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Sensitization of ultra-long-range excited-state electron transfer by energy transfer in a polymerized film.

ABSTRACT: Distance-dependent energy transfer occurs from the Metal-to-Ligand Charge Transfer (MLCT) excited state Ru(bpy)3(2+*) to an anthracene-acrylate derivative (Acr-An) incorporated into the polymer network of a semirigid poly(ethyleneglycol)dimethacrylate monolith. Following excitation, Ru(bpy)3(2+*) to Acr-An triplet energy transfer occurs followed by long-range, Acr-(3)An-Acr-An ? Acr-An-Acr-(3)An, energy migration. With methyl viologen dication (MV(2+)) added as a trap, Acr-(3)An + MV(2+) ? Acr-An(+) + MV(+) electron transfer results in sensitized electron transfer quenching over a distance of approximately 90 Å.

SUBMITTER: Ito A

PROVIDER: S-EPMC3458388 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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Sensitization of ultra-long-range excited-state electron transfer by energy transfer in a polymerized film.

Ito Akitaka A Stewart David J DJ Fang Zhen Z Brennaman M Kyle MK Meyer Thomas J TJ

Proceedings of the National Academy of Sciences of the United States of America 20120904 38

Distance-dependent energy transfer occurs from the Metal-to-Ligand Charge Transfer (MLCT) excited state Ru(bpy)3(2+*) to an anthracene-acrylate derivative (Acr-An) incorporated into the polymer network of a semirigid poly(ethyleneglycol)dimethacrylate monolith. Following excitation, Ru(bpy)3(2+*) to Acr-An triplet energy transfer occurs followed by long-range, Acr-(3)An-Acr-An → Acr-An-Acr-(3)An, energy migration. With methyl viologen dication (MV(2+)) added as a trap, Acr-(3)An + MV(2+) → Acr-A ...[more]

PMID: 22949698

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