FEMTOSECOND DYNAMICS OF CAROTENOID-TO-CHLOROPHYLL ENERGY-TRANSFER IN THYLAKOID MEMBRANE PREPARATIONS FROM PHAEODACTYLUM-TRICORNUTUM AND NANNOCHLOROPSIS-SP

被引：25

作者：

TRAUTMAN, JK ^{[1
]}

SHREVE, AP ^{[1
]}

OWENS, TG ^{[1
]}

ALBRECHT, AC ^{[1
]}

机构：

[1] CORNELL UNIV,PLANT BIOL SECT,ITHACA,NY 14853

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 166卷 / 04期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(90)85045-E

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：

The rates of carotenoid-to-chlorophyll a singlet energy transfer in thylakoid membrane preparations from the diatom Phaeodactylum tricornutum and the eustigmatophyte Nannochloropsis sp. (clone GSB Sticho) have been determined by femtosecond transient absorption spectroscopy. The transfer time in the eustigmatophyte is 0.24±0.04 ps; in the diatom, the transfer is found to be double exponential with transfer times of 0.5±0.1 and 2.0±0.5 ps and relative amplitudes of 1.7±0.7:1. These results are used to determine that the carotenoid-chlorophyll electronic coupling matrix element is approximately 100 cm-1 for these species. © 1990.

引用

页码：369 / 374

页数：6

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