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通过可逆封装来控制光的超分子控制

Henry Dube¹, Mark R Ams, Julius Rebek

¹Department of Chemistry, Allegheny College, 520 North Main Street, Meadville, Pennsylvania 16335-3902, USA.

Journal of the American Chemical Society

|July 9, 2010

概括

这项研究表明,使用光和热反应敏的亚博烯,可以实现可逆的超分子开关. 这使得精确控制客分子封装,作为光开/关系统的功能.

科学领域:

超分子化学超分子化学
摄影化学的使用.
分子开关分子开关

背景情况:

在光或热刺激下,4,4'-二甲基二经历了跨异体化.
这种异构化改变了分子结合特性,使得对客体封装的控制成为可能.
这种现象可以用来开发响应性分子系统.

研究的目的:

调查光和热诱导的亚博同质化用于可逆封装的远程控制的使用.
建立基于受控封装的超分子光开启/关闭开关.
为了将光变化与客分子的封装状态相关联.

主要方法:

使用光和热触发的4,4'-二甲基二的trans到cis同质化.
使用trans-4-ethyl-4'-methylstilbene作为一个光客分子.
将光谱与质子核磁共振 (1H NMR) 数据相对应,以确认封装状态.

主要成果:

通过使用亚博烯异构化证明了对转-4-乙基-4'-甲基stilbene的封装的远程控制.
观察到 stilbene 客人在封装时与在溶液中自由时的光变化.
通过光谱分析证实了封装状态和光调制之间的直接关系.

结论:

亚博的跨异体化提供了一种可行的机制,用于对客体封装进行可逆控制.
这个系统有效地作为一个超分子光开关.
光和NMR光谱的结合对于验证受控封装过程至关重要.

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