报告题目：From Molecules to Polymers: Insights on Molecular Packing, Conformation, and Dynamics from Solid-State NMR
报告人：Michael Ryan Hansen 教授（德国明斯特大学）
邀请人：软物质研究院
报告时间：2018年11月12日（星期一）下午14:45
报告地点：软物质研究院324报告厅（北区科技园2号楼）
欢迎广大师生踊跃参加。
华南软物质科学与技术高等研究院
2018年11月08日
报告内容简介：
Molecules and polymers with extended π-conjugation, such as low-band-gap π-conjugatedpolymers and disc-shaped aromatic molecules, have the potential to serve as efficient organicsemiconductors in various electronic devices. A common feature shared by both of thesematerial classes is that their specific function is established via solution processing, resultingin active materials that are semi crystalline, which lack long-range ordering. This prevents thedirect access to details about the molecular organization from a conventional approach.
In my talk I will outline a general strategy for determining the molecular packing of
molecules and polymers with extended π-conjugation that combines X-ray diffraction and solid state NMR experiments with quantum-chemical calculations of Nucleus Independent ChemicalShift (NICS) maps.1,2This combination provides a useful platform to assess specific packingmotifs, which in some cases even allow setting up a crystal structure provided that sufficientconstraints can be derived from experiments. The potential of the proposed strategy will beexemplified by recent work on poly-3-alkyl-thiophenes (P3ATs),3,4donor-acceptor-typepolymers,5-7and shape-persistent macrocycles, forming empty helical nanochannels.8Finally,I will illustrate how site-specific information about molecular dynamics determined from solidstate NMR experiments can be used to elucidate structure and complex motions in discoticliquid crystals.9,10
报告人简介：
Michael Ryan Hansen，博士，德国明斯特大学(Westfälische Wilhelms-Universität Münster) 物理化学研究所教授。2006年毕业于丹麦奥胡斯大学(Aarhus University)，获博士学位，主要利用固体NMR技术和DFT第一性原理计算研究多相催化和无机材料体系。2007年，加入德国马普所（Max Planck Institute for Polymer Research）Hans Spiess的课题组从事博士后研究。2010年成为独立PI在马普所从事研究工作，主要围绕有机超分子体系展开。在2013-2015年期间，受丹麦Villum基金会青年研究员基金的支持，在奥胡斯大学任助理教授。2015年6月，回到德国明斯特大学物理化学研究所任教授。目前研究方向主要集中在软物质及能源相关的材料上，并用固体NMR技术阐明这些体系的纳米自组装结构和分子动力学。
