Light-Harvesting Systems Based on Organic Nanocrystals To Mimic Chlorosomes

被引：165

作者：

Chen, Peng-Zhong ^{[1
,3
]}

Weng, Yu-Xiang ^{[2
]}

Niu, Li-Ya ^{[1
,3
]}

Chen, Yu-Zhe ^{[3
]}

Wu, Li-Zhu ^{[3
]}

Tung, Chen-Ho ^{[3
]}

Yang, Qing-Zheng ^{[1
,3
]}

机构：

[1] Beijing Normal Univ, Coll Chem, Key Lab Radiopharmaceut, Minist Educ, Beijing 100875, Peoples R China

[2] Chinese Acad Sci, Key Lab Soft Matter Phys, Inst Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 08期

基金：

中国国家自然科学基金;

关键词：

chlorosomes; exciton migration; light harvesting; nanostructures; self-assembly; ULTRAFAST ENERGY-TRANSFER; CROSS-LINKED MICELLES; PHOTOSYNTHETIC BACTERIA; EXCITON MIGRATION; SINGLE-MOLECULE; PURPLE BACTERIA; ANTENNA; SPECTROSCOPY; FLUORESCENCE; POLYMERS;

D O I：

10.1002/anie.201510503

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the first highly efficient artificial light-harvesting systems based on nanocrystals of difluoroboron chromophores to mimic the chlorosomes, one of the most efficient light-harvesting systems found in green photosynthetic bacteria. Uniform nanocrystals with controlled donor/acceptor ratios were prepared by simple coassembly of the donors and acceptors in water. The light-harvesting system funneled the excitation energy collected by a thousand donor chromophores to a single acceptor. The well-defined spatial organization of individual chromophores in the nanocrystals enabled an energy transfer efficiency of 95%, even at a donor/acceptor ratio as high as 1000: 1, and a significant fluorescence of the acceptor was observed up to donor/acceptor ratios of 200 000: 1.

引用

页码：2759 / 2763

页数：5

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