Single molecules probe the polarization dynamics of poly (methyl methacrylate) in external electric field

被引：11

作者：

Chen, Ruiyun ^{[1
]}

Zhang, Guofeng ^{[1
]}

Gao, Yan ^{[1
]}

Xiao, Liantuan ^{[1
]}

Jia, Suotang ^{[1
]}

机构：

[1] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Laser Spect Lab, Taiyuan 030006, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 20期

基金：

对外科技合作项目（国际科技项目）;

关键词：

THIN-FILMS; FLUORESCENCE; INTENSITY;

D O I：

10.1063/1.4717049

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate the electric field (EF) induced polarization dynamics of poly (methyl methacrylate) (PMMA) by observing the fluorescence modulation of embedded non-polar single squaraine-derived rotaxane molecules. It is established that interaction between the molecular energy level and the potential valley formed by surrounding PMMA matrix can be detuned by the EF, which induces the changing of electron transfer rates between them effectively. The EF-induced response time of the fluorescence quenching or enhancement and the fluorescence recovery time reflect the diverse polarization and relaxation dynamics of PMMA. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4717049]

引用

页数：4

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