报告题目：Tuning Structure and Ordering in Organic Semiconductor Frameworks 

报告人：Yi liu
    The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, USA

时间：2016年9月22日上午10:30

地点：蒙民伟楼201

ABSTRACT 

Organic semiconductors with tunable optoelectronic properties represent a versatile class of multifunctional materials that can find usages in flexible electronics and energy-related applications. Some fundamental aspects related to their optoelectronic properties are the control of molecular packing, long range ordering, as well as donor-acceptor interfaces, all of which are essential for charge separation and charge transport. Our two-prong approaches toward the development of high performance semiconductor materials include (a) developing electroactive building blocks that satisfy bandgap engineering, high absorptivity, and strong intermolecular interactions, and (b) building network structures to facilitate charge transport. In this talk I will describe our recent advances on the development of new electron donors and acceptors and their incorporation in conjugated polymers, as well as network materials based on covalent organic frameworks and quantum dots-semiconductor composite films. The combination of molecular level understanding of material composition and control of thin film ordering offer great opportunity for the development of novel high performance electronic materials.