Structural and solvent modulation of symmetry-breaking charge-transfer pathways in molecular triads.

ABSTRACT: Whereas the photoinduced charge-transfer properties of electron donor-acceptor dyads are now well understood, those of symmetric conjugated architectures containing several identical donor-acceptor branches have started to be scrutinised much more recently. Here, we report on our investigation of the charge-transfer dynamics of a series of formally centrosymmetric triads consisting of a quadrupolar dihydropyrrolopyrrole core substituted with two identical diphenylethynyl lateral branches. Using a combination of time-resolved electronic and vibrational spectroscopies, we show that these molecules exhibit rich excited-state dynamics, which includes three different types of symmetry-breaking charge-transfer processes depending on the nature of the end substituents on the core and branches as

SUBMITTER: Govind C 

PROVIDER: S-EPMC11445701 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature