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Titolo:
Fluorescence spectroscopy of all-trans-anhydrorhodovibrin and spirilloxanthin: Detection of the 1B(u)(-) fluorescence
Autore:
Fujii, R; Ishikawa, T; Koyama, Y; Taguchi, M; Isobe, Y; Nagae, H; Watanabe, Y;
Indirizzi:
Kwansei Gakuin Univ, Fac Sci, Dept Chem, Nishinomiya, Hyogo 6628501, JapanKwansei Gakuin Univ Nishinomiya Hyogo Japan 6628501 Hyogo 6628501, Japan Kwansei Gakuin Univ, Fac Sci, Dept Phys, Nishinomiya, Hyogo 6628501, JapanKwansei Gakuin Univ Nishinomiya Hyogo Japan 6628501 Hyogo 6628501, Japan Kobe City Univ Foreign Studies, Nishi Ku, Kobe, Hyogo 6512187, Japan Kobe City Univ Foreign Studies Kobe Hyogo Japan 6512187 go 6512187, Japan
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY A
fascicolo: 22, volume: 105, anno: 2001,
pagine: 5348 - 5355
SICI:
1089-5639(20010607)105:22<5348:FSOAAS>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAMAN EXCITATION PROFILES; S-1 STATE; ELECTRONIC EXCITATIONS; 2A(G)(-) ENERGIES; BETA-CAROTENE; SPHEROIDENE; ABSORPTION; CONJUGATION; DEPENDENCE; MECHANISM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Koyama, Y Kwansei Gakuin Univ, Fac Sci, Dept Chem, 1-1-155 Uegahara, Nishinomiya, Hyogo 6628501, Japan Kwansei Gakuin Univ 1-1-155 Uegahara Nishinomiya Hyogo Japan 6628501
Citazione:
R. Fujii et al., "Fluorescence spectroscopy of all-trans-anhydrorhodovibrin and spirilloxanthin: Detection of the 1B(u)(-) fluorescence", J PHYS CH A, 105(22), 2001, pp. 5348-5355

Abstract

Fluorescence spectra of all-trans-anhydrorhodovibrin and spirilloxanthin having the number of conjugated double bonds n = 12 and 13 were recorded in n-hexane solution. The optically forbidden 2A(g) --> 1A(g)(-) fluorescence was observed for carotenoids having such a long conjugated chain, and the optically forbidden 1B(u)(-) --> 1A(g)(-) fluorescence was identified for the first time. The proposed energies of the 2A(g)(-), 1B(u)(-), and 1B(u)(+)fluorescence origins are 12 500, 14 900, and 19 200 cm(-1) for anhydrorhodovibrin and 11 900, 13 600, and 18 900 cm(-1) for spirilloxanthin (at 295 K). The estimated transition dipole moments for fluorescence from the 2A(g)(-), 1B(u)(-), and 1B(u)(+) states to the ground 1A(g)(-) state are 1.24, 4.76, and 17.4 D for the former and 1.37, 3.72, and 16.8 D for the latter.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 19:57:29