Collective Fluorescence Blinking in Linear J-Aggregates Assisted by Long-Distance Exciton Migration

被引：126

作者：

Lin, Hongzhen ^{[1
]}

Camacho, Rafael ^{[1
]}

Tian, Yuxi ^{[1
]}

Kaiser, Theo E. ^{[2
,3
]}

Wuerthner, Frank ^{[2
,3
]}

Scheblykin, Ivan G. ^{[1
]}

机构：

[1] Lund Univ, S-22100 Lund, Sweden

[2] Univ Wurzburg, Inst Organ Chem, D-97074 Wurzburg, Germany

[3] Univ Wurzburg, Rontgen Res Ctr Complex Mat Syst, D-97074 Wurzburg, Germany

来源：

NANO LETTERS | 2010年 / 10卷 / 02期

基金：

瑞典研究理事会;

关键词：

Single molecule spectroscopy; fluorescence quantum yield; fluorescence brightness; energy migration; J-aggregate; ELECTRONIC-ENERGY TRANSFER; SINGLE MOLECULES; POLYMER; SPECTROSCOPY; DEPENDENCE; DYNAMICS;

D O I：

10.1021/nl9036559

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fluorescence blinking corresponding to collective quenching of up to 100 dye monomers is reported for individual J-aggregates of a perylene bisimide (PBI) dye. This implies an exciton diffusion length up to 70 nm in these one-dimensional assemblies. The number of quenched monomers was directly measured by comparing the fluorescence brightness of the J-aggregates with that of noncoupled PBI molecules. This brightness analysis technique is useful for unraveling photophysical parameters of any individual fluorescent nanosystem.

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页码：620 / 626

页数：7

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