Josef Verena, Hampel Frank, Dube Henry
Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany.
Angew Chem Int Ed Engl. 2022 Oct 24;61(43):e202210855. doi: 10.1002/anie.202210855. Epub 2022 Sep 21.
A survey of heterocyclic hemithioindigo photoswitches is presented identifying a number of structural motives with outstanding property profiles. The highly sought-after combination of pronounced color change, quantitative switching in both directions, exceptional high quantum yields, and tunable high thermal stability of metastable states can be realized with 4-imidazole, 2-pyrrole, and 3-indole-based derivatives. In the former, an unusual preorganization using isomer selective chalcogen- and hydrogen bonding allows to precisely control geometry changes and tautomerism upon switching. Heterocyclic hemithioindigos thus represent highly promising photoswitches with advanced capabilities that will be of great value to anyone interested in establishing defined and reversible control at the molecular level.
本文介绍了对杂环半硫靛光开关的一项研究，确定了一些具有出色性能的结构动机。基于4-咪唑、2-吡咯和3-吲哚的衍生物可以实现备受追捧的显著颜色变化、双向定量切换、极高的量子产率以及亚稳态的可调高热稳定性的组合。在前者中，使用异构体选择性硫属元素键和氢键的异常预组织能够在切换时精确控制几何形状变化和互变异构。因此，杂环半硫靛代表了具有先进功能的极有前景的光开关，对于任何有兴趣在分子水平上建立明确且可逆控制的人来说都将具有巨大价值。
