报告题目:Design of porous materials with local flexibility
报告人:顾 成 研究员
邀请人:安众福 教 授
报告时间:4月24日(星期三)10:00
报告地点:科技创新大楼C501室
Abstract
Design of the gas-diffusion process in a porous material is challenging because a contracted pore aperture is a prerequisite, while the channel traffic of guest molecules is regulated by the flexible and dynamic motions of nanochannels.[1-3]Herein, we present rational design of a diffusion-regulatory system in a porous coordination polymer (PCP) in which flip–flop molecular motions within the framework structure provide kinetic gate functions enabling efficient gas separation and storage.[4]The PCP shows significant temperature-responsive adsorption in which the adsorbate molecules are differentiated by each gate-admission temperature, facilitating kinetics-based gas separations of oxygen/argon and ethylene/ethane with high selectivities of ~350 and ~75, respectively. Additionally, we demonstrate the long-lasting physical encapsulation of ethylene at ambient conditions, owing to strongly impeded diffusion in distinctive nanochannels.
Figure1Schematic representation of diffusion-regulatory pore systems.
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个人简介
顾成,研究员、博士生导师。2007年毕业于吉林大学化学学院,获理学学士学位,2012年获吉林大学高分子化学与物理博士学位。2013年4月至2016年6月在日本分子科学研究所从事博士后研究并入选日本学术振兴会(JSPS)特别研究员,2016年7月至2017年10月在日本京都大学细胞-物质科学统合研究所继续博士后研究,2017年11月入职华南理工大学。主要从事有机多孔材料基础与应用研究,重点围绕“有机多孔材料的结构设计-加工方法-光电应用”,发展了多种新概念多孔材料体系、主客体相互作用新认知、多孔材料溶液加工新方法。重要学术贡献包括:(1)提出“局域柔性”概念,通过在刚性MOF骨架上引入“局域柔性”,即微扰,来控制气体的扩散,实现较高温度下的高效气体分离;(2)提出多孔有机薄膜的可控制备方法,解决了多孔有机材料难成膜的问题,发展了高性能有机多孔薄膜材料,拓展了多孔材料的应用前景;(3)提出具有普适意义的有机半导体交联薄膜可控制备新方法,实现了交联度的可控性及交联位点的高度选择性,将电化学聚合薄膜的应用拓展到光电领域;(4)通过控制有机多孔材料的层间作用力,直接合成了可以溶解的有机多孔材料,并进一步实现其高性能光电器件。以第一/通讯作者在Science,Adv. Mater.,Angew. Chem. Int. Ed.等杂志发表论文17篇,所有论文共发表45篇,他引1700余次,H-因子25。