Effect of aggregation of a cationic phthalocyanine in micelles and in the presence of human serum albumin
The photophysical properties of tetrakis(1,1-dimethyl-2-trimethylammonium) ethylphthalocyaninato zinc(II) tetraiodide (I) - a water-soluble cationic phthalocyanine - are presented in the presence of human serum albumin (HSA) and in micelles of sodium dodecylsulfate (SDS) and hexadecyltrimethylammoni...
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Society of Porphyrins and Phthalocyanines (SPP)
2006
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 06858caa a22007697a 4500 | ||
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| 001 | PAPER-21911 | ||
| 003 | AR-BaUEN | ||
| 005 | 20241101092320.0 | ||
| 008 | 190411s2006 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-33745826620 | |
| 030 | |a JPPHF | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Rodriguez, M.E. | |
| 245 | 1 | 0 | |a Effect of aggregation of a cationic phthalocyanine in micelles and in the presence of human serum albumin |
| 260 | |b Society of Porphyrins and Phthalocyanines (SPP) |c 2006 | ||
| 270 | 1 | 0 | |m Dicelio, L.E.; INQUIMAE, Departamento de Química Inorgánica, Analítica Y Química Física, Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: led@q1.fcen.uba.ar |
| 504 | |a MacDonald, I.J., Dougherty, T.J., (2001) J. Porphyrins Phthalocyanines, 5, pp. 105-129 | ||
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| 504 | |a Fernández, D.A., Dicelio, L.E., Awruch, J., (1995) J. Heterocyclic Chem., 32, pp. 519-522 | ||
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| 504 | |a Rodriguez, M.E., Awruch, J., Dicelio, L.E., (2002) J. Porphyrins Phthalocyanines, 6, pp. 122-129 | ||
| 504 | |a Daraio, M.E., Aramendía, P.F., San Román, E.A., Braslavsky, S.E., (1991) Photochem. Photobiol., 54, pp. 367-373 | ||
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a The photophysical properties of tetrakis(1,1-dimethyl-2-trimethylammonium) ethylphthalocyaninato zinc(II) tetraiodide (I) - a water-soluble cationic phthalocyanine - are presented in the presence of human serum albumin (HSA) and in micelles of sodium dodecylsulfate (SDS) and hexadecyltrimethylammonium chloride (CTAC). Spectrophotometric measurements showed that the surfactants SDS and CTAC induce monomerization of I, although the latter less efficiently than the former. This effect is less pronounced in the presence of HSA. The strength of this effect is evaluated through dimerization constants, which are K d = (5 ± 1) × 105 M-1 in SDS, (1.5 ± 0.5) × 106 M-1 in CTAC, and (1.8 ± 0.9) × 106 M-1 in HSA. Fluorescence experiments confirm that aggregation of I drops as the concentration of surfactant is raised. Triplet quantum yields also decreased upon aggregation and were ΦT = 0.59, 0.16, and < 0.01 in SDS, CTAC, and HSA, respectively. These results indicate that the affinity of I for the environment is not just due to ionic interactions; hydrophobic interactions play an equally important role. Copyright © 2006 Society of Porphyrins & Phthalocyanines. |l eng | |
| 593 | |a INQUIMAE, Departamento de Química Inorgánica, Analítica Y Química Física, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 593 | |a Departamento de Química Orgánica, Facultad de Farmacia Y Bioquímica, Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, Argentina | ||
| 593 | |a Max-Planck-Institut für Bioanorganische Chemie (Formerly Strahlenchemie), Postfach 10 13 65, D-45413 Mülheim an der Ruhr, Germany | ||
| 593 | |a Tyrolit Argentina S.A. Boquerón 741-(B1708CRE), Morón, Argentina | ||
| 690 | 1 | 0 | |a AGGREGATION |
| 690 | 1 | 0 | |a ALBUMIN |
| 690 | 1 | 0 | |a HYDROPHOBIC INTERACTIONS |
| 690 | 1 | 0 | |a MICELLES |
| 690 | 1 | 0 | |a TETRAKIS(1,1- DIMETHYL-2-TRIMETHYLAMMONIUM)ETHYLPHTHALOCYANINATO ZINC(II) TETRAIODIDE |
| 700 | 1 | |a Fernández, D.A. | |
| 700 | 1 | |a Awruch, J. | |
| 700 | 1 | |a Braslavsky, Silvia Elsa | |
| 700 | 1 | |a Dicelio, L.E. | |
| 773 | 0 | |d Society of Porphyrins and Phthalocyanines (SPP), 2006 |g v. 10 |h pp. 33-42 |k n. 1 |p J. Porphyrins Phthalocyanines |x 10884246 |t Journal of Porphyrins and Phthalocyanines | |
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| 856 | 4 | 0 | |u https://doi.org/10.1142/S1088424606000053 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_10884246_v10_n1_p33_Rodriguez |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10884246_v10_n1_p33_Rodriguez |y Registro en la Biblioteca Digital |
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| 999 | |c 82864 | ||