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Catalyst Transfer Polycondensation as a Tool to Access New n-Type Semiconducting Polymers and their Application in Organic Electronics

催化剂转移缩聚作为获取新型 n 型半导体聚合物的工具及其在有机电子中的应用

基本信息

批准号：
246453121
负责人：
Privatdozent Dr. Frank Pammer
金额：
--
依托单位：
Fachbereich Chemie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/246453121?language=en
关键词：
Catalyst Transfer Polycondensation Tool Access

项目摘要

This project is concerned with the synthesis of new conjugated polymers that shall serve as electron conductors (n-type materials) in organic photovoltaic cells (OPVs) and field effect transistors (OFETs).In recent years, preparative methods have emerged that allow for the quasi-living cross-coupling polymerization (generally termed chain-growth Catalyst Transfer Polycondensation, CTP), and grant access to all-conjugated rod-rod block-copolymers. The synthesis of electron rich hole-conducting (p-type) polymers via CTP is a well-developed, active area of research. However, only limited attempts have been made to access potential n-type acceptor materials.The project proposed herein is aimed at developing the quasi-living polymerization of electron deficient S,N-heterocycles (thiazole, benzothiadiazole) that can serve as n-type semiconductors. The potentialities of these building blocks have been demonstrated via the fabrication of oligo-thiazole based n-channel OFETs that exhibited electron mobilities exceeding 1 cm2/Vs. Thiazole based homopolymers, however, have been investigated in much less detail and, to date, have not been accessed via CTP.In the course of this project, the mechanism of the CTP-polymerization of the respective building blocks will be investigated in detail. The electron conducting properties of the thus obtained materials shall be characterized by incorporation into n-channel OFETs and OPVs.The eventual goal of this project is the synthesis of rod-rod block copolymers composed of an electron rich donor block (e.g. poly(3-alkylthiophene)) and an electron deficient acceptor block (e.g. poly(4-alkylthiazole). Similar block copolymers have been shown to self-assemble into phase separated lamellar structures that represent the ideal morphology of the active layer of an OPV.

本项目主要研究新型共轭聚合物的合成，这些共轭聚合物将作为有机光伏电池（OPV）和场效应晶体管（OFV）的电子导体（n型材料）。近年来，出现了准活性交叉偶联聚合（通常称为链增长催化剂转移缩聚（CTP））和全共轭棒-棒嵌段共聚物的制备方法。通过CTP合成富电子空穴导电（p型）聚合物是一个成熟的、活跃的研究领域。然而，只有有限的尝试已经取得了潜在的n型受体材料。本文提出的项目的目的是开发准活性聚合的缺电子的S，N-杂环（噻唑，苯并噻二唑），可以作为n型半导体。这些结构单元的潜力已经通过制造低聚噻唑基n-通道OFFEs得到了证明，其电子迁移率超过1 cm 2/Vs。然而，噻唑基均聚物的研究细节要少得多，迄今为止，还没有通过CTP获得。在本项目的过程中，将详细研究各个结构单元的CTP聚合机理。由此获得的材料的电子传导性能的特征在于纳入n-沟道OFVs和OPV。该项目的最终目标是合成由富电子供体嵌段（例如聚（3-烷基噻吩））和缺电子受体嵌段（例如聚（4-烷基噻唑））组成的棒-棒嵌段共聚物。类似的嵌段共聚物已显示自组装成相分离的层状结构，其代表OPV的活性层的理想形态。