Tailoring the optical and dynamic properties of iminothioindoxyl photoswitches through acidochromism.

ABSTRACT: Multi-responsive functional molecules are key for obtaining user-defined control of the properties and functions of chemical and biological systems. In this respect, pH-responsive photochromes, whose switching can be directed with light and acid-base equilibria, have emerged as highly attractive molecular units. The challenge in their design comes from the need to accommodate application-defined boundary conditions for both light- and protonation-responsivity. Here we combine time-resolved spectroscopic studies, on time scales ranging from femtoseconds to seconds, with density functional theory (DFT) calculations to elucidate and apply the acidochromism of a recently designed iminothioindoxyl (ITI) photoswitch. We show that protonation of the thermally stable Z isomer leads to a str

SUBMITTER: Medved' M 

PROVIDER: S-EPMC8179557 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature