Abstract
The kinetics of photocoloration of spiro compounds under continuous UV irradiation were analyzed. Using spirooxazine as an example, it was shown that the shape of the kinetic curve of spirooxazine absorbance in the course of photocoloration is the most sensitive to the photocoloration quantum yield and the molar decadic absorption coefficient of the colored form in the visible spectral region. The photocoloration rate was found to increase with increasing temperature as a result of the temperature dependence of the photocoloration quantum yield. The activation energies for photocoloration E ‡ col and for thermal bleaching E ‡ bleach were determined for a series of spiropyrans, and it was found that E ‡ col < E ‡ bleach.
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REFERENCES
Krysanov, S.A. and Alfimov, M.V., Chem. Phys. Lett., 1982, vol. 91, p. 77.
Atabekyan, L.S. and Chibisov, A.K., Izv. Akad. Nauk SSSR, Ser. Khim., 1984, no. 7, p. 1487.
Atabekyan, L.S. and Chibisov, A.K., J. Photochem., 1985, vol. 31, p. 123.
Schneider, S., Z. Phys. Chem. (Munich), 1987, vol. 154, nos. 1-2, p. 91.
Tamai, N. and Masuhara, H., Chem. Phys. Lett., 1992, vol. 191, nos. 1-2, p. 189.
Görner, H., Atabekyan, L.S., and Chibisov, A.K., Chem. Phys. Lett., 1996, vol. 260, p. 59.
Atabekyan, L.S., Chibisov, A.K., Guglielmetti, R., and Samat, A., Khim. Vys. Energ., 1996, vol. 30, no. 2, p. 133 [High Energy Chem. (Engl. transl.), 1996, vol. 30, no. 2, p. 120].
Chibisov, A.K. and Görner, H., J. Phys. Chem., 1997, vol. 101, no. 24, p. 4305.
Chibisov, A.K. and Görner, H., Chem. Phys., 1998, vol. 237, p. 425.
Chibisov, A.K. and Görner, H., J. Phys. Chem. A, 1999, vol. 103, no. 26, p. 5211.
Görner, H., Phys. Chem. Chem. Phys., 2001, vol. 3, p. 416.
Chibisov, A.K. and Görner, H., Phys. Chem. Chem. Phys., 2001, vol. 3, p. 424.
Kellmann, A., Tfibel, F., Dubest, R., Levoir, P., Aubard, J., Pottier, E., and Guglielmetti, R., J. Photochem. Photobiol. A: Chem., 1989, vol. 49, nos. 1-2, p. 63.
Pimienta, V., Levy, G., Lavabre, D., Samat, A., Guglielmetti, R., and Micheau, J.C., Mol. Cryst. Liq. Cryst., 1994, vol. 246, p. 283.
Pimienta, V., Lavabre, D., Levy, G., Samat, A., Guglielmetti, R., and Micheau, J.C., J. Phys. Chem., 1999, vol. 100, no. 10, p. 4485.
Deniel, M.H., Tixier, J., Houze-Luccion, B., Lavabre, D., and Micheau, J.C., Mol. Cryst. Liq. Cryst., 1997, vol. 298, p. 121.
Pimienta, V., Froute, C., Deniel, M.H., Lavabre, D., Guglielmetti, R., and Micheau, J.C., J. Photochem. Photobiol. A: Chem., 1999, vol. 122, p. 199.
Deniel, M.H., Lavabre, D., and Micheau, J.C., Organic Photochromic and Thermochromic Compounds, Crano, J.C. and Guglielmetti, R., Eds., New York: Plenum, 1999, vol. 2, p. 167.
Atabekyan, L.S., Zakharova, G.V., and Chibisov, A.K., Khim. Vys. Energ., 2001, vol. 35, no. 5, p. 391 [High Energy Chem. (Engl. transl.), 2001, vol. 35, no. 5, p.349].
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Atabekyan, L.S., Zakharova, G.V., Ogienko, V.N. et al. Photochromic Transformations of Spiro Compounds: 2. The Kinetics of Photocoloration under Continuous Irradiation. High Energy Chemistry 36, 322–325 (2002). https://doi.org/10.1023/A:1020294500261
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DOI: https://doi.org/10.1023/A:1020294500261