多孔聚合物电介体的设计、合成及其有机晶体管存储器

项目名称： 多孔聚合物电介体的设计、合成及其有机晶体管存储器

项目编号： No.21504047

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 冯全友

作者单位： 南京邮电大学

项目金额： 21万元

中文摘要： 设计开发新型聚合物电介体材料对获得稳定高效的有机场效应晶体管存储器及其柔性器件具有重大意义。许多基于聚苯乙烯及其衍生物的线性聚合物或聚酰亚胺类电介体的存储性能欠佳，且其热稳定较差或合成路线复杂。聚合物电介体与存储性能参数的构效关系和存储机制也很不明晰，缺乏细致研究。根据文献调研和相关工作基础，本项目拟通过简单、无金属催化的傅克交联聚合合成热稳定性良好和可溶液加工的共轭打断的有机多孔聚合物。多孔结构的引入能有效地调控存储器件性能和提高基于复合电介体材料的柔性器件的机械稳定性。拟通过p-n能带调控理论调节聚合物的电子能级和将其他电子给体或受体等功能分子引入聚合物的孔结构，考察场诱导的分子内或分子间的电子转移对晶体管器件存储性能的影响，并研究和阐明电介体结构与存储性能之间的构效关系和存储机制。该研究有望为设计高效电介体材料提供借鉴思路，并为该类电介体的实用化提供技术支持。

中文关键词： 多孔聚合物；电介体；傅克反应；有机场效应晶体管；存储器

英文摘要： It is of great importance to design and develop novel polymer electret materials for achieving highly stable and high-performance organic field-effect transistor memory elements and their flexible devices in the big data era. The performance of memory devices with many linear polymers based on polystyrene or polyimide or their derivatives as electret are not excellent enough. On the other hand, these polymer electrets exhibit an unsatisfactory thermal stability and/or multi-step synthesis. Moreover, the relationships between the molecular structure of polymer electret and the performance of transistor memory and the operation mechanism are not quite so clear owing to lack of comprehensive study. Based on previous studies and our early work, this project aims to develop solution processible and pi-conjugation-interrupted porous organic polymer electrets with excellent thermal stability via concise metal-free catalytic friedel-crafts crosslinking polymerization for transistor memory elements. The memory characteristics can be effectively tuned by the porous structure of polymer electret, which is also beneficial to improve the mechanical stability of the flexible memory devices based on the corresponding polymer composite electrets. The electronic energy levels of the polymer electrets can be tuned via p-n energy band tuning theory and other electronic donors or acceptors can be introduced into the porous structure. The effect of the field-induced intramolecular or intermolecular electron transfer on the memory characteristics will be also investigated. Furthermore, this project also aims to uncover the relationships between the molecular structure of polymer electret and the performance of transistor memory and the operation mechanism. This project will hopefully not only provide new ideas for designing high-performance polymer electrets, but also offer effective technical support for their industrial applications in the future.

英文关键词： porous polymer;electret;Fridel-Crafts reaction;organic field-effect transistor ;memory