Photoswitchable Intramolecular H-Stacking of Perylenebisimide

被引：87

作者：

Wang, Jiaobing ^{[1
]}

Kulago, Artem ^{[1
]}

Browne, Wesley R. ^{[1
]}

Feringa, Ben L. ^{[1
]}

机构：

[1] Univ Groningen, Stratingh Inst Chem, Ctr Syst Chem, NL-9747 AG Groningen, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 12期

基金：

欧洲研究理事会;

关键词：

ELECTRON-TRANSFER; BISIMIDE DYES; DRIVEN; FLUORESCENCE; CHARGE; ORGANIZATION; MOLECULES;

D O I：

10.1021/ja910829b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dynamic control over the formation of H- or J-type aggregates of chromophores is of fundamental importance for developing responsive organic optoelectronic materials. In this study, the first example of photoswitching between a nonstacked and an intramolecularly H-stacked arrangement of perylenebisimides (PBI) is demonstrated. The system is composed of a central switching unit (overcrowded alkene) tethered to two PBI chromophores. cis-trans isomerization of the switching unit, induced by alternate irradiation at 312 and 365 nm, can drive two PBI chromophores reversibly between an intramolecularly "aggregated" and "nonaggregated" state. Distinct changes in UV-vis absorption and fluorescence spectra are observed following photoisomerization. This approach allows for efficient control of intramolecular H-stack formation with no significant intermolecular interactions spanning over at least 4 orders of magnitude of concentration (from 10(-8) to 10(-4) M) and a range of solvents and temperatures.

引用

页码：4191 / 4196

页数：6

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