Shaoyang 422000, Peoples R China.;[Yang, Liwen] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Peoples R China.;[Wei, Xiaolin] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Xu, Guobao] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China.
通讯机构：
[Huang, SJ ] S;[Wei, XL ] H;Shaoyang Univ, Dept Phys, Shaoyang 422000, Peoples R China.;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
关键词：
MnO quantum dots;Anode;Carbon aggregates;Li ion batteries
摘要：
We develop a facile strategy to construct massive MnO quantum dots of average size 3 nm embedded in quasispherical N-doped carbon aggregates as anodes for Li ion batteries (LIBs). The unique nanostructure supplies an elastic conductive carbon frame to alleviate volume expansion, ensures almost the entire surface of each MnO particle participate in electrochemical reactions, shortens ion diffusion length, and enhances electronic conductivity. Moreover, ex-situ TEM and HRTEM findings prove excellent reversibility and stability. Therefore, nanocomposite anode shows outstanding characteristics, including a high reversible capacity with 1052 mAh g- 1 at 0.3 A g-1 after 160 cycles, excellent rate capability with 407 mAh g-1 at 5 A g -1, and a prolonged cycling lifespan of 677 mAh g-1 at 2.0 A g-1 after 550 cycles with capacity retention of 113 %. In addition, Li full cell also show outstanding electrochemical performances by using LiFePO4 as cathode, and employing a nanocomposite as the anode.
摘要：
Recent research on text -guided image style transfer using CLIP (Contrastive Language -Image Pre -training) models has made good progress. Existing work does not rely on additional generative models, but it cannot guarantee the quality of the generated images, and often suffers from problems such as distortion of content images and uneven stylization of the generated images. To address such problems, this work proposes the TextStyler model, a CLIP -based approach for text -guided style transfer. In the TextStyler model, we propose a style transformation network STNet, which consists of an encoder and a multi -scale decoder. The network can capture the hierarchical features of the content image, and the decoder feature fusion module in the network, designed based on the channel attention mechanism, helps the network to maximize the retention of the detailed information of the content image while realizing texture transfer. In addition, we design a patch -wise perceptual loss, which is able to transfer the stylized texture to each local region of the image and improve the balance of model stylization. The experimental results show that the TextStyler model can achieve a wider range of style transfer than existing methods using stylized images, and the generated artistic images are more in line with human visual perception than state-of-the-art text -guided style transfer methods.
摘要：
Recently, both quartic self-similar pulses (QSSPs) and dissipative pure-quartic-solitons (DPQSs) pulses have been theoretically demonstrated in mode-locked fiber laser with pure positive fourth-order dispersion (FOD). Here, we investigate the existence regions and dynamics of those two soliton pulses by numerically solving the cubic-quintic Ginzburg-Landau equation. We find the positive FOD fiber laser tends to emit QSSPs in the presence of high nonlinear gain, while it is apt to generate DPQS pulses in the case of low nonlinear gain. An unstable pulse region separates the QSSP region from the DPQS region. The characteristics of QSSP and DPQS pulses are dependent on the nonlinear gain and FOD. The QSSP can carry more energy than that of DPQS pulse, because the DPQS pulse with large energy could be unstable due to the excessive pulse pedestal. Our results are not only useful for understanding the dynamics of the DPQS pulse and QSSP in the cubic-quintic Ginzburg-Landau equation with pure FOD, but also provide a guideline for generating high-energy pulses from the positive FOD fiber laser.
通讯机构：
[Zhang, DZ ] H;[Ma, J ] C;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421008, Peoples R China.;Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China.
摘要：
The plasma equilibrium plays a crucial role in nuclear fusion studies, serving as the foundation for various aspects of fusion research, including plasma stability, transport, and current drive. In this paper, a new Grad-Shafranov equation solver is developed for the fixed-boundary plasma equilibria with toroidal flow. This solver utilizes the pressure profile, safety factor profile (not current profile), and any two profiles of the toroidal angular velocity, plasma temperature, and square of the Mach number as inputs. The numerical results obtained by this solver exhibit good agreement with known analytic solution under identical parameters, and the potential applications of the solver are demonstrated through several numerical equilibria with toroidal flow. It is very convenient to apply this code to simulate the tokamak equilibrium with a smooth plasma shape. In addition, the effect of toroidal flow on the plasma equilibria is investigated as a simple application. The results reveal a notable outward shift in the contour profiles of magnetic flux surface, density, pressure, and temperature induced by toroidal flow.
摘要：
Organic deep-red fluorescent materials have a wide range of applications in organic light-emitting diodes (OLEDs), biological imaging, night-vision equipment, and other fields. Here, we designed and synthesized a new deep-red emissive donor-acceptor (D -A) compound TPANZPPICN, whose non-doped OLED achieves stable pure deep-red electroluminescence (EL) at 692 nm with a maximum external quantum efficiency (EQE) of 2.67 % in non-doped OLED and a maximum EQE of 7.96 % at 660 nm in doped OLED. Magneto-electroluminescence (MEL) measurements reveal a negative response in the doped OLED, which is a significant character of reversed intersystem crossing (RISC) on high-lying excited states. Both theoretical calculations and experimental results confirm that the hot-exciton mechanism is responsible for the high efficiency EL of doped OLED, which proves to be a novel approach to realize the efficient deep-red organic fluorescent OLEDs.
作者机构：
[Cai, Jin; Yao, Xintong; Yang, Bo; Luo, Shanshan] Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Chen, Mansheng; Chen, MS] Hengyang Normal Univ, Key Lab Met Organ New Mat Coll Hunan Prov, Sch Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Chen, MS ] H;Hengyang Normal Univ, Key Lab Met Organ New Mat Coll Hunan Prov, Sch Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
摘要：
C16H24CoN4O8, triclinic, P1 (no. 2), alpha = 7.4371(8) & Aring;, b = 7.6451(9) & Aring;, c = 9.9156(12) & Aring;, alpha = 69.830(6)degrees, beta = 71.245(5)degrees, gamma = 79.653(5)degrees, V = 499.60(10) & Aring;(3), Z = 1, R-gt(F) = 0.0247, wR(ref)(F-2) = 0.0630, T = 293(2) K.
