Quantum Coherence Enabled Determination of the Energy Landscape in Light-Harvesting Complex II

被引：254

作者：

Calhoun, Tessa R. ^{[1
,2
,3
]}

Ginsberg, Naomi S. ^{[1
,2
,3
]}

Schlau-Cohen, Gabriela S. ^{[1
,2
,3
]}

Cheng, Yuan-Chung ^{[1
,2
,3
]}

Ballottari, Matteo ^{[4
]}

Bassi, Roberto ^{[4
]}

Fleming, Graham R. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Inst QB3, Berkeley, CA 94720 USA

[3] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA

[4] Univ Verona, Dept Biotechnol, I-37134 Verona, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 113卷 / 51期

关键词：

2-DIMENSIONAL SPECTROSCOPY; DYNAMICS; PHOTOSYNTHESIS; DISSIPATION; COUPLINGS; MECHANISM; DENSITY; MODEL;

D O I：

10.1021/jp908300c

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 near-unity efficiency of energy transfer in photosynthesis makes photosynthetic light-harvesting complexes a promising avenue for developing new renewable energy technologies. Knowledge of the energy landscape of these complexes is essential in understanding their function, but its experimental determination has proven elusive. Here, the observation of quantum coherence using two-dimensional electronic spectroscopy is employed to directly measure the 14 lowest electronic energy levels in light-harvesting complex II (LHCII), the most abundant antenna complex in plants containing approximately 50% of the world's chlorophyll, We observe that the electronically excited states are relatively evenly distributed, highlighting an important design principle of photosynthetic complexes that explains the observed ultrafast intracomplex energy transfer in LHCII.

引用

页码：16291 / 16295

页数：5

共 29 条

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