Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Photoinduced intramolecular charge-transfer systems based on porphyrin-viologen dyads for optical limiting
Autore:
Dupuis, B; Michaut, C; Jouanin, I; Delaire, J; Robin, P; Feneyrou, P; Dentan, V;
Indirizzi:
Ecole Normale Super, UMR 8531 CNRS, PPSM, F-94235 Cachan, France Ecole Normale Super Cachan France F-94235 , PPSM, F-94235 Cachan, France Thomson CSF, Cent Rech Lab, F-91404 Orsay, France Thomson CSF Orsay France F-91404 F, Cent Rech Lab, F-91404 Orsay, France
Titolo Testata:
CHEMICAL PHYSICS LETTERS
fascicolo: 1-2, volume: 300, anno: 1999,
pagine: 169 - 176
SICI:
0009-2614(19990129)300:1-2<169:PICSBO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-TRANSFER; FLUORESCENCE; SEPARATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Delaire, J Ecolen,ormale Super, UMR 8531 CNRS, PPSM, 61 Ave Prdt Wilson, F-94235 Cacha Ecole Normale Super 61 Ave Prdt Wilson Cachan France F-94235 a
Citazione:
B. Dupuis et al., "Photoinduced intramolecular charge-transfer systems based on porphyrin-viologen dyads for optical limiting", CHEM P LETT, 300(1-2), 1999, pp. 169-176

Abstract

Photoinduced intramolecular charge transfer in porphyrin-viologen dyads has been investigated as a potential method leading to optical limiting in the nanosecond range. Solutions of these dyads in acetonitrile were studied by picosecond and nanosecond time-resolved fluorescence and absorption spectroscopy. Both methods give evidence of efficient photoinduced charge separation. Nonlinear transmission measurements around 600 nm with nanosecond laser pulses have shown that the dyad solution leads to a lower transmission at high incident fluences (>1 J/cm(2)) than the model porphyrin solution. Moreover, this dyed solution is more efficient than a solution of porphyrin with added viologen, both solutions having the same quenching efficiency. (C) 1999 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 11/07/20 alle ore 11:17:38