A new singlet-excited state of all-trans-spheroidene as detected by resonance-Raman excitation profiles

被引：98

作者：

Sashima, T

Nagae, H

Kuki, M

Koyama, Y ^{[1
]}

机构：

[1] Kwansei Gakuin Univ, Fac Sci, Nishinomiya, Hyogo 6628501, Japan

[2] Kobe City Univ Foreign Studies, Nishi Ku, Kobe, Hyogo 6512187, Japan

[3] Kobe City Coll Technol, Dept Appl Chem, Nishi Ku, Kobe, Hyogo 6512194, Japan

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 299卷 / 02期

关键词：

D O I：

10.1016/S0009-2614(98)01278-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Measurements of resonance-Raman excitation profiles of the C=C and C-C stretching Raman lines for crystalline all-trans-spheroidene in KBr disc at 77 K identified a new singlet state (17600 cm(-1)) that is located in-between the 2A(g)(-) state (14200 cm(-1)) and the 1B(u)(+) state(19700 cm(-1)). The particular state is tentatively assigned to the 1B(u)(-) state on the basis of the extrapolation of the PPP-MRD-CI calculations for the low-lying singlet states of shorter polyenes [P. Tavan, K. Schulten, J. Chem. Phys. 85 (1986) 6602], and its possible role in mediating the rapid 1B(u)(+) to 2A(g)(-) internal conversion is discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：187 / 194

页数：8

共 19 条

[1] INTRAMOLECULAR RADIATIONLESS TRANSITIONS [J].