Počet záznamů: 1
Adsorption and Aggregation of meso-Tetrakis(4-carboxyphenyl)porphyrinato Zinc(II) at the Polarized Water|1,2-Dichloroethane Interface
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SYSNO ASEP 0181581 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Adsorption and Aggregation of meso-Tetrakis(4-carboxyphenyl)porphyrinato Zinc(II) at the Polarized Water|1,2-Dichloroethane Interface Tvůrce(i) Nagatani, H. (CH)
Samec, Zdeněk (UFCH-W) RID, ORCID
Brevet, P. F. (FR)
Fermín, D. J. (CH)
Girault, H. H. (CH)Zdroj.dok. Journal of Physical Chemistry. B - ISSN 1089-5647
Roč. 107, č. 3 (2003), s. 786-790Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova adsorption ; polarized water ; 1,2-dichloroethane interface Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GA203/01/0946 GA ČR - Grantová agentura ČR CEZ AV0Z4040901 - UFCH-W Anotace The specific adsorption of the water-soluble meso-tetrakis(4-carboxyphenyl)porphyrinato zinc(II) (ZnTPPC4-) was studied at the polarizable water|1,2-dichloroethane (DCE) interface by surface second harmonic (SH) generation and quasi-elastic laser scattering (QELS). The intense SH responses were analyzed as a function of the ZnTPPC4- concentration and of the Galvani potential difference. It was confirmed that the coverage of ZnTPPC increases as the Galvani potential difference approaches the formal ion transfer potential. In this potential range, the high interfacial concentration induces the formation of J-aggregates at the interface. The aggregation phenomena manifest itself by a red-shift of the SH response resonant to the Soret band and an overall increase in the SH intensity. At potentials more positive than the formal transfer potential, the SH spectrum exhibits a maximum at the same wavelength of absorption of ZnTPPC in solution, suggesting a low extent. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2004
Počet záznamů: 1