基于四苯基乙烯的折叠型空间共轭有机高分子：分子设计、合成、性能和应用

项目名称： 基于四苯基乙烯的折叠型空间共轭有机高分子：分子设计、合成、性能和应用

项目编号： No.51273053

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 赵祖金

作者单位： 华南理工大学

项目金额： 80万元

中文摘要： 具有空间共轭特性的分子是一类新颖的共轭基团，在光电功能材料领域具有巨大潜在应用价值，但是目前文献报道的空间共轭分子种类相当有限，由其构筑的功能高分子更是寥寥无几，对这类材料的构效关系和应用研究有待进行。四苯基乙烯是一个典型的具有聚集诱导发光特性的功能分子，广泛应用于高效率发光材料的构建。将四苯基乙烯引入到一个折叠型分子构型中，所得分子可以通过分子内π-π相互作用实现空间共轭，这些分子与文献报道的空间共轭分子不同，具有独创性。研究显示这些分子不仅具有优异发光性能而且还同时具有很高的电子和空穴迁移率。本申请拟在前期工作基础上，建立一个崭新的空间共轭分子体系，合成一系列基于四苯基乙烯的折叠型空间共轭有机分子和功能高分子，研究该类材料的各项光物理性能与构效关系，特别是空穴和电子的传输能力与能量转移情况，探索材料在单层聚合物电致发光二极管中的应用，开发出新型高性能的具有实际应用前景的空间共轭材料。

中文关键词： 空间共轭；折叠分子；单分子导线；多通道电导；能量转移

英文摘要： Through-space conjugated molecules are novel building blocks for the construction of optoelectronic functional materials. Such kinds of small molecules as well as polymers based on them, however, are rarely reported. The structure-property relationship of such materials is not well-established and the optoelectronic devices based on them remain unexplored either. Tetraphenylethene is a typical luminogen featured with aggregation-induced emission, which has been widely used to construct efficient light-emitting materials. Previous studies have demonstrated that through-space conjugated molecules are achievable by endowing tetraphenylethene with a folded molecular conformation, where intramolecular π-π interactions occur between the stacked phenyl rings. These tetraphenylethene-based folded molecules show not only excellent fluorescence quantum yields up to unity but also fast hole and electron mobility. With the success achieved previously, a series of elaborate folded molecules based on tetraphenylethene will be synthesized and characterized, based on which functional polymers will be prepared. The photophysical properties of the small molecules and polymers will be investigated. Single-layer organic light-emitting diodes will be fabricated using the new polymers as active layer and the electroluminescence prope

英文关键词： through-space conjugation；folded molecules；single-molecule wire；mutliconductance；energy transfer