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Titolo:
Self-assembly in water of the sodium salts of meso-sulfonatophenyl substituted porphyrins
Autore:
Rubires, R; Crusats, J; El-Hachemi, Z; Jaramillo, T; Lopez, M; Valls, E; Farrera, JA; Ribo, JM;
Indirizzi:
Univ Barcelona, Dept Quim Organ, E-08028 Barcelona, Spain Univ Barcelona Barcelona Spain E-08028 m Organ, E-08028 Barcelona, Spain
Titolo Testata:
NEW JOURNAL OF CHEMISTRY
fascicolo: 2, volume: 23, anno: 1999,
pagine: 189 - 198
SICI:
1144-0546(199902)23:2<189:SIWOTS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESONANCE LIGHT-SCATTERING; SOLUBLE PORPHYRINS; AQUEOUS-SOLUTION; MICELLAR MEDIA; AGGREGATION; MESO-TETRAKIS(4-SULFONATOPHENYL)PORPHYRIN; COMPLEXES; TETRAPHENYLPORPHYRINS; CHEMISTRY; SPONGES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Farrera, JA Univpaincelona, Dept Quim Organ, C Marti & Franques 1, E-08028Barcelona, S Univ Barcelona C Marti & Franques 1 Barcelona Spain E-08028 S
Citazione:
R. Rubires et al., "Self-assembly in water of the sodium salts of meso-sulfonatophenyl substituted porphyrins", NEW J CHEM, 23(2), 1999, pp. 189-198

Abstract

The aggregation in water of the free bases and the diprotonated forms of p-sulfonatophenyl and phenyl meso-substituted porphyrins [sodium salts of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS4), 5,10,15-tris(4-sulfonatophenyl)-20-phenylporphyrin (TPPS3), 5,10-bis(4-sulfonalophenyl)-15,20-diphenylporphyrin (TPPS2A), 5,15-bis(4-sulfonatophenyl)-10,20-diphenylporphyrin (TPPS2O), 5-(4-sulfonatophenyl)-10,15,20-diphenylporphyrin (TPPS1) and 5,15-bis(4-sulfonatophenyl)porphine (DPPS2O)] was studied by UV/Vis, H-1-NMR, fluorescence, polarized fluorescence and resonance light scattering. Thepresence of hydrophobic phenyl groups favours the aggregation. The free bases TPPS4 and TPPS3 aggregate into stacks of ill-defined geometry. TPPS2A and DPPS2O give H-aggregates. TPPS2O and TPPS3 give J-aggregates through interaction of the hydrophobic phenyl groups, that is their geometry corresponds to edge-to-edge arrangements. All these porphyrins give J-aggregates upon diprotonation, through electrostatic interactions between the positively charged porphyrin ring and the sulfonato group. These J-aggregates give different arrays depending on the meso-substitution pattern.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 11:07:55