Charge and Spin Transfer Dynamics in a Weakly Coupled Porphyrin Dimer.

ABSTRACT: The dynamics of electron and spin transfer in the radical cation and photogenerated triplet states of a tetramethylbiphenyl-linked zinc-porphyrin dimer were investigated, so as to test the relevant parameters for the design of a single-molecule spin valve and the creation of a novel platform for the photogeneration of high-multiplicity spin states. We used a combination of multiple techniques, including variable-temperature continuous wave EPR, pulsed proton electron-nuclear double resonance (ENDOR), transient EPR, and optical spectroscopy. The conclusions are further supported by density functional theory (DFT) calculations and comparison to reference compounds. The low-temperature cw-EPR and room-temperature near-IR spectra of the dimer monocation demonstrate that the radical cation is s

SUBMITTER: Kopp SM 

PROVIDER: S-EPMC11311228 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature