含硒表界面化学

Selenium-containing Surface/interface Chemistry

硒是人体必需的一种微量元素,本课题组近年的研究表明含硒化学键具有诸多独特的化学性质.二硒键具有氧化还原双重响应性,同时是一类光响应的动态共价键,能够在可见光辐照下发生可逆的交换反应.将含硒化学键这些独特的性质与表界面化学相结合可以赋予体系独特的响应行为.本文综合评述了本课题组近年来在含硒表界面化学领域的研究进展:采用单分子力谱揭示了含硒化学键相互作用的力学规律;通过表界面化学实现了二硒键动态平衡的调控;基于二硒键氧化还原及可见光响应性实现了表界面可逆修饰、二维材料功能化及层层组装膜材料的制备,在生物医用、液体输运等领域具有潜在应用价值.

Selenium is an essential element to human body.Our research group has recently revealed many unique features of selenium-containing bonds.For instance,diselenide bond has dual redox response,and it is also a type of dynamic bond which can undergo exchange reaction under visible light irradiation.Combing those interesting properties of selenium-containing bonds with surface/interface chemistry can endow system with unique responsive behaviors.This article reviews the recent progresses we made in the field of seleniumcontaining surface/interface chemistry.We used single molecule force spectroscopy to study the nature of selenium-containing bonds in the force point of view,and used interface chemistry to modulate the equilibrium of diselenide dynamic exchange reaction.Additionally,we achieved reversible surface modification,twodimensional material functionalization and layer-by-layer nanocomposite film fabrication based on the redox and light response of diselenide bond,which may find potential applications in fields like biomedical research and liquid transfer.