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在dithienylethene-strapped calix[4]pyrrole中化物结合亲和力和选择性的光交换

David Villarón¹, Guido E A Brugman¹, Maxime A Siegler²

¹Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands. s.j.wezenberg@lic.leidenuniv.nl.

Chemical communications (Cambridge, England)

|June 22, 2023

概括

可光切换的二乙烯乙烯带[4]醇改变了离子结合的亲和力. 光诱导的异构化改变了对较大的化离子 (如化和化) 的结合选择性.

科学领域:

超分子化学超分子化学
摄影化学的使用.
离子识别离子识别

背景情况:

卡利克斯[4]醇衍生物是已知的离子结合.
乙乙烯单元可以经历可逆光异构化.

研究的目的:

为了研究光异构化对二乙烯带[4]pyrrole.pyrrole的离子结合特性的影响.
确定结合点大小的变化如何影响不同化离子的选择性.

主要方法:

合成乙烯带[4]pyrrole.role 的合成.
使用300/630nm光的光异构化.
对阳离子结合亲和度的测量 (例如,定位,ITC).

主要成果:

该分子存在于光辐射后的环开和环闭同体.
异构化显著改变了离子结合口袋的大小.
结合化物的结合亲和力显示了轻微的变化,而化物和化物亲和力受到很大影响.
对化离子的选择性是由光异构化状态调节的.

结论:

甲基乙烯带[4]pyrrole作为一个可光切换的阴离子受体.
该系统显示基于光刺激的化离子可调节的选择性.
这项工作突出了光响应性超分子系统在感知和分离方面的潜力.

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