Triplet sensitization enables bidirectional isomerization of diazocine with 130 nm redshift in excitation wavelengths.

ABSTRACT: Diazocines are bridged azobenzenes with phenyl rings connected by a CH₂-CH₂ group. Despite this rather small structural difference, diazocine exhibits improved properties over azobenzene as a photoswitch and most importantly, its Z configuration is more stable than the E isomer. Herein, we reveal yet another unique feature of this emerging class of photoswitches. In striking contrast to azobenzenes and other photochromes, diazocine can be selectively switched in E → Z direction and most intriguingly from its thermodynamically stable Z to metastable E isomer upon successive excitation of two different triplet sensitizers present in solution at the same time. This approach leads to extraordinary large redshift of excitation wave

SUBMITTER: Isokuortti J 

PROVIDER: S-EPMC10466275 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature