以有机分子为基本单元，通过金属-有机配位作用、动态共价键、氢键等自组装形成有机框架结构材料是近年来化学和材料科学最具活力的研究领域之一。卤键是一种与氢键类似的分子间弱相互作用，具有高度的方向性，丰富的成键形式，以及与氢键相当甚至高于氢键的强度，但是到目前为止，卤键在有机框架结构中的应用还还未见报道，究其原因，主要是对分子间卤键的基本性质及作用规律缺乏了解。本项目拟以高分辨扫描探针显微镜为主要研究手段，结合理论计算方法，系统研究表面吸附分子间卤键的基本性质和形成规律，从原子/分子水平揭示卤键与氢键等其它弱相互作用的协同效应，以及卤键对分子组装结构的调控作用，发展有效的基于卤键的表面分子可控组装策略，在此基础上，通过对分子的合理设计，构建以有机分子为结构基元，以分子间卤键为连接点的二维超分子有机框架结构并探索其应用。

Organic frameworks，which built from organic molecules via metal-organic coordination, dynamic covalent bond, or hydrogen bond, is one of the most extensively investigated structures in recent years. As an analogue of hydrogen bond, halogen bond possesses similar properties with hydrogen bond, like high directionality, flexible bonding forms, and high strength. It is supposed that halogen bond should be a good driving force for the fabrication of supramolecular organic frameworks. This project aims to enclose the strength, directionality, and specificity of halogen bond between adsorbed molecules and reveal the interplay of halogen bond with hydrogen bond and other kind of weak interactions. On this basis, develop controlled molecular assembly strategy based on halogen bonds, and then fabricate 2D halogen-bonded supramolecular frameworks and explore their application in molecular recognition.