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王朝晖教授学术报告(4月16日,化西210,下午16:00)
来源: 作者: 更新时间:2019-04-12

报告题目:Nano-Carbon Imides:Precise Synthesis and Application

报告人:王朝晖教授(清华大学化学系)

时间:2019年4月16日(星期二)16:00-17:30

地点:化西210会议室

报告摘要:

Nano-carbon imides, especially extended rylene imides are attracting ever-increasing academic attention with aiming at seeking desirable functionality for various optoelectronic devices. The readily derivative nano-carbon skeleton combining easily modifiable imide chains results in a variety of robust materials with intense absorbance and fluorescence, well-tunable energy level, and molecular configuration. Up to now, there are a pool of successful applications based on nano-carbon scaffolding to provide compelling targets serving as n-type semiconductors in OFETs and OSCs.

We have been focusing on the precise synthesis of nano-carbon imides, often called as multichromophoric rylene arrays, as promising n-type semiconductors in optoelectronic applications. Two kinds of conjugated C3-symmetric perylene dyes, namely triperylene hexaimides (TPH) and selenium-annulated triperylene hexaimides (TPH-Se), will be highlighted. Single-crystal X-ray diffraction studies show that TPH displays an extremely twisted three-bladed propeller configuration and a unique 3D network assembly in which three PBI subunits in one TPH molecule have strong π-π intermolecular interactions with PBI subunits in neighbouring molecules. TPH and TPH-Se acceptors-based solar cells show high power conversion efficiency >10%, which mainly results from the combined properties of broad and strong absorption ability, appropriate LUMO level, desirable aggregation, high electron mobility and good film morphology with the polymer donor.

Quite recently, the novel nonplanar graphenoid structure, corannurylene pen-tapetalae, has also been synthesized via hybridization of five PDI fragments around a corannulene core. Transistor devices demonstrate that, without any π-π stacking, the honeycomb lattice could also facilitate electron transport. The unique example of hybrid graphenoid with a honeycomb crystal lattice expands the scope of complex supramolecular architectures, piquing interest in applications in organic electronics.

报告人简介:

王朝晖,清华大学化学系教授,博士生导师。2005年入选中国科学院“百人计划”,2010年“百人计划”终期评估优秀,2012年获国家杰出青年基金,2014年获中国化学会-巴斯夫公司青年知识创新奖,2017年入选万人计划科技创新领军人才。长期从事新型共轭分子的设计、合成和可控组装以及分子器件的研究工作,在复杂结构有机功能分子的高效合成和半导体性能研究方面做出了重要贡献。作为首席科学家承担国家重点研发计划纳米科技专项,作为项目负责人先后承担国家自然科学基金重点项目、中国科学院先导B项目子课题、科技部国家重大研究计划子课题等10项。作为研究骨干参加基金委创新群体、基金委重大项目、基金委中德重大国际合作项目以及科技部973项目等10余项。

王朝晖迄今在国际学术刊物上发表SCI收录论文170余篇,其中在《自然综述材料》(Nat. Rev. Mater.),《化学研究评述》(Acc. Chem. Res.)《美国化学会志》(J. Am. Chem. Soc.),《德国应用化学》(Angew. Chem. Int. Ed.)等国际权威期刊上发表论文30余篇,并多次被作为研究亮点以及封面文章报道。在国际和国内学术会议上做邀请报告100多次。

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