硅杂环戊二烯共轭低聚物的设计、合成及光电性能

项目名称： 硅杂环戊二烯共轭低聚物的设计、合成及光电性能

项目编号： No.20872035

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 化学工业

项目作者： 王成云

作者单位： 华东理工大学

项目金额： 33万元

中文摘要： 有机π20849;轭化合物是有机功能材料界的一个研究热点，本项目的研究特色在于设计并合成了一系列结构新颖的炔基化硅杂环戊二烯（Silole）共轭聚合物。在此基础上，研究了它们的各种性能，包括：合成方法对分子结构的有效调控、对分子量分布的影响、光吸收和发射、化学传感器性能、分子结构对其光电性能的影响等。结果表明：所合成的树枝状和超支化聚合物具有与以往报道不同的聚集发光增强效应（AIE），并且能高效、灵敏地用于检测多硝基爆炸物，检测限达到ppm级，这对维护公共安全有重要意义。这些聚合物不仅具有较高的荧光量子效率，较低的能带隙，而且可以溶于四氢呋喃，氯仿，甲苯等常规溶剂，这表明它们的加工性能将获得提升。此外，本项目还合成了TTF与炔基化芴、炔基化咔唑、卟啉、苝酰亚胺等具有荧光的功能分子的组装物（Dyad 和Triad）和低聚物（Oligomer），用吸收光谱、荧光光谱、循环伏安等手段研究了这类组装物分子中这两个单元间的电荷转移现象和分子荧光开关性能。共发表了研究论文11篇（9篇被SCI收录,其中3篇同时被SCI和EI收录，2篇国内核心期刊），培养了2名博士和6名硕士，圆满地完成了本项目。

中文关键词： 有机π20849;轭化合物；硅杂环戊二烯；树枝状及超支化聚合物；化学传感器；四硫代富瓦烯

英文摘要： Organic πonjugated compounds are paid much attention in the field of the functional materials. A series of novel conjugated polysiloles rich in acetylenic functionality were designed and synthesized by various kinds of methods. Their performances were investigated, such as, the effect of synthetic methods on the molecular structure and weight of the polymers, light absorption and emission, chemosensor for nitroaromatic compounds, the effect of molecular structure on the photoelectric materials. The polymers possess aggregation-enhanced emission (AEE) which is different from that of siloles reported by previous literatures, and can be used in detecting TNT and PA sensitively, the detective limits attained 1 ppm, the result is important to keep public security. The polymers obtained possess not only higher fluorescence quantum efficiency and unusually narrow band gaps, but also higher solubility in normal organic solvents, such as, tetrathiafulvalene(THF), CHCl3, Toluene, which indicated their processability would be increased. In addition, some other assamblys (dyad, triad and oligomer),such as TTF-porphyrin, TTF-perylene tetracarboxylic diimide, TTF-Fluorene and TTF-carbazole were synthesized as well. Their properties, such as intramolecular photo-induced charge transfer intereaction and fluorescence molecular switch, were researched by means of UV-vis and Fluorescence spectra and cyclic voltamery. In total, 11 papers are published，two doctoral and six master students were educated.

英文关键词： Organic πonjugated compounds; Siloles; dendritic and hyperbranched polymers; chemosensor; tetrathiafulvalene