Photophysical characteristics of two model antenna systems:: a fucoxanthin-pyropheoporbide dyad and its peridinin analogue

被引：19

作者：

Osuka, A

Kume, T

Haggquist, GW

Jávorfi, T

Lima, JC

Melo, E

Naqvi, KR ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan

[2] Lexmark Int, Longmont, CO 80503 USA

[3] UNL, Inst Tecnol Quim & Biol, Oeiras, Portugal

[4] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 313卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)01098-2

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：

Photophysical investigations of a fucoxanthin-pheophorbide-alpha dyad and its peridinin analogue have revealed that the efficiency of carotenoid-to-pheophorbide transfer of singlet excitation and of pheophorbide-to-carotenoid transfer of triplet excitation depend markedly both on the solvent and on the dyad, Furthermore, the carotenoid moiety, whose first excited singlet state lies higher than that of its pheophorbide partner, is able to quench the fluorescence of the latter; such indirect quenching, which must entail a process other than the transfer of electronic excitation, might provide a channel for the dissipation of excess energy in some natural antenna systems. (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：499 / 504

页数：6

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