Studies on the synthesis and thermochromic properties of crystal violet lactone and its reversible thermochromic complexes
作者：
Zhu, CF* ;Wu, AB
期刊：
Thermochimica Acta ,2005年425(1-2):7-12 ISSN：0040-6031
通讯作者：
Zhu, CF
作者机构：
[Zhu, CF; Wu, AB] Cent China Normal Univ, Dept Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Zhu, CF] C;Cent China Normal Univ, Dept Chem, Wuhan 430079, Peoples R China.
关键词：
Crystal violet lactone;Complexes;Thermochromism;Energy of activity
摘要：
In this article, a crucial compound, crystal violet lactone (CVL), was prepared by the reaction of N,N-dimethylaniline, p-dimethylanimobenzaldehyde and m-dimethylanimobenzoic acid. Taking alcohols or carboxylic acids as solvents, 15 novel reversible thermochromic complexes were prepared by means of chelation reaction between electron donor CVL and electron acceptor such as various phenols, aromatic amines, carboxylic acids, and Lewis acids, respectively. The structure of CVL is characterized by <sup>1</sup>H NMR and MS. The reversible thermochromic behavior of these compounds are studied by DSC/TG, IR, and Raman spectrum. Results indicate that mechanism of these reversible thermochromic complexes is the lactone ring tautomerism when the temperature is low or high. Thermochromic color degree of these complexes is dependent on the acidity of electron acceptor and thermochromic temperature is dependent on the properties of solvent compounds. The properties of electron acceptor and solvent compounds also determined the thermochromic process of the complexes, which followed the first-order kinetic equation, and the values of energy of activity (E <inf>a</inf>) of thermochromic process are correlated with the components of the complexes nearly. The stronger the acidity of phenols is, and the deeper the thermochromic color degree is, the higher the value of E<inf>a</inf> is, when electron acceptors are phenols. ©2003 Elsevier B.V. All rights reserved.
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英文
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Synthesis of (R)-2,3-epoxypropyl(1→3)-β-d-pentaglucoside
作者：
Huang, GL* ;Mei, XY;Liu, MX
期刊：
Carbohydrate Research ,2005年340(4):603-608 ISSN：0008-6215
通讯作者：
Huang, GL
作者机构：
Huazhong Univ Sci & Technol, Sch Life Sci & Technol, Wuhan 430074, Peoples R China.;Cent China Normal Univ, Sch Chem, Wuhan 430079, Peoples R China.;[Huang, GL] Huazhong Univ Sci & Technol, Sch Life Sci & Technol, E Campus,1037 Luoyu Rd, Wuhan 430074, Peoples R China.
通讯机构：
[Huang, GL] H;Huazhong Univ Sci & Technol, Sch Life Sci & Technol, E Campus,1037 Luoyu Rd, Wuhan 430074, Peoples R China.
关键词：
(R)-2,3-epoxypropyl;(1 -> 3)-beta-D-pentaglucoside;synthesis
摘要：
The title pentasaccharide was synthesized via a 2 + 3 strategy. The disaccharide donor, 3-O-acetyl-2-O-benzoyl-4,6-O-benzylidene-β-d- glucopyranosyl-(1→3)-2-O-benzoyl-4,6-O-benzylidene-α-d- glucopyranosyl trichloroacetimidate (8), was obtained by selective coupling of allyl 2-O-benzoyl-4,6-O-benzylidene-α-d-glucopyranoside with 3-O-acetyl-2-O-benzoyl-4,6-O-benzylidene-α-d-glucopyranosyl trichloroacetimidate (4), followed by deallylation, and trichloroacetimidation. Meanwhile, the trisaccharide acceptor, allyl 2-O-benzoyl-4,6-O-benzylidene- β-d-glucopyranosyl-(1→3)-2-O-benzoyl-4,6-O-benzylidene-β-d- glucopyranosyl-(1→3)-2-O-benzoyl-4,6-O-benzylidene-β-d- glucopyranoside (12), was prepared by coupling of allyl 2-O-benzoyl-4,6-O- benzylidene-β-d-glucopyranosyl-(1→3)-2-O-benzoyl-4, 6-O-benzylidene-β-d-glucopyranoside with 4, followed by deacetylation. Condensation of 8 with 12, followed by epoxidation, and deprotection, gave the target pentaoside. © 2005 Elsevier Ltd. All rights reserved.
语种：
英文
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含硫(氧)肟醚化合物杀虫活性三维定量构效关系研究
作者：
Liu, AP;Lu, AJ;Huang, MZ;Chen, C;Liu, XP;...
期刊：
高等学校化学学报 ,2005年26(3):464-466 ISSN：0251-0790
通讯作者：
Yao, JR
作者机构：
[Yao, JR] Hunan Branch Natl Pesticide R&D S Ctr, Hunan Res Inst Chem Ind, Changsha 410007, Peoples R China.;Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China.;Ctr China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.;Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100094, Peoples R China.
通讯机构：
[Yao, JR] H;Hunan Branch Natl Pesticide R&D S Ctr, Hunan Res Inst Chem Ind, Changsha 410007, Peoples R China.
关键词：
含硫(氧)肟醚化合物;三维定量构效关系(3D-QSAR);比较分子力场分析(CoMFA)
摘要：
打破文献[1～3]中芳基烷基肟醚化合物的结构框架,将杂原子硫(氧)引人到其烷基中,设计并合成一系列全新结构的含硫(氧)肟醚化合物[4].……
语种：
中文
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脂氧合酶模型化合物[Fe（CTB）Cl]Cl·3CH3CH2OH·H2O的合成、晶体结构与氧化活性
作者：
Zhao, XZ;Meng, XG;Liao, ZR*
期刊：
高等学校化学学报 ,2005年26(7):1194-1197 ISSN：0251-0790
通讯作者：
Liao, ZR
作者机构：
[Meng, XG; Liao, ZR; Zhao, XZ] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Liao, ZR] C;Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
关键词：
脂氧合酶;晶体结构;氧化活性
摘要：
合成了含Fe2+的脂氧合酶模型化合物[Fe(CTB)Cl]Cl·3CH3CH2OH·H2O(CTB为N,N,N′,N′-四(2′-苯并咪唑甲基)邻二胺反式-环己烷). 该配合物属单斜晶系, P2-1/n空间群. 晶胞参数a=1.129 38(7) nm, b=1.490 04(9) nm, c=2.693 46(17) nm, β=91.953 0(10)°, V=4.530 0(5) nm3, Z=4; R=0.060 2, wR=0.162 9. 中心离子Fe2+只与六齿配体CTB的3个苯并咪唑的3-位氮和两个烷胺氮配位, 氯离子占据着第六配位位点, 整个配合物呈变形八面体构型. 该化合物可催化亚油酸氧化断链成丙二醛(酸)、壬烯醛和壬醛酸等低分子醛和ω-氧酸.
语种：
中文
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Facile synthesis of 2-alkylthio-3-amino-4 H-imidazol-4-ones and 2H-lmidazo[2,1-b]-1,3,4-thiadiazin-6(7 H)-ones via N-vinylic iminophosphorane
作者：
Ding, MW* ;Fu, BQ;Yuan, JZ
期刊：
Heteroatom Chemistry ,2005年16(1):76-80 ISSN：1042-7163
通讯作者：
Ding, MW
作者机构：
[Yuan, JZ; Fu, BQ; Ding, MW] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Ding, MW] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
2‐Alkylthio‐3‐amino‐4H‐imidazol‐4‐ ones 5 were synthesized by S‐alkylation of 2‐thioxo‐3‐amino‐4‐imidazolidinones 4, which were obtained via cyclization of isothiocyanates 2 with hydrazine hydrate. 5l–n reacted with Ph3P, C2Cl6, and NEt3 to give 2H‐imidazo[2,1‐b]‐1,3,4‐thiadiazin‐ 6(7H)‐ones 7a–c in good yields. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:76–80, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20069
语种：
英文
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The Design and Operation of a New Clapboard-Type Internal Circulating Fluidized-Bed Gasifier
作者：
Wu, Zhengshun* ;Zhu, Chuanfang;Ma, Long-long;Wu, Chuangzhi
作者机构：
[Zhu, Chuanfang; Wu, Zhengshun; Wu, Chuangzhi; Ma, Long-long] Huazhong Normal Univ, Coll Chem, Wuhan, Peoples R China.
会议名称：
18th International Conference on Fluidized Bed Combustion
会议时间：
MAY 22-25, 2005
会议地点：
Toronto, CANADA
会议主办单位：
Huazhong Normal Univ, Coll Chem, Wuhan, Peoples R China.
关键词：
biomass gasification;clapboard;type internal circulating Fluidized-Bed gasifier;design and operation
摘要：
The design and operation of a new clapboard-type Internal Circulating Fluidized-Bed gasifier is introduced in this paper. By setting clapboard in the middle of gasifier, bed layer in gasifier is divided into two regions that have different fluidization velocity, the incompletely reacted fuel or carbon in the high velocity region flows to the low velocity region companying with bed medium, and gasification reaction takes place in this region;still incompletely reacted fuel or carbon returns to the high velocity region in the bottom of gasifier, then gasification reaction further occurs. By this way, internal circulation in the gasifier was formed, gasification reaction time and efficiency increased. The experimental results indicate that gas yield (1.6-1.9Nm<sup>3</sup>/kg fuel), gas heat values (5340kJ/Nm<sup>3</sup> for wood chip fuel and 4880kJ/m<sup>3</sup> for rice husk), and gasification efficiency (70%) can be obtained using this kind of gasifier in the optimal operational temperature range of 790-850°C. Copyright ©2005 by ASME.
语种：
英文
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Synthesis of spirobenzopyrans bearing macrocyclic dioxopolyamine
作者：
Xiong, WC;Yuan, P;Yin, J;Liu, SH*
期刊：
Molecular Crystals and Liquid Crystals ,2005年428(1):127-130 ISSN：1542-1406
通讯作者：
Liu, SH
作者机构：
[Yin, J; Yuan, P; Liu, SH; Xiong, WC] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Liu, SH] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Macrocyclic dioxopolyamine;Photochromic;Spirobenzopyran;Transition metal cations
摘要：
Six novel spirobenzopyrans bearing macrocyclic dioxopolyamine were synthesized. Their photochromic, transition metal cations-induced photochromic properties were investigated. Copyright ©Taylor &Francis Inc.
语种：
英文
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纳米二氧化钛分离富集ICP-AES测定镉、钴、锌的研究
作者：
Shi, TQ* ;Liang, P;Li, J;Lu, HB
期刊：
光谱学与光谱分析 ,2005年25(3):444-446 ISSN：1000-0593
通讯作者：
Shi, TQ
作者机构：
[Shi, TQ] Jinggangshan Normol Coll, Jian 343009, Peoples R China.;Cent China Normal Univ, Ctr Anal & Testing, Wuhan 430079, Peoples R China.
通讯机构：
[Shi, TQ] J;Jinggangshan Normol Coll, Jian 343009, Peoples R China.
关键词：
纳米二氧化钛;分离富集;镉;钴;锌
摘要：
建立了纳米二氧化钛分离富集, 电感耦合等离子体原子发射光谱(ICP-AES)测定镉、钴和锌的新方法. 考察了溶液pH值、洗脱条件和干扰离子等因素对分析物分离富集的影响. 结果表明, 在pH 9～10范围内, Cd, Co和Zn可被纳米TiO2定量富集, 吸附于纳米TiO2上的金属离子可用0.1 mol·L-1的硝酸溶液完全解脱. 在优化的实验条件下, 纳米TiO2对Cd, Co和Zn的吸附容量分别为8.1, 6.9和15.1 mg·g-1. 本法对Cd, Co和Zn的检出限(3σ)分别为: 5.1, 3.4和2.9 ng·mL-1, 相对标准偏差(RSD)分别为4.3%, 4.6%和4.9%(n=9, c= 0.1 μg·mL-1). 该方法已成功地应用于环境样品中镉、钴和锌的测定, 分析结果满意.
语种：
中文
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Theoretical study toward understanding the catalytic mechanism of pyruvate decarboxylase
作者：
Wang, JY;Dong, H;Li, SH* ;He, HW
期刊：
JOURNAL OF PHYSICAL CHEMISTRY B ,2005年109(39):18664-18672 ISSN：1520-6106
通讯作者：
Li, SH
作者机构：
[Li, SH] Nanjing Univ, Lab Mesoscop Chem, Inst Theoret & Computat Chem, Dept Chem, Nanjing 210093, Peoples R China.;Cent China Normal Univ, Inst Organ Synth Chem Coll, Wuhan 430079, Peoples R China.
通讯机构：
[Li, SH] N;Nanjing Univ, Lab Mesoscop Chem, Inst Theoret & Computat Chem, Dept Chem, Nanjing 210093, Peoples R China.
摘要：
Density functional calculations are employed to explore the mechanisms of all elementary reaction steps involved in the catalytic cycle of pyruvate decarboxylase (PDC). Different models are constructed for mimicking the involvement of some key residues in a certain step. The effect of the protein framework on the potential energy profiles of active site models is approximately modeled by fixing some freedoms, based on the crystal structure of the PDC enzyme from Saccharomyces cerevisiae (ScPDC). Our calculations confirm that Glu51 is the most important residue in the formation of the ylide and the release of acetaldehyde via the proton relay between Glu51, N<inf>1'</inf>, and the 4'-amino group of thiamine diphosphate. The presence of Glu477 and Asp28 residues makes the decarboxylation of lactylthiamin diphosphate (LThDP) an endothermic process with a significant free energy barrier. The protonation of the α-carbanion to form 2-(1-hydroxyethyl)-thiamin diphosphate is found to go through a concerted double proton transfer transition state involving both Asp28 and His115 residues. The final step, acetaldehyde release, is likely to proceed through a concerted transition state involving carbon-carbon bond-breaking and the deprotonation of the α-hydroxyl group. The decarboxylation of LThDP and the protonation of the α-carbanion are two rate-limiting steps, relative to the facile occurrence of the ylide formation and acetaldehyde release. The catalytic roles of residues Glu51, Glu477, Asp28, and Gly417 in the active site of ScPDC in individual steps elucidated from the present study are in good agreement with those derived from site-directed mutagenesis. ©2005 American Chemical Society.
语种：
英文
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四苯基卟啉类光敏剂在醇-酸体系中的光谱性质研究
作者：
肖竦;刘怀志
期刊：
影像科学与光化学 ,2005年23(4):274-280 ISSN：1674-0475
通讯作者：
Xiao, S.
作者机构：
[肖竦] Department of Chemistry, Guiyang Medical College, Guiyang 550004, China;[刘怀志] Department of Chemistry, Central China Normal University, Wuhan 430070, China
通讯机构：
[Xiao, S.] D;Department of Chemistry, , Guiyang 550004, China
关键词：
光敏剂;四苯基卟啉类化合物;醇-酸体系;光谱性质
摘要：
研究了四苯基卟啉类光敏剂在醇-酸体系中的光谱性质,以及在此体系中浓度、酸度、表面活性剂等因素对其光谱性质的影响,首次发现在醇-酸体系中四苯基卟啉类光敏剂的光谱性质发生改变,靠近红外区均有中强度吸收,它们在可见光波长的激发下能产生在近红外区的荧光峰,与硫酸比较而言,盐酸配制的醇-酸体系优于硫酸体系.醇与酸的配比最好选择10:1,酸的最佳浓度选择1 mol·L-1.优选出四-(p-甲基苯基)卟啉和四-(p-甲氧基苯基)卟啉这两种光敏活性物质.
语种：
中文
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联苯胺对牛血清白蛋白的荧光猝灭作用研究
作者：
于兵川;吴洪特;周培疆;南淑清;陆光汉;...
期刊：
中国环境科学 ,2005年25(6):714-718 ISSN：1000-6923
通讯作者：
Yu, B.-C.
作者机构：
武汉大学资源与环境科学学院,湖北,武汉,430079;长江大学化学与环境工程学院,湖北,荆州,434025;华中师范大学化学学院,湖北,武汉,430070;[周培疆; 于兵川; 南淑清] 武汉大学;[吴洪特] 长江大学
通讯机构：
College of Resources and Environmental Sciences, Wuhan University, China
关键词：
联苯胺（BD）;牛血清白蛋白（BSA）;相互作用;荧光猝灭
摘要：
用荧光光谱和紫外吸收光谱研究了联苯胺(BD)对牛血清白蛋白(BSA)的荧光猝灭作用.结果表明,联苯胺可以有规律地使BSA内源荧光猝灭,其猝灭机理为联苯胺与BSA形成复合物的静态猝灭.获得了不同温度下,联苯胺与BSA作用的结合常数和热力学参数,根据所得结果可推断联苯胺与BSA的主要作用力为氢键和范德华力.由Forster非辐射能量转移理论计算得出了联苯胺与BSA结合位置的距离.
语种：
中文
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A simple approach to reactivate silver-coated titanium dioxide photocatalyst
作者：
Zhang, LZ* ;Yu, JC
期刊：
Catalysis Communications ,2005年6(10):684-687 ISSN：1566-7367
通讯作者：
Zhang, LZ
作者机构：
Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China.;[Zhang, LZ] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Luoyu Rd 152, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, LZ] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Luoyu Rd 152, Wuhan 430079, Peoples R China.
关键词：
Ambient light;Deactivation;Regeneration;Silver;Titanium dioxide
摘要：
Deactivated silver-coated TiO2 photocatalyst can be easily reactivated by ambient light illumination. The process converts Ag0 to Ag(I) in the form of Ag2O. When the activated catalyst is used in photocatalysis, Ag(I) would be eventually reduced to Ag0 forming fresh non-aggregated silver nanoparticles on TiO2. The presence of some transitory Ag+ ions during photocatalysis can help to oxidize species adsorbed on the catalyst and regenerate a clean surface. This simple approach should be very useful for designing maintenance-free photocatalytic air purification systems. © 2005 Elsevier B.V. All rights reserved.
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英文
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Preparation and characterization of LiNi0.85 Co0.10 Al0.05 O2 as cathode material
作者：
Zhu, XJ* ;Zhan, H;Zhou, YH
期刊：
稀有金属材料与工程 ,2005年34(12):1862-1865 ISSN：1002-185X
通讯作者：
Zhu, XJ
作者机构：
[Zhu, XJ] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.;Wuhan Univ, Wuhan 430072, Peoples R China.
通讯机构：
[Zhu, XJ] C;Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
关键词：
锂离子电池;正极材料;共掺杂
摘要：
以LiOH·H2O,Ni2O3,Co2O3和Al(OH)3为原料,采用固相反应法合成Co-Al共掺入LiNiO2的化合物LiNi0.85Co0.10Al0.05O2,由TG-DTA,XRD,SEM,DSC和电化学测试表征材料.结果表明,该材料首次放电容量达186.2mAh/g(3.0 V～4.3 V,18 mA/g),10次循环之后,容量还有180.1 mAh/g,容量保持率为96.7%;与未掺杂的LiNiO2相比,该材料显示出良好的循环性能,且热稳定性也有所提高,是一种很有应用前景的锂离子电池正极材料.
语种：
中文
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硅钨钼酸掺杂聚苯胺催化合成丁酮1,2-丙二醇缩酮
作者：
杨水金;王敏
期刊：
北京化工大学学报(自然科学版) ,2005年32(5):88-91 ISSN：1671-4628
通讯作者：
Yang, S.-J.
作者机构：
[杨水金] Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China;[王敏] College of Chemistry, Central China Normal University, Wuhan 430079, China
通讯机构：
[Yang, S.-J.] D;Department of Chemistry and Environmental Engineering, Hubei Normal University, China
关键词：
丁酮;1,2-丙二醇缩酮;硅钨钼酸;聚苯胺;缩酮;催化
摘要：
自制了硅钨钼酸(H4SiW6Mo6O40)掺杂聚苯胺(PAn)催化剂H4SiW6Mo6O40/PAn.通过丁酮和1,2-丙二醇为原料合成丁酮1,2-丙二醇缩酮,探讨了硅钨钼酸掺杂聚苯胺催化剂对缩酮反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素对产品收率的影响.实验表明:硅钨钼酸掺杂聚苯胺是合成丁酮1,2-丙二醇缩酮的良好催化剂,在n(丁酮):n(1,2-丙二醇)=1:1.7,催化剂用量为反应物料总质量的0.6%,环己烷为带水剂,反应时间40min的优化条件下,丁酮1,2-丙二醇缩酮的收率可达83.1%.
语种：
中文
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Quantitative determination of zinc in milkvetch by anodic stripping voltammetry with bismuth film electrodes
作者：
Guo, ZY;Feng, F;Hou, YX* ;Jaffrezic-Renault, N
期刊：
Talanta ,2005年65(4):1052-1055 ISSN：0039-9140
通讯作者：
Hou, YX
作者机构：
[Hou, YX] Yanbei Normal Inst, Dept Chem, Datong 037000, Peoples R China.;Ecole Cent Lyon, CEGELY, UMR CNRS 5005, F-69134 Ecully, France.;Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Hou, YX] Y;Yanbei Normal Inst, Dept Chem, Datong 037000, Peoples R China.
关键词：
bismuth film electrodes;anodic stripping voltammetry;milkvetch;nutritive element
摘要：
Bismuth film electrode (BiFE) was shown to be an attractive alternative to common mercury film electrode (MFE) for anodic stripping voltammetric measurements. In this study, bismuth film, that was in situ deposited onto glassy carbon electrode, was used to detect zinc content of milkvetch, used in traditional Chinese medicine. Variables affecting the response have been evaluated and optimized. Experimental results showed a high response, with a good linearity (between 0.5 ×10<sup>-6</sup> mol L<sup>-1</sup> and 3 ×10<sup>-6</sup> mol L<sup>-1</sup>) a good precision (R.S.D. = 3.58%) and a low detection limit (9.6 ×10<sup>-9</sup> mol L<sup>-1</sup> with a 120 s anodic). The anodic stripping performance makes the bismuth film electrode very desirable for measurements of trace nutritive element zinc in milkvetch and should impart possible restrictions on the use of mercury electrode. ©2004 Elsevier B.V. All rights reserved.
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Electrochemical determination of bromide at a multiwall carbon nanotubes-chitosan modified electrode
作者：
Zeng, Y;Zhu, ZH;Wang, RX;Lu, GH*
期刊：
Electrochimica Acta ,2005年51(4):649-654 ISSN：0013-4686
通讯作者：
Lu, GH
作者机构：
[Lu, GH] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.;Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.;Chizhou Teachers Coll, Dept Chem, Guichi 247000, Peoples R China.
通讯机构：
[Lu, GH] C;Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
关键词：
Bromide;Cathodic stripping voltammetry;Chitosan;Modified glassy carbon electrode;Multiwall carbon nanotubes (MWNTs)
摘要：
A multiwall carbon nanotubes (MWNTs)-chitosan modified glassy carbon electrode (GCE) exhibits attractive ability for highly sensitive cathodic stripping voltammetric measurements of bromide (Br<sup>-</sup>). In pH 1.8 H<inf>2</inf>SO<inf>4</inf> solution, a substantial increase in the stripping peak current of Br<sup>-</sup> (compared to bare GCE and chitosan modified GCE) is observed using MWNTs-chitosan modified electrode. Operational parameters were optimized and the electrochemical behaviors of Br<sup>-</sup> were studied by different electrochemical methods. The kinetics parameters were measured, the number of electron transfer (n) was 1 and the transfer coefficient (α) is 0.17. A wide linear calibration range (3.6 ×10<sup>-7</sup>-1.4 ×10<sup>-5</sup> g mL<sup>-1</sup>) was achieved, with a detection limit of 9.6 ×10<sup>-8</sup> g mL<sup>-1</sup>. The mechanism of electrode reaction was fully discussed. ©2005 Elsevier Ltd. All rights reserved.
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Synthesis and properties of conjugated bimetallic ruthenium complexes with σ,σ-bridging azobenzene chains
作者：
Yin, J;Yu, GA;Guan, JT;Mei, FS;Liu, SH*
期刊：
Journal of Organometallic Chemistry ,2005年690(19):4265-4271 ISSN：0022-328X
通讯作者：
Liu, SH
作者机构：
[Yin, J; Mei, FS; Liu, SH; Guan, JT; Yu, GA] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Liu, SH] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Azobenzene;Bimetallic;Ruthenium complex;Synthesis;Photoisomerization;Electrochemistry
摘要：
A versatile synthetic route to conjugated bimetallic ruthenium complexes with σ,σ-bridging azobenzene chains was developed, and new ruthenium complexes with various ligands were synthesized and characterized. These bimetallic complexes showed a remarkable absorption in the visible region (λ<inf>max</inf>: 452-483 nm), and undergo trans-to-cis isomerization under UV light irradiation for short time. Electrochemical study showed that the metal centers in bimetallic complexes containing the CHCHC<inf>6</inf>H <inf>4</inf>NNC<inf>6</inf>H<inf>4</inf>CHCH bridge interact with each other. ©2005 Elsevier B.V. All rights reserved.
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Synthesis and characterization of C10H10-bridged bimetallic ruthenium complexes
作者：
Liu, SH* ;Hu, QY;Xue, P;Wen, TB;Williams, ID;...
期刊：
Organometallics ,2005年24(4):769-772 ISSN：0276-7333
通讯作者：
Liu, SH
作者机构：
Hong Kong Univ Sci & Technol, Dept Chem, Inst Mol Technol Drug Discovery & Synth, Kowloon, Hong Kong, Peoples R China.;Hong Kong Univ Sci & Technol, Open Lab Chirotechnol, Inst Mol Technol Drug Discovery & Synth, Kowloon, Hong Kong, Peoples R China.;Cent China Normal Univ, Coll Chem, Key lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Liu, SH] Hong Kong Univ Sci & Technol, Dept Chem, Inst Mol Technol Drug Discovery & Synth, Clear Water Bay, Kowloon, Hong Kong, Peoples R China.
通讯机构：
[Liu, SH] H;Hong Kong Univ Sci & Technol, Dept Chem, Inst Mol Technol Drug Discovery & Synth, Clear Water Bay, Kowloon, Hong Kong, Peoples R China.
摘要：
Treatment of RuHCl(CO)(PPh<inf>3</inf>)<inf>3</inf> with (3E,5E, 7E)-HC=CCH=CHCH=CHCH=CHC≡CH produces [RuCl(CO)(PPh<inf>3</inf>) <inf>2</inf>]<inf>2</inf>(μ-CH=CHCH=CHCH= CHCH=CHCH=CH). The latter complex reacts with PMe<inf>3</inf> to give [RuCl(CO)(PMe<inf>3</inf>)<inf>3</inf>] <inf>2</inf>(μ-CH=CHCH=CHCH= CHCH=CHCH=CH), the structure of which has been confirmed by X-ray diffraction. The electrochemical properties of the latter C<inf>10</inf>H<inf>10</inf>-bridged complex have been investigated.
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英文
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Application of multiwalled carbon nanotubes as solid phase extraction sorbent for preconcentration of trace copper in water samples
作者：
Liang, P* ;Ding, Q;Song, F
期刊：
JOURNAL OF SEPARATION SCIENCE ,2005年28(17):2339-2343 ISSN：1615-9306
通讯作者：
Liang, P
作者机构：
[Song, F; Liang, P; Ding, Q] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Liang, P] C;Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
关键词：
Copper;FAAS;Multiwalled carbon nanotubes;Solid phase extraction
摘要：
The adsorption behavior of multiwalled carbon nanotubes (MWNTs) toward copper has been investigated systemically, and a new method has been developed for the determination of trace copper in water samples based on preconcentration with a microcolumn packed with MWNTs prior to its determination by flame atomic absorption spectrometry. The optimum experimental parameters for preconcentration of copper, such as pH of the sample, sample flow rate and volume, elution solution and interfering ions, have been investigated. Copper can be quantitatively retained by MWNTs in the pH range 5-8, and then eluted completely with 0.5 M HNO<inf>3</inf>. The detection limit of this method for Cu was 0.42 ng/mL, and the RSD was 3.5% at the 10 ng/mL Cu level. The method was validated using a certified reference material, and has been successfully applied for the determination of trace copper in water samples. ©2005 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim.
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英文
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Study of Langmuir and Langmuir-Blodgett films of odorant-binding protein/amphiphile for odorant biosensors
作者：
Hou, YX
* ;Jaffrezic-Renault, N;Martelet, C;Tlili, C;Zhang, A
（ ;...
期刊：
LANGMUIR ,2005年21(9):4058-4065 ISSN：0743-7463
通讯作者：
Hou, YX
作者机构：
[Hou, YX] Ecole Cent Lyon, Ctr Genie Elect Lyon, CEGELY, F-69134 Ecully, France.;Cent China Normal Univ, Col Chem, Wuhan 430079, Peoples R China.;INRA, F-78352 Jouy En Josas, France.;Lab NanoBioEngn, E-08028 Barcelona, Spain.;CNRS, LAAS, F-31077 Toulouse, France.
通讯机构：
[Hou, YX] E;Ecole Cent Lyon, Ctr Genie Elect Lyon, CEGELY, F-69134 Ecully, France.
摘要：
To make ultrathin films for the fabrication of artificial olfactory systems, odorant biosensors, we have investigated mixed Langmuir and Langmuir-Blodgett films of odorant-binding protein/amphiphile. Under optimized experimental conditions (phosphate buffer solution, pH 7.5, OBP-1F concentration of 4 mg L<sup>-1</sup>, target pressure 35 mN m<sup>-1</sup>), the mixed monolayer at the air/water interface is very stable and has been efficiently transferred onto gold supports, which were previously functionalized by self-assembled monolayers (SAMs) with 1-octadecanethiol (ODT). Atomic force microscopy and electrochemical impedance spectroscopy were used to characterize mixed Langmuir-Blodgett (LB) films before and after contact with a specific odorant molecule, isoamyl acetate. AFM phase images show a higher contrast after contact with the odorant molecule due to the new structure of the OBP-1F/ODA LB film. Non-Faradaic electrochemical spectroscopy (EIS) is used to quantify the effect of the odorant based on the electrical properties of the OBP-1F/ODA LB film, as its resistance strongly decreases from 1.18 MΩ(before contact) to 25 kΩ(after contact). ©2005 American Chemical Society.
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