表面分子手性识别与组装结构的STM研究

Recent progress of chiral assembly on solid surface investigated by scanning tunneling microscopy

表面手性现象是物理化学科学研究的重要内容之一,研究表面手性现象,将有助于对分子吸附,分子间相互作用,多相手性催化,手性分离与拆分等科学和实际应用问题的深入理解.在表面手性现象和手性结构的研究中,扫描隧道显微技术(STM)发挥着重要作用,成为研究表面手性现象的重要手段.该综述文章以本课题组近年已发表的研究工作为主,重点介绍利用STM研究固体表面分子吸附组装体系中关于手性问题的部分结果,包括固有手性分子在固体表面的吸附,非手性分子组装形成手性结构,以及表面手性结构的转化和调控.还结合实验结果分析探讨了表面手性的结构形成、放大和传递等,展望了该研究领域的发展趋势.

Understanding surface chirality is significant in the fundamental study of physical chemistry and industrial application such as enantio-selective heterogeneous catalysis. As a powerful surface analysis technique, scanning tunneling microscope （STM） plays an important role in the investigation of surface chirality. This review paper based mainly on the research works reported by our group in these years, with emphasis on the adsorption of chiral molecules, the formation of chiral assembly with prochiral and achiral molecules, and the transition of chiral structure. On the basis of these experimental results, the formation, amplification, as well as the transition of surface chirality is explored. Finally, the prospects of future development in this exciting field are outlined.