【作者】 聂广明；

【导师】 张书圣； 徐景坤；

【作者基本信息】 青岛科技大学 ， 物理化学， 2005， 硕士

【摘要】 电化学方法是制备导电高分子的重要方法。以稠环芳香化合物作为单体电化学聚合制备高性能导电高分子是目前的研究热点之一。三氟化硼乙醚是一种中等强度的Lewis酸,可以作为噻吩、苯及其衍生物等芳香单体电化学法合成高性能导电高分子的良好电解质溶液。本论文主要是在三氟化硼乙醚及其与聚乙二醇、乙醚等形成的混合电解质中进行了吲哚、苯并呋喃、咔唑的电聚合,并对聚合物进行了表征。同时还研究了吲哚和3,4-二氧乙撑噻吩在乙腈中的电化学共聚合,并对共聚物进行了表征。 1、首次在三氟化硼乙醚中进行了吲哚的电化学聚合,可以获得高质量的自支撑聚吲哚膜。该体系中吲哚的氧化电位仅为0.86 V vs.SCE,其电导率约为10^-1 S cm^-1。聚合机理研究表明吲哚聚合发生在吲哚环的C2和C3位。制备的聚吲哚是一种良好的蓝色荧光材料。 2、首次在三氟化硼乙醚与聚乙二醇400（10%,体积比）形成的混合电解质中进行了苯并呋喃的电化学聚合获得了聚苯并呋喃膜,其电导率约为10^-2S cm^-1。该聚合物在掺杂态时为棕色透明,去掺杂态时呈现金黄色,且不溶于普通有机溶剂,如丙酮、乙腈、四氢呋喃等。 3、首次在三氟化硼乙醚溶液+乙醚（20%,体积比）溶液中实现了咔唑的电化学聚合,咔唑的氧化电位仅为0.9 V vs.SCE。聚咔唑膜的电导率为7.5×10^-3 S cm^-1,为文献报道电导率10倍左右。聚咔唑膜的热稳定性要好于在三氟化硼乙醚中制备的聚吲哚、聚对苯和聚噻吩。该体系中获得的聚咔唑是一种良好的蓝色荧光物质。 4、首次在含0.1 mol l^-1 LiClO₄的乙腈溶液中实现了吲哚和3,4.二氧乙撑噻吩的电化学共聚,共聚物同时拥有聚吲哚的热稳定性和良好的氧化还原特性以及聚（3,4-二氧乙撑噻吩）良好的室温稳定电导率,并详细研究了不同聚合电位和单体投料比对共聚物性质的影响。更多还原

【Abstract】 Electrochemical polymerization had been proved to be one of the most useful approaches for conducting polymer synthesis with several advantages. High-quality inherently conducting polymers prepared using fused ring aromatic compounds as monomers by electrochemical polymerization had attracted great attention in recent years. It is well known that boron trifluoride diethyl etherate （BFEE） solution is a middle strong Lewis acid. It is also a better electrolyte for the electrosyntheses of high quality conducting polymers from various aromatic monomers, such as thiophene, benzene and their derivatives. This dissertation focused on the electrosyntheses of high-quality conducting polymers from indole in pure BFEE, polybenzofuran from mixed electrolytes of BFEE and poly（ethylene glycol） oligomers, and polycarbazole from BFEE and diethyl ether. And the electrochemical copolymerization of indole and 3,4-ethylenedioxythiophene was also investigated in acetonitrile.1. High-quality free-standing polyindole （PIn） films with conductivity of 10^-1 S cm^-1 were synthesized electrochemically by direct oxidation of indole in pure BFEE. The oxidation potential of indole in this medium was measured to be only 0.86 V vs. SCE. Structural studies show that the polymerization of indole ring occurred at 2,3 position. Fluorescent spectral studies indicate that PIn is a good blue-light emitter.2. Visible-light transparent high-quality substrate-supported poly（benzofuran） （PBF） film with conductivity of 10^-2 S cm^-1 had been successfully electrosynthesized by direct anodic oxidation of benzofuran in BFEE containing 10% poly（ethylene glycol） （PEG） with molar mass of 400 （by volume）.更多还原