Electron transfer by singlet excited state of porphyn and electron acceptor affinity in rigid medium: photoacoustic phase angle analysis
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Keywords

Electron transfer
Fotoacoustic spectroscopy
Phase
Acceptor
Donor
Polymer

How to Cite

Cornélio, M. L. (1997). Electron transfer by singlet excited state of porphyn and electron acceptor affinity in rigid medium: photoacoustic phase angle analysis. Eclética Química, 22(1), 83–92. https://doi.org/10.26850/1678-4618eqj.v22.1.1997.p83-92

Abstract

Photoacoustic spectroscopy provides information about both amplitude and phase of the response of a system to an optical excitation process. This paper presents the studies of the phase in the electron transfer process between octaethylporphyn (OEP) and quinone molecules dispersed in a polymeric matrix. It was observed a tendency in the phase behavior to small values only in the spectral region near to 620 nm, while for shorter wavelength did not show any tendency. These measurements suggested that the electron transfer to acceptor occurred with the participation of octaethylporphyn singlet excited state.

https://doi.org/10.26850/1678-4618eqj.v22.1.1997.p83-92
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References

CALLIS, J. The calorimetric detection of excited states. J. Res. Natl. Stand. Sect. A . v.80A, p.413-19, 1976. [ Links ]

CORNELIO, M.L., SANCHES, R., Monitoring electron transfer by photoacoustic spectroscopy. European Biophysics Journal, v.23, n. 6, p.439-42, 1995. [ Links ]

_____________. The use of photoacoustic spectroscopy to determine the critical distance for electron transfer. J. Biochem. Biophys. Methods. v.29, p.149-55, 1994. [ Links ]

KASHA, M. Discuss. Faraday Soc. v.9, p.14-9, 1950. [ Links ]

HARSHBARGER, W. R., ROBIN, M. B. Acco. Chem Res. v.6, p.329, 1973 [ Links ]

KHOLMOGOROV, V.E., BOBROSVSKII, A.P. Problems of Biophotochemistry. Moscow: Nauka, 1973. [ Links ]

McDONALD, F., WETSEL, G. Generalized theory of the photoacoustic effect. J. Appl. Phys. v.49, p.2313-22, 1978. [ Links ]

MERKLE, L. D., POWELL, R. C. J. Phys. C, v.11, p.303, 1977. [ Links ]

MILLER, J.R., BEITZ, J.V. Exotermic rate restriction on electron transfer in a rigid medium. J. Chem. Phys. v.71, p. 4579, 1979. [ Links ]

ROSENCWAIG, A., GERSHO, A. Theory of the photoacoustic effect with solids. J. Appl. Phys, v.47, p.64-9, 1976. [ Links ]

SCAIANO, J.C. (Ed.) CRC Handbook of Organic Photochemistry, Boca Raton, CRC Press, 1989. vol. 1, p.328. [ Links ]

____________. (Ed.) CRC Handbook of Organic Photochemistry, Boca Raton, CRC Press, 1989. vol.2. [ Links ]

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