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Titolo:
Photoionization of N-alkylphenothiazines in titanosilicate mesoporous TiSBA-15 molecular sieves
Autore:
Luan, ZH; Bae, JY; Kevan, L;
Indirizzi:
Univ Houston, Dept Chem, Houston, TX 77204 USA Univ Houston Houston TX USA 77204 uston, Dept Chem, Houston, TX 77204 USA
Titolo Testata:
MICROPOROUS AND MESOPOROUS MATERIALS
fascicolo: 1-3, volume: 48, anno: 2001,
pagine: 189 - 194
SICI:
1387-1811(20011101)48:1-3<189:PONITM>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFERENT PORE SIZES; DIHEXADECYL PHOSPHATE VESICLES; PHOTOINDUCED CHARGE SEPARATION; ELECTRON-SPIN-RESONANCE; PHENOTHIAZINE-DERIVATIVES; SILICA-GELS; ACCEPTORS; OXIDATION; TITANIUM; SBA-15;
Keywords:
SBA-15; titanium photoionization; N-alkylphenothiazines;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Kevan, L Univ Houston, Dept Chem, Houston, TX 77204 USA Univ Houston Houston TX USA 77204 pt Chem, Houston, TX 77204 USA
Citazione:
Z.H. Luan et al., "Photoionization of N-alkylphenothiazines in titanosilicate mesoporous TiSBA-15 molecular sieves", MICROP M M, 48(1-3), 2001, pp. 189-194

Abstract

N-alkylphenothiazines (PCn, where n = 1, 6, 10, 16) have been incorporatedinto titanosilicate mesoporous TiSBA-15 molecular sieve and photoionized at room temperature to form stable alkylphenothiazine cation radicals (PCn-), which are monitored by electron spin resonance spectroscopy. The results show that the photoyield and stability of PCn+ radicals strongly depend on the titanium content in the TiSBA-15 framework, suggesting that framework Ti(IV) serves as an effective electron acceptor. The overall photoyield and stability of PCn+ increase with increasing titanium content of 2-4% in TiSBA-15 and with increasing alkyl chain length of the alkylphenothiazine. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 08:49:16