Lateral Electron and Hole Hopping between Dyes on Mesoporous ZrO₂: Unexpected Influence of Solvents with a Low Dielectric Constant.

ABSTRACT: Lateral intermolecular charge transfer between photosensitizers on metal oxide substrates is important for the understanding on the overall working principles of dye-sensitized systems. Such studies usually concentrate on either hole or electron transfer separately and are conducted in solvents with a high dielectric constant (ε_s) that are known, however, to show a drastic decrease of the local dielectric constant close to the metal oxide surface. In the present study, both hole and electron hopping between organic donor-acceptor photosensitizers was experimentally investigated on PB6 dye-sensitized mesoporous ZrO₂ films. The donor (close to the surface) and acceptor (away from surface) subunit of the PB6 dye were observed to be involved in hole and electron ho

SUBMITTER: Wrede S 

PROVIDER: S-EPMC10236494 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature