一种梯形结构的二丁基锡4-硝基苯甲酸酯及制备方法与应用
发明/设计人：
庾江喜;邝代治;冯泳兰;张复兴;蒋伍玖;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201310407007.0
申请时间：
2013-9-9
公开号：
CN103450253A
公开时间：
2013-12-18
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号
摘要：
本发明公开的一种梯形结构的二丁基锡4-硝基苯甲酸酯,其特征在于,为如下结构式(1)的配合物,其中Bu代表正丁基。本发明还公开了结构式(1)的配合物的制备方法及在在制备抗肿瘤药物中的应用。
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高分子材料与工程专业产学研结合实践教学体系的构建与实践
作者：
刘梦琴;曾海斌;邝代治;冯泳兰;张复兴;...
期刊：
衡阳师范学院学报 ,2013年34(06):51-55 ISSN：1673-0313
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳,421008;衡阳市成章实验中学,湖南衡阳,421008;[冯泳兰; 邝代治; 刘梦琴; 曾荣英; 唐斯萍; 张复兴; 许志锋] 衡阳师范学院;[曾海斌] 衡阳市成章实验中学
关键词：
高分子材料与工程;产学研结合;实践教学;创新能力
摘要：
分析了衡阳师范学院化学与材料科学系高分子材料与工程专业的实践教学现状及存在的问题,提出了通过构建高分子材料与工程专业产学研结合实践教学体系提高学生创新能力的相应措施.
语种：
中文
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有机化学实验教学中突出学生主体地位的实践
作者：
庾江喜;邝代治;张复兴;王剑秋;许志锋;...
期刊：
衡阳师范学院学报 ,2013年34(03):143-145 ISSN：1673-0313
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳,421008;[庾江喜; 邝代治; 刘梦琴; 王剑秋; 张复兴; 许志锋] 衡阳师范学院
关键词：
有机化学实验教学;主体地位
摘要：
近年来,在调整有机化学实验教学体系、改革实验考核方式的基础上,在实验教学中进行突出学生主体地位的实践探索,取得了良好的教学效果。
语种：
中文
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锌(Ⅱ)配合物Zn(2-PMBBA)_2(Phen)的合成、电化学、磁性及荧光性能研究
作者：
Tang Si-Ping* ;Xu Zhi-Feng;Feng Yong-Lan;Wang Hai-Yang
期刊：
无机化学学报 ,2013年29(12):2683-2687 ISSN：1001-4861
通讯作者：
Tang Si-Ping
作者机构：
[Wang Hai-Yang; Feng Yong-Lan; Xu Zhi-Feng; Tang Si-Ping] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Coll, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Tang Si-Ping] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Hunan Prov Coll, Hengyang 421008, Hunan, Peoples R China.
关键词：
锌(Ⅱ)配合物;2-(对甲基苯甲酰基)苯甲酸;晶体结构;电化学,磁性及荧光性能
摘要：
以2-(对甲基苯甲酰基)苯甲酸(2-PMBBA)和1,10-邻菲啰啉(Phen)为配体合成了一个新的锌(Ⅱ)配合物Zn(2-PMBBA)_2(Phen)。该配合物晶体属正交晶系,空间群Pccn,晶胞参数:a=1.371 6(4) nm,b=1.336 8(4) nm,c=1.928 7(5) nm,V=3.536 4(17) nm~3,D_c=1.360 g·cm~(-3),Z=4,μ(Mo Kα)=0.746 mm~(-1),F(000)=1 496,最终偏离因子R_1=0.035 8,wR_2=0.086 1。在标题配合物中,中心锌(Ⅱ)离子的配位数是4,处于变形的四面体配位环境中,这是不多见的。本工作还测定了标题配合物的电化学、磁性及荧光性能。结果表明:循环伏安过程中,配合物的电子转移是不可逆的,对应的电极反应是Zn(Ⅱ)/Zn(0);在300~7 K,配合物有抗磁性;当激发波长为224 nm时,配合物在450和472 nm处有强的荧光发射峰。
语种：
中文
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Electrochemically reduced graphene oxide modified acetylene black paste electrode for the sensitive determination of bisphenol A
作者：
Deng, Peihong* ;Xu, Zhifeng;Kuang, Yunfei
期刊：
Journal of Electroanalytical Chemistry ,2013年707:7-14 ISSN：1572-6657
通讯作者：
Deng, Peihong
作者机构：
[Deng, Peihong; Xu, Zhifeng; Kuang, Yunfei] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Deng, Peihong] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Acetylene black paste electrode;Bisphenol A;Direct electrochemical reduction;Graphene oxide;Voltammetric sensor
摘要：
This paper has presented a novel strategy to carry out direct and sensitive determination of bisphenol A (BPA) based on the graphene modified acetylene black paste electrode (GR/ABPE). This modified electrode was obtained by one-step potentiostatic reduction of exfoliated graphene oxide sheets on the surface of ABPE. Due to the unique structure and extraordinary properties of GR and AB, the fabricated sensor displayed greatly improved voltammetric response to BPA compared with the conventional carbon paste electrode. Under the optimized conditions, the linear range for the detection of BPA was from 0.8 nM to 10.0 nM, 10.0 nM to 8.0 μM and 8.0 μM to 0.1 mM, with a detection limit (S/N = 3) of 0.6 nM. Additionally, this newly-developed method possesses some obvious advantages including extreme simplicity, rapid response and low cost. The practical analytical performance of the GR/ABPE was examined by evaluating the detection of BPA in plastic products with satisfied recovery. ©2013 Elsevier B.V. All rights reserved.
语种：
英文
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Sensitive determination of bisphenol A in plastic products by derivative voltammetry using an acetylene black paste electrode coated with salicylaldehyde-modified chitosan
作者：
Deng, Peihong* ;Xu, Zhifeng;Feng, Yonglan
期刊：
International Journal of Environmental Analytical Chemistry ,2013年93(11):1116-1131 ISSN：0306-7319
通讯作者：
Deng, Peihong
作者机构：
[Deng, Peihong; Xu, Zhifeng; Feng, Yonglan] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Deng, Peihong] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
bisphenol A;salicylaldehyde-modified chitosan;acetylene black;second-order derivative linear sweep voltammetry;determination
摘要：
A sensitive and reliable electrochemical method was developed for determination of bisphenol A (BPA) in plastic products using an acetylene black paste electrode coated with salicylaldehyde-modified chitosan (denoted as S-CHIT/ABPE). In the second-order derivative linear sweep voltammetry technique, BPA yielded a very sensitive and well-defined oxidation peak at 842 m V in 0.2 mol L<sup>-1</sup> HCl solution. Owing to its unique structure and extraordinary properties, S-CHIT/ ABPE showed higher accumulation efficiency toward BPA compared with bare ABPE, and significantly enhanced the oxidation peak current of BPA. Under the optimum conditions, the oxidation peak current was proportional to the concentration of BPA over the range of 4.0 ×10<sup>-8</sup> mol L<sup>-1</sup>~1.0 ×10<sup>-5</sup> mol L<sup>-1</sup>. The detection limit (S/N=3) was 2.0 ×10<sup>-8</sup> mol L<sup>-1</sup>. The fabricated S-CHIT/ABPE not only exhibited strong adsorption capacity toward BPA, but also provided remarkable stable and quantitatively reproducible analytical performance. Additionally, this newly-developed method possesses some obvious advantages including high sensitivity, extreme simplicity, rapid response and low cost. ©2013 Taylor &Francis.
语种：
英文
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Green synthesis of silver nanoparticles-graphene oxide nanocomposite and its application in electrochemical sensing of tryptophan
作者：
Li, Junhua* ;Kuang, Daizhi;Feng, Yonglan;Zhang, Fuxing;Xu, Zhifeng;...
期刊：
Biosensors and Bioelectronics ,2013年42(1):198-206 ISSN：0956-5663
通讯作者：
Li, Junhua
作者机构：
[Liu, Mengqin; Xu, Zhifeng; Li, Junhua; Zhang, Fuxing; Feng, Yonglan; Kuang, Daizhi; Wang, Deping] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;[Liu, Mengqin; Xu, Zhifeng; Li, Junhua; Zhang, Fuxing; Feng, Yonglan; Kuang, Daizhi; Wang, Deping] Hengyang Normal Univ, Hunan Prov Coll, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.;[Li, Junhua] Hengyang Normal Univ, Dept Chem & Mat Sci, 165 Huangbai Rd, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li, Junhua] H;Hengyang Normal Univ, Dept Chem & Mat Sci, 165 Huangbai Rd, Hengyang 421008, Hunan, Peoples R China.
关键词：
Electrochemical tryptophan detection;Graphene oxide;Silver nanoparticles;Tryptophan sensor
摘要：
A new kind of nanocomposite based on silver nanoparticles (AgNPs)/graphene oxide (GO) was conveniently achieved through a green and low-cost synthesis approach using glucose as a reducing and stabilizing agent, and the synthetic procedure can be easily used for the construction of a disposable electrochemical sensor on glassy carbon electrode (GCE). The nanocomposite was detailedly characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR) and electrochemical impedance spectroscopy (EIS). The experimental results demonstrated that the nanocomposite possessed the specific features of both silver nanoparticles and graphene, and the intrinsic high specific area and the fast electron transfer rate ascribed to the nanohybrid structure could improve its electrocatalytic performance greatly. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were employed to evaluate the electrochemical properties of AgNPs/GO/GCE towards tryptophan, and the AgNPs/GO film exhibited a distinctly higher activity for the electro-oxidation of tryptophan than GO film with tenfold enhancement of peak current. The oxidation mechanism and the kinetic parameters were investigated, and analysis operation conditions were optimized. Under the selected experimental conditions, the oxidation peak currents were proportional to tryptophan concentrations over the range of 0.01. μM to 50.0. μM and 50.0. μM to 800.0. μM, respectively. The detection limit was 2.0. nM (S/. N=3). Moreover, the proposed method is free of interference from tyrosine and other coexisting species. The resulting sensor displays excellent repeatability and long-term stability; finally it was successfully applied to detect tryptophan in real samples with good recoveries, ranging from 99.0% to 103.0%. © 2012 Elsevier B.V.
语种：
英文
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三羰基茂卤钼复合物的结构及Cp…Mo作用的研究
作者：
邝代治;冯泳兰;张复兴;许志锋;庾江喜;...
期刊：
衡阳师范学院学报 ,2013年34(03):40-44 ISSN：1673-0313
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳 421008;功能金属有机材料湖南省普通高校重点实验室,湖南衡阳 421008;[庾江喜; 冯泳兰; 邝代治; 蒋伍玖; 张复兴; 曾兰玲; 许志锋] 衡阳师范学院
关键词：
三羰基茂环卤钼复合物;Mo…Cp作用;电子结构;量子化学
摘要：
利用Gaussian 03W程序,在LANL2DZ基组,对三羰基茂卤钼复合物进行理论研究,进行了全结构优化复合物体系的构型,振动频率分析结果表明复合物体系的结构稳定,在此基础上进行单点计算,结果表明,钼原子位于环戊二烯环上形成半夹心结构.复合物的键角、键长、Wiberg键级、原子电荷和体系能及前沿分子轨道组成分析表明,钼原子与环戊二烯之间通过p-7和d-π作用形成“氢键”,环戊二烯碳上的p电子向钼原子的d轨道转移,形成电荷转移复合物.
语种：
中文
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Electrochemical tyrosine sensor based on a glassy carbon electrode modified with a nanohybrid made from graphene oxide and multiwalled carbon nanotubes
作者：
Li, Junhua* ;Kuang, Daizhi;Feng, Yonglan;Zhang, Fuxing;Xu, Zhifeng;...
期刊：
Microchimica Acta ,2013年180(1-2):49-58 ISSN：0026-3672
通讯作者：
Li, Junhua
作者机构：
[Liu, Mengqin; Xu, Zhifeng; Li, Junhua; Zhang, Fuxing; Feng, Yonglan; Kuang, Daizhi; Wang, Deping] Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hunan Prov Coll, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li, Junhua] H;Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hunan Prov Coll, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
关键词：
Electrochemical sensor;Graphene oxide;Carbon nanotube;L-tyrosine
摘要：
We report on a glassy carbon electrode that was modified with a composite made from graphene oxide (GO) and multiwalled carbon nanotubes (MWCNT) that enables highly sensitive determination of L-tyrosine. The sensor was characterized by transmission electron microscopy and electrochemical impedance spectroscopy, and its electrochemical properties by cyclic voltammetry, chronocoulometry and differential pulse voltammetry. The GO/MWCNT hybrid exhibits strong catalytic activity toward the oxidation of L-tyrosine, with a well defined oxidation peak at 761 mV. The respective current serves as the analytical information and is proportional to the L-tyrosine concentration in two ranges of different slope (0.05 to 1.0 μM and 1.0 to 650.0 μM), with limits of detection and quantification as low as 4.4 nM and 14.7 nM, respectively. The method was successfully applied to the analysis of L-tyrosine in human body fluids. The excellent reproducibility, stability, sensitivity and selectivity are believed to be due to the combination of the electrocatalytic properties of both GO and MWCNT. They are making this hybrid electrode a potentially useful electrochemical sensing platform for bioanalysis. Figure A new L-tyrosine electrochemical sensor was fabricated based on graphene oxide and multiwalled carbon nanotube. The prepared sensor exhibits excellent electro-catalysis to the oxidation of L-tyrosine, and can improve determination sensitivity and decrease detection limit. This sensor was successfully applied to detect L-tyrosine in human fluids with satisfactory results.
语种：
英文
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Acetylene black paste electrode modified with a molecularly imprinted chitosan film for the detection of bisphenol A
作者：
Deng, Peihong* ;Xu, Zhifeng;Li, Junhua;Kuang, Yunfei
期刊：
Microchimica Acta ,2013年180(9-10):861-869 ISSN：0026-3672
通讯作者：
Deng, Peihong
作者机构：
[Deng, Peihong; Xu, Zhifeng; Li, Junhua; Kuang, Yunfei] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Deng, Peihong] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Molecular imprinting;Bisphenol A;Chitosan;Acetylene black;Voltammetric sensor
摘要：
We report on a voltammetric sensor for bisphenol A (BPA) that is based on an acetylene-black paste electrode modified with a chitosan film molecularly imprinted for BPA. The sensor responds linearly to BPA in the 80 nM to 10 μM concentration range, and the detection limit is 60 nM (at an S/N of 3). The use of a molecular imprint provides an efficient way for eliminating interferences from potentially interfering substances. The high sensitivity, selectivity and stability of the sensor demonstrate its practical application for the determination of BPA in plastic samples. [Figure not available: see fulltext.] © 2013 Springer-Verlag Wien.
语种：
英文
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DNA binding and oxidative cleavage studies of supramolecular copper(II) complex based on β-cyclodextrin
作者：
Tang, Si-Ping* ;Feng, Yong-Lan;Xu, Zhi-Feng;Wang, De-Ping
期刊：
Asian Journal of Chemistry ,2013年25(13):7397-7400 ISSN：0970-7077
通讯作者：
Tang, Si-Ping
作者机构：
[Xu, Zhi-Feng; Wang, De-Ping; Tang, Si-Ping; Feng, Yong-Lan] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Tang, Si-Ping] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.
关键词：
Copper(II) complex;DNA binding;Inclusion complex;Nuclease activity
摘要：
A copper(II) complex (CuL, 1) with aminothioether ligand and its new inclusion complex with β-cyclodextrin (CuL/β-CD, 2) have been prepared successfully. The binding modes of both complexes with calf thymus DNA were investigated by UV-visible and circular dichroism spectroscopies. Results show that both complexes mainly adopt electrostatic attraction binding mode with DNA and binding constants are (2.02 ± 0.02) × 103 and (1.79 ± 0.05) × 103 M-1, respectively. Both complexes are able to cleave pBR322 plasmid DNA efficiently in the presence of ascorbic acid and the activity of 2 is higher than that of 1. The DNA cleavages by 1 and 2 were inhibited strongly in the presence of DMSO and tert-butyl alcohol, which suggests that hydroxyl radicals are reactive oxygen species for the cleavage.
语种：
英文
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一种梯形结构的二丁基锡4-二甲氨基苯甲酸酯及制备方法与应用
发明/设计人：
庾江喜;冯泳兰;邝代治;张复兴;蒋伍玖;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201310239793.8
申请时间：
2013-6-17
公开号：
CN103304593A
公开时间：
2013-09-18
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号
摘要：
本发明公开的一种梯形结构的二丁基锡4-二甲氨基苯甲酸酯，其为具有如下结构式（1）化合物，其中：R表示正丁基。本发明还公开了该梯形结构的二丁基锡4-二甲氨基苯甲酸酯的制备方法以及在医药中的应用。本发明的一种梯形结构的二丁基锡4-二甲氨基苯甲酸酯具有较好的抗癌活性，可以其为原料制备抗肝癌、抗鼻咽癌、抗乳腺癌、抗肺癌、抗结肠癌药物。与目前普遍使用的铂类抗癌药物相比，本发明的一种梯形结构的二丁基锡4-二甲氨基苯甲酸酯具有抗癌活性高、成本低、制备方法简单等特点，为开发抗癌药物提供了新途径。
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一种含锡氧杂环结构的二丁基锡α-萘乙酸酯及制备方法与应用
发明/设计人：
冯泳兰;邝代治;蒋伍玖;张复兴;庾江喜;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201310406440.2
申请时间：
2013-9-9
公开号：
CN103450252A
公开时间：
2013-12-18
摘要：
本发明公开的一种含锡氧杂环结构的二丁基锡α-萘乙酸酯，为如下结构式（1）的配合物，其中R代表正丁基。本发明还公开了该含锡氧杂环结构的二丁基锡α-萘乙酸酯的制备方法以及在制备抗肿瘤药物中的应用。
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A graphene oxide-based electrochemical sensor for sensitive determination of 4-nitrophenol
作者：
Li, Junhua* ;Kuang, Daizhi;Feng, Yonglan;Zhang, Fuxing;Xu, Zhifeng;...
期刊：
Journal of Hazardous Materials ,2012年201-202:250-259 ISSN：0304-3894
通讯作者：
Li, Junhua
作者机构：
[Liu, Mengqin; Xu, Zhifeng; Li, Junhua; Zhang, Fuxing; Feng, Yonglan; Kuang, Daizhi] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;[Liu, Mengqin; Xu, Zhifeng; Li, Junhua; Zhang, Fuxing; Feng, Yonglan; Kuang, Daizhi] Hengyang Normal Univ, Hunan Prov College, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li, Junhua] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
关键词：
4-Nitrophenol;Electrochemical sensor;Graphene oxide;Sensitive detection
摘要：
A graphene oxide (GO) film coated glassy carbon electrode (GCE) was fabricated for sensitive determination of 4-nitrophenol (4-NP). The GO-based sensor was characterized by scanning electron microscope, atomic force microscopy and electrochemical impedance spectroscopy. The electrochemical behaviors of 4-NP at the GO-film coated GCE were investigated in detail. In 0.1 M acetate buffer with a pH of 4.8, 4-NP yields a very sensitive and well-defined reduction peak at the GO-modified GCE. It is found that the GO film exhibits obvious electrocatalytic activity toward the reduction of 4-NP since it not only increases the reduction peak current but also lowers the reduction overpotential. Based on this, an electrochemical method was proposed for the direct determination of 4-NP. Various kinetic parameters such as transfer electron number, transfer proton number and standard heterogeneous rate constant were calculated, and various experimental parameters were also optimized. Under the optimal conditions, the reduction peak current varies linearly with the concentration of 4-NP ranging from 0.1 to 120 mu M, and the detection limit is 0.02 mu M at the signal noise ratio of 3. Moreover, the fabricated sensor presented high selectivity and long-term stability. This electrochemical sensor was further applied to determine 4-NP in real water samples, and it showed great promise for simple, sensitive, and quantitative detection of 4-NP. (C) 2011 Elsevier B.V. All rights reserved.
语种：
英文
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三环已基锡2-氨基-6-氯苯甲酸酯配合物的合成、结构及量子化学研究
作者：
Zhang Fu-Xing* ;Wang Jian-Qiu;Kuang Dai-Zhi;Feng Yong-Lan;Chen Zhi-Ming;...
期刊：
无机化学学报 ,2012年28(9):1890-1894 ISSN：1001-4861
通讯作者：
Zhang Fu-Xing
作者机构：
[Zhang Fu-Xing] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;Hengyang Normal Univ, Coll Hunan Prov, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Zhang Fu-Xing] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
关键词：
三环己基锡2-氨基-6-氯苯甲酸酯;合成;晶体结构;从头计算;循环伏安
摘要：
三环己基氢氧化锡与2-氨基-6-氯苯甲酸按物质的量比1∶1在苯溶剂中反应合成了三环己基锡2-氨基-6-氯苯甲酸酯。经X-射线衍射方法测定了其晶体结构,配合物属单斜晶系,空间群为P2_1/c,晶体学参数a=0.952 00(4)nm,b=0.918 55(3)nm,c=2.909 12(12)nm,β=93.187(2)°,V=2.539 97(17)nm~3,Z=4,D_c=1.409 g.cm~(-3),μ(Mo Kα)=11.31 cm~(-1),F(000)=1 112,R_1=0.038 2,wR_2=0.098 6。中心锡与环己基碳原子和氧原子构成畸型四面体。对其结构进行量子化学从头计算,探讨了配合物的稳定性、分子轨道能量以及一些前沿分子轨道的组成特征。通过循环伏安法研究了其电化学性质。
语种：
中文
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二正丁基锡二(邻氯苯甲酸)酯配合物{[n-Bu_2Sn(O_2CC_6H_4Cl)]_2O}_2的微波固相合成、结构及体外抗癌活性
作者：
张复兴;王剑秋;邝代治;冯泳兰;许志锋;...
期刊：
应用化学 ,2012年29(5):520-526 ISSN：1000-0518
作者机构：
衡阳师范学院化学与材料科学系,功能金属有机材料湖南省普通高等学校重点实验室 衡阳,421008;[庾江喜; 冯泳兰; 邝代治; 王剑秋; 张复兴; 许志锋] 功能金属有机材料湖南省普通高等学校
关键词：
微波固相合成;二正丁基锡邻氯苯甲酸酯;晶体结构;从头计算
摘要：
二正丁基氧化锡和邻氯苯甲酸按物质的量比1∶2,通过微波固相合成法合成了二正丁基锡邻氯苯甲酸酯配合物{[n-Bu2Sn（O2CC6H4Cl）]2O}2。经X射线衍射方法测定了其晶体结构,配合物属三斜晶系,空间群为P 1,晶体学参数a=1.17653（4）nm,b=1.20672（4）nm,c=2.74090（9）nm,α=80.493（2）°,β=83.995（2）°,γ=64.260（2）°,V=3.4547（2）nm3,Z=2,Dc=1.525 g/cm3,μ（MoKα）=16.34 cm-1,F（000）=1592,R1=0.0414,wR2=0.1349。晶体中每一个结构单元包含了2个键参数完全不同的以Sn2O2构成的平面四元环为中心环的二聚体结构分子,锡原子均为五配位的畸变三角双锥构型。对其结构进行量子化学从头计算,探讨了配合物的稳定性、分子轨道能量以及部分前沿分子轨道的组成特征。
语种：
中文
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Molecularly imprinted polymer based on multiwalled carbon nanotubes for ribavirin recognition
作者：
Xu, Li* ;Xu, Zhi-feng
期刊：
Journal of Polymer Research ,2012年19(8):1-6 ISSN：1022-9760
通讯作者：
Xu, Li
作者机构：
[Xu, Li] S China Agr Univ, Coll Sci, Inst Biomat, Guangzhou 510642, Guangdong, Peoples R China.;[Xu, Zhi-feng] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Xu, Li] S;S China Agr Univ, Coll Sci, Inst Biomat, Guangzhou 510642, Guangdong, Peoples R China.
关键词：
Molecular imprinting technology;Multiwalled carbon nanotubes;Ribavirin;Molecule recognition
摘要：
Molecularly imprinted polymers on the surface of multiwalled carbon nanotubes (MWNTs) have been developed for selective recognition for Ribavirin. The composites (MWNTs/MIPs) were prepared by using Ribavirin as the template molecule, acrylamide (AAM) as the functional monomer, N, N- methylenebisacrylamide (NNMBA) as the cross-linker. MWNTs/MIPs obtained were characterized by fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The properties such as adsorption dynamics, special binding, and the selective recognition ability were evaluated. The adsorption equilibrium was arrived in about 4 h which indicated that the adsorption kinetic was comparatively fast. The results of binding and selectivity experiments showed that the MWNTs/MIPs could bind the template molecule selectively in aqueous media. ©Springer Science+Business Media B.V. 2012.
语种：
英文
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A novel electrochemical method for sensitive detection of melamine in infant formula and milk using ascorbic acid as recognition element
作者：
Li, Junhua* ;Kuang, Daizhi;Feng, Yonglan;Zhang, Fuzing;Xu, Zhifeng;...
期刊：
Bulletin of the Korean Chemical Society ,2012年33(8):2499-2507 ISSN：1229-5949
通讯作者：
Li, Junhua
作者机构：
[Liu, Mengqin; Zhang, Fuzing; Xu, Zhifeng; Li, Junhua; Feng, Yonglan; Kuang, Daizhi] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li, Junhua] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
关键词：
Li, Junhua;Kuang, Daizhi;Feng, Yonglan;Zhang, Fuxing;Xu, Zhifeng;Liu, Mengqin;Electrochemical detection;Melamine;Ascorbic acid;Recognition element
摘要：
A novel and convenient electrochemical method has been developed for sensitive determination of melamine (MEL) using ascorbic acid (AA) as the recognition element. The working electrode employed in this method was modified with the nanocomposite of hydroxyapatite/carbon nanotubes to enhance the current signal of recognition element. The interaction between MEL and AA was investigated by fourier transform infrared spectroscopy and cyclic voltammetry, and the experimental results indicated that hydrogen bonding was formed between MEL and AA. Because of the existing hydrogen bonding and electrostatic interaction, the anodic peak current of AA was decreased obviously while the non-electroactive MEL added in. It illustrated that the MEL acted as an inhibitor to the oxidation of AA and the decreasing signals can be used to detect MEL. Under the optimal conditions, the decrease in anodic peak current of AA was proportional to the MEL concentrations ranging from 10 to 350 nM, with a detection limit of 1.5 nM. Finally this newly-proposed method was successfully employed to detect MEL in infant formula and milk, and good recovery was achieved.
语种：
英文
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Highly sensitive and simultaneous determination of ascorbic acid and rutin at an acetylene black paste electrode coated with cetyltrimethyl ammonium bromide film
作者：
Deng, Peihong* ;Xu, Zhifeng;Peng, Yonglan
期刊：
Journal of Electroanalytical Chemistry ,2012年683:47-54 ISSN：1572-6657
通讯作者：
Deng, Peihong
作者机构：
[Deng, Peihong; Xu, Zhifeng; Peng, Yonglan] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Deng, Peihong] H;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
关键词：
Ascorbic acid;Rutin;Cetyltrimethyl ammonium bromide;Simultaneous detection;Voltammetry
摘要：
A simple and highly sensitive electrochemical method for the simultaneous and quantitative detection of ascorbic acid (AA) and rutin was developed, based on an acetylene black paste electrode coated with cetyltrimethyl ammonium bromide film (denoted as CTAB/ABPE). In 0.1 mol L<sup>-1</sup> HCl aqueous solution, the prepared modified electrode showed higher accumulation efficiency toward AA and rutin compared with bare ABPE, and significantly enhanced the peak currents of AA and rutin. The difference of the anodic peak potentials between AA and rutin was about 350 mV, which is large enough to determine AA and rutin individually and simultaneously. The electrochemical behaviors of AA and rutin were carefully investigated with the electrochemical parameters calculated. Under optimized conditions, the linear calibration ranges were 2.0 ×10<sup>-6</sup> M to 1.0 ×10<sup>-3</sup> M for AA and 6.0 ×10<sup>-9</sup> M to 1.0 ×10<sup>-5</sup> M for rutin, and the detection limits (S/N = 3) were 1.0 ×10<sup>-6</sup> M and 4.0 ×10 <sup>-9</sup> M, respectively. This modified electrode was applied to direct simultaneous determination of AA and rutin in the selected pharmaceutical samples without previous chemical or physical separations. Moreover, the CTAB/ABPE offers some advantages including low cost, facility of construction, good reproducibility and high stability. ©2012 Elsevier B.V. All rights reserved.
语种：
英文
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NICS判据在六元杂环化合物芳香性教学中的应用
作者：
付伟伟;许志锋;王剑秋;李薇
期刊：
高等继续教育学报 ,2012年25(6):28-30+23 ISSN：2095-5987
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳,421008;[王剑秋; 李薇; 许志锋; 付伟伟] 衡阳师范学院
关键词：
芳香性;量子化学;有机化学教学;六元杂环化合物
摘要：
运用NICS判据对六元杂环化合物的芳香性进行了分析,并对引入到有机化学教学中进行了探讨.
语种：
中文
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