Acetylcholinesterase amperometric detection system based on a cobalt(II) tetraphenylporphyrin-modified electrode

An acetylcholinesterase (AChE) activity detection system was fabricated based on the electrocatalysis of cobalt(II) tetraphenylporphyrin of the electrooxidation of thiocholine chloride, which is the product of the hydrolysis of acetylthiocholine chloride by AChE. A simple modified method was used to form the base electrode. AChE was cross-linked on the base electrode by glutaraldehyde. The optimum working conditions are discussed and the characteristics of the detection system are evaluated.

Reactions of C-60 with R(3)SnH: A new synthetic route to C-60(RH)(n) and the property of C-60 to catalyze radical reactions

A new method for the preparation of polyalkyl and polyarenefullerene derivatives C-60(RH)(n)(R=Bu,n=1-3; R=Ph,n=1-10) by the reaction of C-60 with organotin hydride in toluene is described. Another series of products of stannanes R(a)Sn(b)H(c) (R=Bu, a=3-8, b=1-4, c=0-3 R=Ph, a=3-11, b=1-5, c=0-4) were also obtained, which shows that C-60 can catalyze polymerization of organic-tin. These products were determined by mass and infrared spectrometry. And the possible reaction mechanisms are discussed.

Studies on preparation, characterization of cobalt(II) phenanthroline and 8-hydroxyquinoline complexes/Y zeolite, and catalytic hydroxylation of phenol

Cobalt(II) phenanthroline and 8-hydroxyquinoline complexes/Y zeolite, denoted as CoPhen/Y and CoOx/Y respectively, were prepared, The formation of the metal complexes mentioned above within the cages of Y zeolite and their crystal structures were determined by elementary analyses, TG-DTA, diffuse reflectance UV-Vis, SEM, BET and XRD methods. The influence of experimental parameters upon phenol conversion and product selectivities was investigated as well.

A study of the radical reaction of C-60 with n-Bu(3)SnH

The reaction of buckministerfullerene (C-60) with tri-n-blltyltin hydride(n-Bu(3)SnH) in toluene solution has been investigated. According to mass spectrometry analysis, the products of above reaction are C-60(BuH)(n)(n = 1 similar to 3) and Bu(x)Sn(y)H(x) (x = 3 similar to 8, y = 1 similar to 4,approximate to = 0 similar to 3). The reaction maybe provide a new method for the synthesis of alkylated fullerene derivatives. Where C-60 also takes a role of a catalysis of organtic-tin polymerization. The radical reaction mechanism has been discussed.

Convenient preparation and properties of C-60(OH)(x)

In this paper, we introduce a very convenient method to produce water soluble C-60 derivatives- fullerols by the reaction of C-60 with potassium in toluene solution, FT-IR, H-1 NMR and FABMS proved the multi-hydroxyl and C-60 cage structures of the products, The properties of unstability to light, heat, basicity of aqueous solution and the solubility in some common polar solvents were also described.

C_（60）（OH）_x的简便合成及性质

Ｃ_（６０）（ＯＨ）_ｘ的简便合成及性质孙大勇，刘子阳，郭兴华，佘益民，周雨，刘淑莹（中国科学院长春应用化学研究所应用谱学开放实验室，长春，１３００２２）关键词Ｃ_（６０），水溶性富勒醇，钾，不稳定性，溶解度水溶性Ｃ６０化合物的合成及性质研究作为Ｃ６０?..

C_（60）与n－Bu_3SnH的自由基反应研究

Ｃ_（６０）与ｎ－Ｂｕ_３ＳｎＨ的自由基反应研究余益民，郭兴华，刘子阳，刘淑莹，傅芳信，钱明星（中国科学院长春应用化学研究所，长春，１３００２２）（东北师范大学化学系）关键词自由基反应，富勒烯，三丁基锡氢化物，自由基海绵自Ｋｒａｔｓｃｈｍｅｒ等［１］实...

C_（60）与功能材料

本文简要回顾Ｃ（６０）发展十年来在功能材科研究领域取得的进展，对一些具有潜在应用前景的研究方向加以简要介绍。

C_(60)的二聚合现象

C_(60)的聚合反应是一项十分有意义的研究课题。“珍珠项链”式的C_(60)聚合物将具有优良的导电和非线性光学性能,有可能成为新型功能高分子材料。自Yeretzian等人于1992年采用激光蒸发C_(60)膜率先在气相中实现C_(60)聚合以来,这一领域的研究一直方兴未艾。但总体来看,采用激光等手段尚不能得到宏观量的结构规整的聚合物。1994年瑞士科学家Pekker等人采用金属钾与C_(60)高温蒸气的反应,在特定的温区得到聚合度逾100000的C_(60)线性聚合物,表明钾对于

交联XE－60和PEG－20M极性固定相非晶硅膜改性弹性玻璃毛细管柱研究

研究了交联ＸＥ－６０和ＰＥＧ－２０Ｍ极性固定相非晶硅膜改性弹性玻璃毛细管柱，在适当的温度下，用过氧化二异丙苯（ＤＣＵＰ）游离基引发交联，成功地制备了ＸＥ－６０和ＰＥＧ－２０Ｍ极性柱，它们均具有柱效高、惰性好、化学稳定性好和耐溶剂、抗腐蚀、耐高温等性能，是一种新型的极性交联柱。

水溶性C_（60）衍生物的合成及其生物活性

综述近年在水溶性Ｃ_（６０）衍生物合成及生物活性方面所取得的进展。

GAS-PHASE REACTIONS OF C-60 WITH THE ION SYSTEMS OF CYCLOHEXANE AND CYCLOHEXENE

The DCI MS of C-60 with the reactions of gaseous cyclohexane and cyclohexene have been studied. Several kinds reactions of C-60 have been observed. The results show that the gasphase C-60 has very active chemical properties. The adduct ions of [C60C4H7](+) and [C60C5H7](+) may be formed by [2+4] cycloaddition where one of double bonds of C-60 acted as a dienophilic unit.

GAS-PHASE SYNTHESIS OF DERIVATIVE OF C-60-C60S+

Gas phase ion-molecular reactions of C-60 with the ion system of CS2 have been studied in the ion source of mass spectrometer. It was found for the first time that the sulfuric derivative of C-60-C60S+ was the main ions in the ion source, they did not react with C-60 to form adduct ions due to their highly saturated structures. According to the dynamic analysis, the product ion came from the reaction of C-60 with the fragment ion S+. The adduct ion may have the structure of epsulfide that is advantageous in energy.

GAS-PHASE ION-MOLECULE REACTIONS OF BUCKMINSTERFULLERENE C-60 WITH SOME SMALL ORGANIC-COMPOUNDS IN MASS-SPECTROMETER

In chemical ionization mass spectrometry (CIMS) gas phase C-60(+) or C-60 can react with fragment ions from three chloromethane and four multichloroethane molecular ions via ion-molecule reactions. A dozen of gas-phase adduct ions of C-60 are observed, and most of them contain chlorine atoms. The results of the comparison and analysis show that the relative intensities of adductions are not directly proportional to the corresponding fragment ions in the MS of reagents,which implies that some fragment ions containing radicals are more reactive with C-60(+) or C-60. This indicates that the alkene-like C-60(+) or C-60 can act as a radical sponge in addition reactions.

STUDIES ON PREPARATION OF IRON, COBALT AND COPPER PHTHALOCYANINES Y ZEOLITE - CHARACTERIZATION AND THEIR CATALYSIS FOR HYDROXYLATION OF PHENOL

Iron, cobalt and copper phthalocyanines/Y zeolite, denoted as FePcY, CoPcY and CuPcY respectively,were prepared. The formation of metal phthalocyanine compounds within the cages of Y zeolite and their crystal structures were determined by elementary analyses, IR, UV-Vis, TG, BET, and XRD methods; The influence of experimental parameters upon phenol conversion and product selectivities was investigated as well.