CARBOXYLATED ZINC‐PHTHALOCYANINES–II DIMERIZATION AND SINGLET MOLECULAR OXYGEN SENSITIZATION IN HEXADECYLTRIMETHYLAMMONIUM BROMIDE MICELLES
The dimerization of the diamide of zinc‐tetracarboxyphthalocyanine was studied spectro‐scopically in hexadecyltrimethylammonium bromide (CTAB) micelles at surfactant concentrations from 0.026 to 0.1 M and dye concentrations between 0.1 and 10 μM. The apparent dimerization constant in CTAB 0.1 M is 8...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
1991
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| LEADER | 11192caa a22010217a 4500 | ||
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| 001 | PAPER-430 | ||
| 003 | AR-BaUEN | ||
| 005 | 20250217085226.0 | ||
| 008 | 190411s1991 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0026215086 | |
| 024 | 7 | |2 cas |a cetrimide, 57-09-0, 6899-10-1, 8044-71-1; oxygen, 7782-44-7; zinc, 7440-66-6; Cetrimonium Compounds; cetrimonium, 6899-10-1; Indoles; Organometallic Compounds; Oxygen, 7782-44-7; Singlet Oxygen, 17778-80-2; zinc tetracarboxyphthalocyanine; Zinc, 7440-66-6 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Daraio, Marta Edit | |
| 245 | 1 | 0 | |a CARBOXYLATED ZINC‐PHTHALOCYANINES–II DIMERIZATION AND SINGLET MOLECULAR OXYGEN SENSITIZATION IN HEXADECYLTRIMETHYLAMMONIUM BROMIDE MICELLES |
| 260 | |c 1991 | ||
| 270 | 1 | 0 | |m Braslavsky, S.E. |
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| 504 | |a Darwent, J.R., McCubbin, I., Porter, G., Pho‐toreduction of methyl viologen sensitized by sulfonated phthalocyanines in micellar solutions (1982) J. Chem. Soc. Faraday Trans. 2, 78, pp. 903-910 | ||
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| 504 | |a Valduga, G., Nonell, S., Reddi, E., Jori, G., Braslavsky, S.E., The production of singlet molecular oxygen by zinc(II)‐phthalocyanine in ethanol and in unilamellar vesicles. Chemical quenching and phosphorescence studies (1988) Photochem. Photobiol., 48, pp. 1-5 | ||
| 504 | |a Valduga, G., Reddi, E., Jori, G., Spectroscopic studies on Zn(II)‐phthalocyanine in homogenous and microheterogeneous systems (1987) J. Inorg. Biochem., 29, pp. 59-65 | ||
| 504 | |a Wagner, J.R., Ah, H., Langlois, R., Brasseur, N., Van Lier, J.E., Biological‐activities of phthalocyanines. VI. Photooxidation of L‐Tryptophan by selectively sulfonated gallium phthalocyanines. Singlet oxygen yields and effect of aggregation (1987) Photochem. Photobiol., 45, pp. 587-594 | ||
| 504 | |a Wegner, E.E., Adamson, A.W., Photochemistry of complex ions III. Absolute quantum yields for the photolysis of some aqueous chromium (III) complexes. Chemical actinometry in long wavelength visible region (1966) J. Am. Chem. Soc., 88, pp. 394-404 | ||
| 504 | |a Wu, S.K., Zhang, H.C., Cui, G.Z., Xu, D.N., Xu, H.J., A study on the ability of some phthalocyanine compounds for photo‐generating singlet oxygen (1985) Act. Chim. Sinica., 43, pp. 10-13 | ||
| 504 | |a Yang, Y.C., Ward, J.R., Seiders, R.P., Dimerization of cobalt(II) tetrasulfonated phthalocyanine in water and aqueous alcoholic solutions (1985) Inorg. Chem., 24, pp. 1765-1769 | ||
| 504 | |a Zhu, Y.N., Xiao, X.R., Xu, H.J., A study of photocatalytic cleavage of water by Zinc tetracar‐boxyphthalocyanine. Ganguang Kexue Yu Kuang Huaxue 2 (1985) Photographic Sci. Photochem., 2, pp. 48-56. , (from Chem. Abstr. 132205 a, Vol. 103) | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a The dimerization of the diamide of zinc‐tetracarboxyphthalocyanine was studied spectro‐scopically in hexadecyltrimethylammonium bromide (CTAB) micelles at surfactant concentrations from 0.026 to 0.1 M and dye concentrations between 0.1 and 10 μM. The apparent dimerization constant in CTAB 0.1 M is 8.6 × 105M−1, while the intramicellar dimerization constant is 1.8 × 103. The dimer absorption spectrum was also obtained. Singlet molecular oxygen sensitization was studied by steady state photolysis using 1,3‐diphenylisobenzofurane as scavenger in 0.1 M CTAB. The usual sensitization mechanism is extended to include dimer reactions. Singlet molecular oxygen sensitization yields for monomer and dimer in the micelles are 0.7 and 0.1, respectively. With the reported values it is possible to calculate the average yield of singlet molecular oxygen production at any surfactant and dye concentrations. Copyright © 1991, Wiley Blackwell. All rights reserved |l eng | |
| 593 | |a Departamento de Química Inorgánica, Analitica Y Química Fisica, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina | ||
| 593 | |a Max-Planck-Institut für Strahlenchemie, Stiftstraße34-36, Mülheim A.D. Ruhr, W-4330, Germany | ||
| 650 | 1 | 7 | |2 spines |a INDOLES |
| 690 | 1 | 0 | |a CETRIMIDE |
| 690 | 1 | 0 | |a INDOLE DERIVATIVE |
| 690 | 1 | 0 | |a ORGANOMETALLIC COMPOUND |
| 690 | 1 | 0 | |a OXYGEN |
| 690 | 1 | 0 | |a SINGLET OXYGEN |
| 690 | 1 | 0 | |a ZINC |
| 690 | 1 | 0 | |a ZINC TETRACARBOXYPHTHALOCYANINE |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CHEMISTRY |
| 690 | 1 | 0 | |a MICELLE |
| 690 | 1 | 0 | |a PHOTOCHEMISTRY |
| 690 | 1 | 0 | |a SPECTROPHOTOMETRY |
| 690 | 1 | 0 | |a CETRIMONIUM COMPOUNDS |
| 690 | 1 | 0 | |a MICELLES |
| 690 | 1 | 0 | |a ORGANOMETALLIC COMPOUNDS |
| 690 | 1 | 0 | |a OXYGEN |
| 690 | 1 | 0 | |a PHOTOCHEMISTRY |
| 690 | 1 | 0 | |a SINGLET OXYGEN |
| 690 | 1 | 0 | |a SPECTROPHOTOMETRY |
| 690 | 1 | 0 | |a SUPPORT, NON-U.S. GOV'T |
| 690 | 1 | 0 | |a ZINC |
| 700 | 1 | |a Aramendía, P.F. | |
| 700 | 1 | |a San Román, E.A. | |
| 700 | 1 | |a Braslavsky, Silvia Elsa | |
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