Luminescence Characteristics of 5-Aminoindazole in Cationic and Anionic Micelles at Various pH

Autor:	Sneh K. Dogra, Siddarth Pandey, Ranjit S. Sarpal
Rok vydání:	1995
Předmět:	Inorganic chemistry Cationic polymerization Quantum yield Protonation Micelle Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Deprotonation chemistry Bromide Amine gas treating Sodium dodecyl sulfate
Zdroj:	Journal of Colloid and Interface Science. 172:407-414
ISSN:	0021-9797
DOI:	10.1006/jcis.1995.1271
Popis:	Fluorescence characteristics of 5-aminoindazole (5-INH 2 ) have been studied at various acid-base concentrations in sodium dodecyl sulfate and cetyltrimethylammonium bromide (CTAB). The decrease in the fluorescence quantum yields of 5-INH 2 in CTAB at pH 9 is partly due to the effect of the medium and partly due to bromide ion-induced fluorescence quenching. Interaction of this amine with detergent molecules at pH 9 leads to premicellar formation. Prototropic reactions in the micellar interface in S 0 and S 1 states involve the protonation and deprotonation of the amino group only. Biprotonic phototautomerism of singly protonated species is not observed in the micellar interface. Apparent p K a values, which were determined for both equilibrium reactions, are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9657f013c945ba4cc923a5fbd9995471 https://doi.org/10.1006/jcis.1995.1271 Zobrazit plný text záznamu Full Text from ScienceDirect