Energy migration, charge transfer, and charge dissociation in self-assembling nonfullerene acceptor aggregates with zincporphyrin-nonfullerene acceptor dyads.

ABSTRACT: The synergy between self-assembling donor-acceptor-donor type nonfullerene acceptors (TACIC-Br) and zincporphyrin-nonfullerene acceptor linked molecules (ZnP-TACIC) provides a compelling model for examining key multi-step processes, including energy migration, charge transfer (CT), and charge dissociation (CD) in photosynthesis and organic photovoltaics (OPVs). Remarkably, TACIC-Br molecules exhibited a strong tendency to aggregate, even in the good solvent CHCl₃. However, when the proportion of the poor solvent (MeOH) exceeded 40% in a CHCl₃/MeOH mixture (v/v), these aggregates displayed an unusually prolonged excited singlet-state lifetime, comparable to TACICs in thin films. Solid-state NMR spectroscopy and theoretical calculations revealed that within the TACIC ag

SUBMITTER: Tamai Y 

PROVIDER: S-EPMC12305467 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature