High Performance Polymer Materials: Synthesis, Optoelectric and Solar Energy Applications
Prof. Der-Jang Liaw
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
Abstract: Advanced polymeric materials including triarylamine-containing conjugated polymers, polyimides, polyamides and polynorbornenes were prepared for optoelectronic and energy applications. Polynorbornenes with self-assembly amphiphilic architecture containing hydrophilic ammonium salt and hydrophobic alkyl ester group were obtained by ring-opening metathesis polymerization (ROMP). Polyimides were prepared via polycondensation, which could be used as alignment films. Colorless-to-colorful electrochromic polyimides with very high contrast ratio were prepared from non-coplanar based diamine and alicyclic dianhydride, which exhibited fast response speed and high contrast ratio. In addition, triarylamine-based conjugated polymers and polynorbornenes were deposited on flexible monolayer graphene-based electrode for electrochromism. Both polymers showed high thermal stability up to 300 oC.
A novel concept of an electrode buffer layer material, exhibiting either hole transporting or reducing electrode work function (WF) properties, was demonstrated by the example of a polymeric compound PDTON. Depending on the composition ratio of acetic acid and ethyl acetate upon dispersing, PDTON formed two kinds of nanospheres, serving as building blocks and defining the morphology and properties of the respective materials, termed as A-PDTON and C-PDTON. These materials were suitable for hole transport (triphenylamine on the surface of A-PDTON nanospheres) and reducing the WF of an electrode due to the formation of a suitable interfacial dipole (C-PDTON), respectively. A-PDTON could be used as an ABL and C-PDTON as a CBL in the model OSCs, OLEDs, and PSCs, resulting in a comparable or even superior performance compared to the standard devices.
廖德章 台湾科技大学化学系讲座教授、俄罗斯科学院院士（2012年）。主要研究领域为高分子新材料合成、精密聚合新技术在高科技产业的应用研究，迄今为止已发表SCI论文近400篇，应邀撰写专业书籍及辞典和教科书共14本。High Performance Polym.主编，Polymer、Polymer J.、Polymer International、J. Polym. Res.、Materials、Soft NanoscienceLett.编委。2009年与UC Berkeley的J.M.J. Frechet以及马普所的K. Murllen教授共同荣获日本高分子学会国际赏，2012年获高分子学会杰出高分子学术研究奖，2013年获高分子学会终身成就奖。