以乙基紫为活性物质的聚氯乙烯膜氰化亚金电极的研制和应用

以碱性染料为活性物质制备２０余种不同组分ＰＶＣ膜Ａｕ（ＣＮ）２＾－电极，确定较佳膜组成为乙基紫０．９９％，邻苯二甲酸二丁酯６９．２％，ＰＶＣ粉２９．８％。该电极对Ａｕ（ＣＮ）２＾－浓度在５．０×１０＾－７￣１．０×１０＾－２ｍｏｌ／Ｌ范围内接近能斯特响应；斜率为５５．７ｍＶ（３０℃）。稳定性与选择性较好。该电极制备简单，使用方便，已成功用于氰化镀金液中金的测定。     

镀金层识别及其厚度测定的X—荧光强度比值法

利用Ａｕ原子在Ｘ射线激发下所发射的Ｌβ线和Ｍ线的强度比值识别样品是镀金还是Ｋ金，同时利用这个比值测定镀金层的厚度，镀金层厚度的测定范围为０～４μｍ，测定值与标定值的相对误差小于１５％。     

Gold catalysis contra platinum catalysis in hydroarylation contra phenol synthesis

Three silylated γ-alkynylfurans were prepared and subjected to both gold and platinum catalysts. The TMS- and the TBDMS-substituted furans reacted. With AuCl₃ and the binuclear [(Ph₃PAu)₂Cl][BF₄] catalyst a hydroarylation of the alkyne was observed. Na[AuCl₄] gave phenols as the product, but these were formed only after in situ desilylation of the starting material by the gold catalyst and thus the wrong isomer dominated. Only with PtCl₂(MeCN)₂ phenols with a silyl group were formed. The TBDPS-substituted furan failed to react. Two alkynylsilanes were synthesized, but they also failed to react.     

Copper Promoted Au/ZnO-CuO Catalysts for Low Temperature Water-gas Shift Reaction

IntroductionThe water-gas shift(WGS)reaction is an impor-tant step in many important chemical processes[1].Re-cently,the renewed interest in the removal of CO bythe WGS reaction has grown significantly because of theincreasing attention to pure hydrogen p…     

在线分离光度法测定痕量金的研究

本提出了一种泡沫塑料柱在线分离富集／β－环糊精－十二烷基苯磺酸钠溶液在线洗脱／硫代米蚩酮光度法测定痕量金的新方法。方法的检测出限是３×１０＾－＾８ｇＡｕ，线性范围是５×１０＾－＾７－８×１０＾－＾６Ａｕ，对于１．０μｇＡｕ进行１１次测定，相对标准偏差小于３．０％。     

关于Liesegang环形成机理的研究

本文研究了Ｌｉｅｓｅｇａｎｇ环的形成，受到两扩散电解质溶液的浓度比、离子浓度积及光照等条件影响。侧重对成环的微观汇聚过程进行了探讨。     

Controllable self-assembly of parallel gold nanorod clusters by DNA origami

We demonstrate the self-assembly of three types of parallel gold nanorod clusters using a rod-like DNA origami as the template.     

Organogold(III) metallacyclic chemistry. Part 4. Synthesis, characterisation, and biological activity of gold(III)-thiosalicylate and -salicylate complexes

The silver(I) oxide mediated reactions of the gold(III) dichloride complex [{C₆H₃(CH₂

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uCl₂] 2a with thiosalicylic or salicylic acid gives the respective complexes [{C₆H₃(CH₂

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)-2}] 3a (X=S) or 6b (X=O), containing chelating thiosalicylate or salicylate dianion ligands. X-ray studies show that for the thiosalicylate system, the thiosalicylate sulfur atom is trans to the N,N-dimethylamino group, whereas in the structure of the salicylate complex, it is the carboxylate group that is trans to NMe₂. Both complexes show puckered metallacycles in the solid state. Electrospray mass spectrometry (ESMS) shows strong [M+H]⁺ and [2M+H]⁺ ions for both the gold-thiosalicylate and -salicylate complexes, and these ions possess a high stability towards cone voltage-induced fragmentation. ESMS was also used to identify a minor impurity, the bis(cyclo-aurated) cationic complex [A

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Me₂)-2-(OMe)-5}2]⁺ in the starting dihalide complex 2a and in the product 3a. This complex can be formed by reaction of Me₄N[AuCl₄] with 2 equivalents of the organomercury precursor [Hg{C₆H₃(CH₂NMe₂)-2-(OMe)-5}Cl]. The biological (antitumour, antimicrobial and antiviral) activities are also reported, and these reveal the complexes have moderate to high anti-tumour, antibacterial and antifungal activity.