A cross-conjugation approach for high-performance diaryl-hemithioindigo photoswitches.

ABSTRACT: Diaryl-hemithioindigos (diaryl-HTIs) are derivatives of a novel class of highly functionalized indigoid chromophores. In this work a systematic study of the electronic effects on their photoswitching reveals the design principles for achieving an excellent property profile. Two key elements need to be invoked for perfect diaryl-HTI performance, first introduction of strong electron donors and second establishment of cross-conjugation. The resulting photoswitches combine high thermal stability, large extinction coefficients, red-light responsiveness, pronounced photochromism, and strong isomer accumulation in the photostationary states with precise geometry changes. By using the inherent basicity of their strong electron donor moiety, diaryl-HTIs can be rendered into very potent tools for m

SUBMITTER: Zitzmann M 

PROVIDER: S-EPMC10231315 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature