Competitive Charge Separation Pathways in a Flexible Molecular Folda-Dimer.

ABSTRACT: We report the photophysical properties of a molecular folda-dimer system PDI-AnEt₂-PDI, where the electron-donating N,N-diethylaniline (AnEt₂) moiety bridges two electron-accepting perylene diimide (PDI) chromophores. The conformationally flexible PDI-AnEt₂-PDI adopts either an open (two PDIs far apart) or folded (two PDIs within π-stacking distance) conformation, depending on the solvent environment. We characterized the photoinduced charge separation dynamics of both open and folded forms in solvents of varying polarity. The open form undergoes charge separation to give PDI^•--AnEt₂^•+-PDI (Bridge electron transfer) independent of solvent polarity. The folded for

SUBMITTER: Thakur K 

PROVIDER: S-EPMC10895663 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature