Abstract

With a goal of mimicking the mechanisms of the biological effect of low intensity laser radiation, we have measured the rates of oxygenation of chemical traps of singlet oxygen in air-saturated organic solvents and deuterium oxide upon direct (1270 nm) excitation of the 1Δg -> 3Σ g- transition in oxygen molecules. The data were used for estimation of the molar absorption coefficients of oxygen corresponding to this transition. The obtained values were compared with the radiative lifetimes of singlet oxygen calculated from the quantum yields of singlet oxygen phosphorescence. The quantum efficiencies (the ratios of the photoreaction rates to the irradiation intensities) of oxygenation were compared upon porphyrin-photosensitized and direct oxygen excitation.

© 2005 Chinese Optics Letters

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  16. S. L. Murov, I. Charmichael, and G. L. Hug, Handbook of Photochemistry (Marcel Dekker Inc., New York, Basel, Hong Kong, 1993) p.290.

2004

Yu. A. Vladimirov, G. I. Klebanov, G. G. Borisenko, and A. N. Osipov, Biofizika 49, 339 (2004).

A. A. Krasnovsky, Jr. and R. V. Ambartzumian, Chem. Phys. Lett. 400, 531 (2004).

A. A. Krasnovsky, Jr., Biofizika 49, 305 (2004).

2003

A. A. Krasnovsky, Jr., N. N. Drozdova, A. V. Ivanov, and R. V. Ambartzumian, Biochemistry (Moscow) 68, 963 (2003).

1999

S. D. Zakharov and A. V. Ivanov, Quantum Electron. 29, 1031 (1999).

1995

R. D. Scurlock, S. Nonell, S. E. Braslavsky, and P. R. Ogilby, J. Phys. Chem. 99, 3521 (1995).

1990

R. Schmidt and E. Afshari, J. Phys. Chem. 94, 4377 (1990).

1987

A. A. Krasnovsky, Jr., S. Yu. Egorov, O. V. Nasarova, E. I. Yartsev, and G. V. Ponomarev, Biofizika 32, 982 (1987).

1984

A. Singh, G. W. Koroll, and S. A. Antonsen, J. Photochem. 25, 99 (1984).

1979

I. B. C. Matheson and J. Lee, Photochem. Photobiol. 29, 879 (1979).

1973

R. H. Young, D. Brewer, and R. A. Keller, J. Am. Chem. Soc. 95, 375 (1973).

1970

I. B. C. Matheson and J. Lee, Chem. Phys. Lett. 7, 475 (1970).

1969

D. F. Evans, Chem. Comm. (7) 367 (1969).

Biochemistry (Moscow)

A. A. Krasnovsky, Jr., N. N. Drozdova, A. V. Ivanov, and R. V. Ambartzumian, Biochemistry (Moscow) 68, 963 (2003).

Biofizika

Yu. A. Vladimirov, G. I. Klebanov, G. G. Borisenko, and A. N. Osipov, Biofizika 49, 339 (2004).

A. A. Krasnovsky, Jr., S. Yu. Egorov, O. V. Nasarova, E. I. Yartsev, and G. V. Ponomarev, Biofizika 32, 982 (1987).

A. A. Krasnovsky, Jr., Biofizika 49, 305 (2004).

Chem. Comm.

D. F. Evans, Chem. Comm. (7) 367 (1969).

Chem. Phys. Lett.

I. B. C. Matheson and J. Lee, Chem. Phys. Lett. 7, 475 (1970).

A. A. Krasnovsky, Jr. and R. V. Ambartzumian, Chem. Phys. Lett. 400, 531 (2004).

J. Am. Chem. Soc.

R. H. Young, D. Brewer, and R. A. Keller, J. Am. Chem. Soc. 95, 375 (1973).

J. Photochem.

A. Singh, G. W. Koroll, and S. A. Antonsen, J. Photochem. 25, 99 (1984).

J. Photochem. Photobiol. B: Biol.

T. Karu, J. Photochem. Photobiol. B: Biol. 49, 1 (1999).

J. Phys. Chem.

R. Schmidt and E. Afshari, J. Phys. Chem. 94, 4377 (1990).

R. D. Scurlock, S. Nonell, S. E. Braslavsky, and P. R. Ogilby, J. Phys. Chem. 99, 3521 (1995).

Photochem. Photobiol.

I. B. C. Matheson and J. Lee, Photochem. Photobiol. 29, 879 (1979).

Quantum Electron.

S. D. Zakharov and A. V. Ivanov, Quantum Electron. 29, 1031 (1999).

Other

E. Clare, Polycyclic Hydrocarbons (Academic Press, London and New York, 1964) p.391.

S. L. Murov, I. Charmichael, and G. L. Hug, Handbook of Photochemistry (Marcel Dekker Inc., New York, Basel, Hong Kong, 1993) p.290.

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