Reaction of zinc phthalocyanine excited states with amines in cationic micelles

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Excited state deactivation of a zinc phthalocyanine (ZnPc) by amines was studied in micelles of hexadecyltrimethylammonium chloride. The singlet state deactivation was studied by fluorescence quenching. This technique allows us to determine equilibrium constants for the distribution of the amines be...

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Detalles Bibliográficos
Autor principal: Daraio, Marta Edit
Otros Autores: Völker, A., Aramendía, P.F, San Román, E.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1996
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Daraio, Marta Edit 
245 1 0 |a Reaction of zinc phthalocyanine excited states with amines in cationic micelles 
260 |c 1996 
270 1 0 |m Aramendía, P.F.; Depto. Quim. Inorg., Analitica y Q., Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
504 |a Kalyanasundaram, K., (1987) Photochemistry in Microheterogeneous Systems, , Academic Press: Orlando, FL 
504 |a Grätzel, M., (1989) Heterogeneous Photochemical Electron Transfer, , CRC Press: Boca Raton, FL 
504 |a Gehlen, M.H., De Schryver, F.C., (1993) Chem. Rev., 93, p. 199 
504 |a Tachiya, M., (1975) Chem. Phys. Lett., 33, p. 289 
504 |a note; Hunter, T.F., (1980) Chem. Phys. Lett., 75, p. 152 
504 |a Encinas, M.V., Lissi, E.A., (1982) Chem. Phys. Lett., 91, p. 55 
504 |a Blatt, E., Chatelier, R.C., Sawyer, W.H., (1984) Chem. Phys. Lett., 108, p. 397 
504 |a Tachiya, M., (1982) J. Chem. Phys., 76, p. 340 
504 |a Daraio, M.E., Aramendia, P.F., San Román, E., (1996) Chem. Phys. Lett., 250, p. 203 
504 |a Blatt, E., Chatelier, R.C., Sawyer, W.H., (1986) Biophys. J., 50, p. 349 
504 |a Jori, G., Perria, C., (1985) Photodynamic Therapy of Tumors and Other Diseases, , Libreria Progetto Editore: Padova 
504 |a Wilkinson, F., (1988) Photoinduced Electron Transfer, (PART A). , Fox. M. A., Chanon, M., Eds.; Elsevier: Amsterdam, Chapter 1.5 
504 |a Meisel, D., Matheson, M.S., (1989) Photocatalysis. Fundamentals and Applications, , Serpone, N., Pelizzetti, E., Eds.; J. Wiley: New York, Chapter 12 
504 |a Negri, R.M., Zalts, A., San Roman, E.A., Aramendía, P.F., Braslavsky, S.E., (1991) Photochem. Photobiol., 53, p. 317 
504 |a Daraio, M.E., Aramendia, P.F., San Roman, E.A., Braslavsky, S.E., (1991) Photochem. Photobiol., 54, p. 367 
504 |a Daraio, M.E., Aramendia, P.F., San Roman, E.A., (1994) J. Photochem. Photobiol, A:Chem., 77, p. 41 
504 |a Daraio, M.E., Aramendía, P.F., San Román, E., (1993) Chem. Phys. Lett., 204, p. 415 
504 |a Gehlen, M.H., Berci Fo, P., Neumann, M.G., (1991) J. Photochem. Photobiol, A: Chem., 59, p. 335 
504 |a Melo, E.C.C., Costa, S.M.B., (1987) J. Phys. Chem., 91, p. 5635 
504 |a Atik, S.S., Thomas, J.K., (1981) J. Am. Chem. Soc., 103, p. 3550 
504 |a Grätzel, M., Thomas, J.K., (1973) J. Am. Chem. Soc., 95, p. 6885 
504 |a Lianos, P., Viriot, M.L., Zana, R., (1984) J. Phys. Chem., 88, p. 1098 
504 |a Daraio, M.E., Aramendía, P.F., San Román, E., (1995) J. Braz. Chem. Soc., 6, p. 161 
504 |a Haigh, E.A., Thulborn, K.R., Nichol, L.W., Sawyer, W.H., (1978) Aust. J. Biol., 31, p. 447 
504 |a Encinas, M.V., Lissi, E.A., (1985) Photochem. Photobiol., 42, p. 491 
504 |a Katusin-Razem, B., Wong, M., Thomas, J.K., (1978) J. Am. Chem. Soc., 100, p. 1679 
504 |a Xu, H., Shen, T., Zhou, Q., Shen, S., Liu, J., Li, L., Zhou, S., Xiao, X., (1992) J. Photochem. Photobiol., A: Chem., 65, p. 267 
504 |a Darwent, J.R., Douglas, P., Harriman, A., Porter, G., Richoux, M.C., (1982) Coord. Chem. Rev., 44, p. 83 
504 |a Kavarnos, G.J., Turro, N.J., (1986) Chem. Rev., 86, p. 401 
504 |a Frank, J.M., Wawilow, S.J., (1931) Z. Phys., 69, p. 100 
504 |a Tuirko, M.P., Sapunov, V.V., Salovev, K.N., (1973) Opt. Spectrosk., 34, p. 1094 
504 |a Ohno, T., Kato, S., Lichtin, N.N., (1982) Bull. Chem. Soc. Jpn., 55, p. 2753 
504 |a Mack, J., Stillman, M.J., (1994) J. Am. Chem. Soc., 116, p. 1292 
504 |a Clack, D.W., Yandle, J.R., (1972) Inorg. Chem., 11, p. 1738 
506 |2 openaire  |e Política editorial 
520 3 |a Excited state deactivation of a zinc phthalocyanine (ZnPc) by amines was studied in micelles of hexadecyltrimethylammonium chloride. The singlet state deactivation was studied by fluorescence quenching. This technique allows us to determine equilibrium constants for the distribution of the amines between the aqueous and the micellar phases. It could be established that amines associate to the micelles in two different ways: with a greater affinity to a saturable number of sites, that we will term binding sites, and with a lower affinity by a partitioning mechanism. Equilibrium constants could be determined for aliphatic and aromatic amines. A kinetic scheme taking into account the simultaneous quenching of ZnPc fluorescence by the two types of micellized amines could be successfully applied to derive singlet quenching rate constants, under the assumption that micelles behave like closed compartments during the singlet deactivation. Aromatic amines are more efficient than aliphatic ones, and partitioned quenchers are more effective than bound quenchers. Aromatic amines also deactivate the triplet state of ZnPc. By flash photolysis, the absorption of the anion radical of ZnPc was detected. This species originates on singlet and triplet quenching, indicating that both proceed by electron transfer.  |l eng 
593 |a Depto. Quim. Inorg., Analitica y Q., Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
700 1 |a Völker, A. 
700 1 |a Aramendía, P.F. 
700 1 |a San Román, E. 
773 0 |d 1996  |g v. 12  |h pp. 2932-2938  |k n. 12  |p Langmuir  |x 07437463  |t Langmuir 
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