All-Red-Light Photoswitching of Indirubin Controlled by Supramolecular Interactions,Journal of the American Chemical Society

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All-Red-Light Photoswitching of Indirubin Controlled by Supramolecular Interactions
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2021-10-19 , DOI: 10.1021/jacs.1c08206
Stefan Thumser ₁ , Laura Köttner ₁ , Nadine Hoffmann ₂ , Peter Mayer ₂ , Henry Dube ₁

Affiliation

Red-light responsiveness of photoswitches is a highly desired property for many important application areas such as biology or material sciences. The main approach to elicit this property uses strategic substitution of long-known photoswitch motives such as azobenzenes or diarylethenes. Only very few photoswitches possess inherent red-light absorption of their core chromophore structures. Here, we present a strategy to convert the long-known purple indirubin dye into a prolific red-light-responsive photoswitch. In a supramolecular approach, its photochromism can be changed from a negative to a positive one, while at the same time, significantly higher yields of the metastable E-isomer are obtained upon irradiation. E- to Z-photoisomerization can then also be induced by red light of longer wavelengths. Indirubin therefore represents a unique example of reversible photoswitching using entirely red light for both switching directions.

中文翻译：

超分子相互作用控制靛玉红的全红光光开关

光开关的红光响应性是许多重要应用领域（如生物学或材料科学）非常需要的特性。引发这种特性的主要方法是使用战略性替代已知的光开关动机，例如偶氮苯或二芳基乙烯。只有极少数光开关具有其核心发色团结构的固有红光吸收。在这里，我们提出了一种将久负盛名的紫色靛玉红染料转化为多产的红光响应光开关的策略。在超分子方法中，它的光致变色可以从负变为正，同时在辐照下获得显着更高产率的亚稳态E异构体。E - 到Z然后也可以通过较长波长的红光诱导光异构化。因此靛玉红代表了一个独特的可逆光开关例子，它在两个开关方向上都使用完全红光。

更新日期：2021-11-03

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