报告题目：Color Pigment derived Organic Semiconductors  

报 告 人：Prof. Frank Würthner  (德国国家科学院院士)

邀 请  人：马於光 教授

报告时间：2019年10月14日（星期一）下午15:00

报告地点：北区科技园1号楼发光国家重点实验室N308A会议室

报告摘要：

In recent years we could witness a shift of paradigm in organic semiconductor research towards dyes and color pigments. Thus, after two decades of research focused on conjugated polymers and oligothiophene as well as acene based organic semiconductor molecules most recent work in several laboratories demonstrated high charge carrier mobilities > 1 cm2V-1s-1 for various classes of dyes and pigments. These results are remarkable owing to the presence of dipolar functional groups in these compounds which was believed to result in large reorganization energies and bad transport properties. Obviously this view needs to be reassessed. In particular for organic photovoltaics the success of several low band gap conjugated oligomers and polymers (containing dipolar functional groups) as well as small molecule based organic colorants appears highly promising.

In this lecture I will give an overview on our work on n-type organic semiconductors based on naphthalene and perylene bisimides and p-type organic semiconductors based on merocyanines, squaraines and diketopyrrolopyrroles. A particular focus will be given on the most unusual highly dipolar merocyanine dyes which exhibit outstanding performance in bulk heterojunction solar cells with PCE > 6%. Our recent demonstration of hole mobilities up to 1.3 cm2V-1s-1 in organic thin film devices and up to 8.6 cm2V-1s-1 in organic single crystals clearly corroborates the view that the presence of dipolar groups does not imply bad transport properties. Dyes and colorants are accordingly very versatile for organic electronics and organic photovoltaics.

个人简介(详细个人简历见附件)：

Frank Würthner在斯图加特大学接受化学教育（1994年博士学位），并在麻省理工学院剑桥/马萨诸塞州（美国）进行博士后研究。在巴斯夫工作了两年，在乌尔姆大学工作了五年（2001年为适应训练），他于2002年成为维尔茨堡大学有机化学的主任教授。他曾任有机化学研究所所长、化学系主任和纳米系统化学中心创始主任。他的主要研究方向包括π共轭分子和功能染料的合成，它们在有机电子学、光子学和光电学中的应用，π支架构成的复杂超分子结构的构建，自组装过程的机械解释，以及染料基纳米系统中光诱导过程的研究。他发表了400多篇论文，自2014年以来定期被列为过去十年中被高度引用的化学家之一。他是德国国家科学院利奥波迪纳和巴伐利亚科学院的当选院士，也是皇家化学学会的院士。他的奖项包括巴伐利亚科学院的阿诺德索默菲尔德奖（2002年）、西班牙皇家学会的埃尔胡亚尔戈德施密特奖（2016年）和中央研究院的周大树讲师奖（2018年）。自2016年起，他担任《有机化学前沿》的副主编。2019年起任华南理工大学客座教授。

Frank Würthner received his education in Chemistry at the University of Stuttgart (doctoral degree 1994) and carried out postdoctoral research at MIT in Cambridge/MA (USA). After two years at BASF and five years at the University of Ulm (Habilitation in 2001) he became chair professor of Organic Chemistry at the University of Würzburg in 2002. Here he has served as head of the Institute of Organic Chemistry, dean of the Chemistry Department and founding director of the Center for Nanosystems Chemistry. His main research interests include the synthesis of pi-conjugated molecules and functional dyes, their application in organic electronics, photonics and photovoltaics, the construction of complex supramolecular architectures composed of pi-scaffolds, the mechanistic elucidation of self-assembly processes, and the investigation of light-induced processes in dye-based nanosystems. He has published more than 400 papers and is listed since 2014 regularly among the highly cited chemists of the last decade. He is an elected member of the German National Academy of Science Leopoldina and the Bavarian Academy of Sciences, as well as a Fellow of the Royal Society of Chemistry. His awards include the Arnold-Sommerfeld-Prize of the Bavarian Academy of Science (2002), the Elhuyar-Goldschmidt Award of the Royal Society of Spain (2016) and the Ta-Shue Chou Lectureship Award of Academia Sinica (2018). Since 2016 he is Associate Editor or Organic Chemistry Frontiers.