Two-Dimensional Free Energy Surfaces for Electron Transfer Reactions in Solution | Zendy

Shigeo Murata | Zendy; Maged ElKemary | Zendy; M. Tachiya | Zendy

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Two-Dimensional Free Energy Surfaces for Electron Transfer Reactions in Solution

Author(s) -

Shigeo Murata,

Maged ElKemary,

M. Tachiya

Publication year - 2008

Publication title -

international journal of photoenergy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.426

H-Index - 51

eISSN - 1687-529X

pISSN - 1110-662X

DOI - 10.1155/2008/150682

Subject(s) - intermolecular force , chemistry , solvent , polar , solvent effects , chemical physics , electron transfer , acceptor , polarization (electrochemistry) , excimer , quenching (fluorescence) , photochemistry , electron , electron acceptor , fluorescence , physics , molecule , condensed matter physics , organic chemistry , optics , quantum mechanics , astronomy

Change in intermolecular distance between electron donor (D) and acceptor (A) can induce intermolecular electron transfer (ET) even in nonpolar solvent, where solvent orientational polarization is absent. This was shown by making simple calculations of the energies of the initial and final states of ET. In the case of polar solvent, the free energies are functions of both D-A distance and solvent orientational polarization. On the basis of 2-dimensional free energy surfaces, the relation of Marcus ET and exciplex formation is discussed. The transient effect in fluorescence quenching was measured for several D-A pairs in a nonpolar solvent. The results were analyzed by assuming a distance dependence of the ET rate that is consistent with the above model

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