Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Photolysis of diaryliodonium salts (UV/Vis, EPR and GC/MS investigations)
Autore:
Jancovicova, V; Brezova, V; Ciganek, M; Cibulkova, Z;
Indirizzi:
Slovak Tech Univ, Fac Chem Technol, Dept Printing Arts Technol & Appl Photochem, SK-81237 Bratislava, Slovakia Slovak Tech Univ Bratislava SlovakiaSK-81237 81237 Bratislava, Slovakia Slovak Tech Univ, Fac Chem Technol, Dept Phys Chem, SK-81237 Bratislava, Slovakia Slovak Tech Univ Bratislava Slovakia SK-81237 81237 Bratislava, Slovakia Tech Univ Brno, Fac Chem, Inst Environm Chem, CZ-61200 Brno, Czech Republic Tech Univ Brno Brno Czech Republic CZ-61200 Z-61200 Brno, Czech Republic
Titolo Testata:
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
fascicolo: 3, volume: 136, anno: 2000,
pagine: 195 - 202
SICI:
1010-6030(20000929)136:3<195:PODS(E>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-SPIN-RESONANCE; IODONIUM SALTS; ONIUM SALTS; CATIONIC PHOTOPOLYMERIZATION; PHOTOCHEMICAL DECOMPOSITION; SENSITIZED PHOTOLYSIS; SOLVENT DEPENDENCE; AZO-COMPOUNDS; MONOMERS; ETHERS;
Keywords:
iodonium salts; photolysis; UV/Vis spectroscopy; EPR; spin trapping; GC/MS analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Jancovicova, V Slovak Tech Univ, Fac Chem Technol, Dept Printing Arts Technol & Appl Photochem, Radlinskeho 9, SK-81237 Bratislava, Slovakia Slovak Tech Univ Radlinskeho 9 Bratislava Slovakia SK-81237
Citazione:
V. Jancovicova et al., "Photolysis of diaryliodonium salts (UV/Vis, EPR and GC/MS investigations)", J PHOTOCH A, 136(3), 2000, pp. 195-202

Abstract

The photodecomposition of commercial lipophilic diaryliodonium hexafluoroantimonate SarCat(R) SR-1012 was investigated in acetonitrile (ACN) and ACN/H2O mixed solvents by means of UV/Vis spectroscopy, an EPR in situ spin trapping technique and GC/MS analysis. The application of the spin traps nitrosodurene (ND) and 5,5-dimethyl-1-pyrroline N-oxide gave evidence for the production of radical intermediates corresponding to the breaking of the carbon-iodine bond, in addition to carbon-oxygen bonds in SR-1012 aryl substitution. The photolytic products analyzed in aprotic acetonitrile were iodobenzene, acetanilide, biphenyl and C12H25CH(OH)CH3, while in ACN/H2O (1:1, vol.) solution iodobenzene, biphenyl, C12H25CH(OH)CH2OC6H4OH and hydroxylated biphenyls were identified. The influence of oxygen on the product distribution in both solvent systems was inconsequential. The proton concentrations photogenerated in the irradiated SR-1012 ACN/H2O solutions were quantified spectrophotometrically using bromophenol blue indicator. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/10/20 alle ore 08:55:55