Distance dependence of photoinduced electron transfer through non-conjugated bridges

Hush, Noel S.; Paddon‐Row, Michael N.; Cotsaris, E.; Oevering, Henk; Verhoeven, J. W.; Heppener, Marc

doi:10.1016/0009-2614(85)80394-8

Cited by 148 publications

(45 citation statements)

References 23 publications

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“…Hush et al [33] have also used systems with fixed geometry and therefore relatively well known mutual orientation and separation of the donor and acceptor. They linked the donor and acceptor together by rigid fused norbornyl bridges.…”

Section: Introductionmentioning

confidence: 98%

Electron transfer reactions dynamically coupled to a dielectric medium: Orientational effects and bridge assistance

Mikkelsen

Ratner

1987

Int. J. Quantum Chem.

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A new treatment for studying electron transfer reactions is considered. The treatment allows for a detailed description of the electronic structure and is therefore appropriate for a complete description of weakly interacting electron transfer reactions. The initial state for the electron transfer system is selected by a variational scheme. The electron transfer is pictured to take place in an encounter complex consisting of the donor, the acceptor, and (optionally) a solvenubridge molecule. The electronic structure of the encounter complex is dynamically coupled to the surrounding solvent, and the direct time evolution of the electron transfer system is followed by a nonlinear time-dependent Hartree-Fock method. We present examples with benzeneanion radical as the donor, pyridine as the acceptor, and water as the bridgekolvent molecule. The general formalism appears to be a useful approach for studying electron transfer reactions in solution.

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Section: Introductionmentioning

confidence: 98%

Electron transfer reactions dynamically coupled to a dielectric medium: Orientational effects and bridge assistance

Mikkelsen

Ratner

1987

Int. J. Quantum Chem.

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“…Over the past four decades, rigid, covalently linked donor-bridge-acceptor (DBA) molecules, in which the donor and acceptor chromophores are held at well-defined separations and orientations with respect to each other, have been successfully used to explore the dependence of electron transfer dynamics on a variety of factors [1] including interchromophore distance [2] and orientation [3], bridge configuration [4] and orbital symmetry [5]. These studies have revealed that the electronic interaction between the donor (reductant) group and the acceptor (oxidant) group is controlled by the covalent linkages in the molecules.…”

Section: Introductionmentioning

confidence: 99%

Pendant unit effect on electron tunneling in U-shaped molecules

et al. 2006

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“…-17-acceptor concentration and electron affinity, this class of systems exhibits several of the properties needed for a practical frequency-domain optical sturage medium, and provides an impetus for further study of DA-ET systems, including linked donor-acceptor molecules [37] that might provide improved reversibility.…”

Section: F-14-mentioning

confidence: 99%

Mechanism of photon-gated persistent spectral hole burning in metal-tetrabenzoporphyrin/halomethane systems: donor-acceptor electron transfer

Carter¹,

Braeuchle²,

Lee³

et al. 1987

J. Phys. Chem.

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We have observed photon-gated persistent spectral hole burning for meiotetra-p-tolyl(tetrabenzoporphyrinato)zinc or -magnesium molecules in the presence of several different halomethanes (chloroform, methylene chloride, and methylene bromide) in poly(methyl methacrylate) thin films at liquid helium temperatures. Depending upon the sample composition and porphyrin/halomethane concentration ratio, hole formation is up to 300 times more efficient when two photons are absorbed by the porphyrin as compared to one-photon excitation. After the first (site-selecting) photon excites the singlet-singlet origin absorption near 630 nm, the most efficient photon gating occurs when the second (gating) photon excites a strong triplet-triplet transition near 480 nm. The hole width at 1.4 K is approximately 2.5-GHz full width at half-maximum in an inhomogeneously broadened origin absorption 300 cm"1 in width. Analysis of the halomethane concentration dependence, the action spectrum of the second photon, the photoproduct spectrum, and the dependence of the hole depth on the time delay between the site-selecting and gating light pulses confirms that the mechanism is donor-acceptor electron transfer from an excited triplet state of the porphyrin to a nearby halomethane molecule.

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Distance dependence of photoinduced electron transfer through non-conjugated bridges

Cited by 148 publications

References 23 publications

Electron transfer reactions dynamically coupled to a dielectric medium: Orientational effects and bridge assistance

Electron transfer reactions dynamically coupled to a dielectric medium: Orientational effects and bridge assistance

Pendant unit effect on electron tunneling in U-shaped molecules

Mechanism of photon-gated persistent spectral hole burning in metal-tetrabenzoporphyrin/halomethane systems: donor-acceptor electron transfer

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