Electron Transfer in Porphyrin Complexes in Different Solvents

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Electron Transfer in Porphyrin Complexes in Different Solvents

The electron transfer in different solvents is investigated for systems consisting of donor, bridge and acceptor. It is assumed that vibrational relaxation is much faster than the electron transfer. Electron transfer rates and final populations of the acceptor state are calculated numerically and in an approximate fashion analytically. In wide parameter regimes these solutions are in very good ...

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Electron transfer reaction of porphyrin and porphycene complexes of Cu(II) and Zn(II) in acetonitrile.

The outer-sphere one-electron oxidation reaction of the Cu(II) and Zn(II) complexes of nonplanar 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrin and planar porphycenes as well as those of 2,3,7,8,12,13,17,18-octaethylporphyrin and 5,10,15,20-tetraphenylporphyrin by Cu(2+) giving corresponding pi-cation radicals was investigated spectrophotometrically in acetonitrile. The electron ...

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Electron transfer reactions between copper(II) porphyrin complexes and various oxidizing reagents in acetonitrile.

Homogeneous electron transfer reactions of the Cu(II) complexes of 5,10,15,20-tetraphenylporphyrin (TPP) and 2,3,7,8,12,13,17,18-octaethylporphyrin (OEP) with various oxidizing reagents were spectrophotometrically investigated in acetonitrile. The reaction products were confirmed to be the pi-cation radicals of the corresponding Cu(II)-porphyrin complexes on the basis of the electronic spectra ...

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Photo-induced Intermolecular Charge Transfer in Porphyrin Complexes

Optical excitation of the sequential supermolecule H2P −ZnP −Q induces an electron transfer from the free-base porphyrin (H2P ) to the quinone (Q) via the zinc porphyrin (ZnP ). This process is modeled by equations of motion for the reduced density matrix which are solved numerically and approximately analytically. These two solutions agree very well in a great region of parameter space. It is ...

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Solvent reorganization energy of electron-transfer reactions in polar solvents.

A microscopic theory of solvent reorganization energy in polar molecular solvents is developed. The theory represents the solvent response as a combination of the density and polarization fluctuations of the solvent given in terms of the density and polarization structure factors. A fully analytical formulation of the theory is provided for a solute of arbitrary shape with an arbitrary distribu...

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ژورنال

عنوان ژورنال: The Journal of Physical Chemistry A

سال: 2000

ISSN: 1089-5639,1520-5215

DOI: 10.1021/jp994338v