Bifurcation of excited state trajectories toward energy transfer or electron transfer directed by wave function symmetry.

ABSTRACT: This work explores the concept that differential wave function overlap between excited states can be engineered within a molecular chromophore. The aim is to control excited state wave function symmetries, so that symmetry matches or mismatches result in differential orbital overlap and define low-energy trajectories or kinetic barriers within the excited state surface, that drive excited state population toward different reaction pathways. Two donor-acceptor assemblies were explored, where visible light absorption prepares excited states of different wave function symmetry. These states could be resolved using transient absorption spectroscopy, thanks to wave function symmetry-specific photoinduced optical transitions. One of these excited states undergoes energy transfer to the acceptor,

SUBMITTER: Oviedo PS 

PROVIDER: S-EPMC7848744 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature