Reduced photobleaching of chromophores close to a metal surface

被引：27

作者：

Vasilev, K ^{[1
]}

Stefani, FD ^{[1
]}

Jacobsen, V ^{[1
]}

Knoll, W ^{[1
]}

Kreiter, M ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2004年 / 120卷 / 14期

关键词：

D O I：

10.1063/1.1665719

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 photobleaching of chromophores in front of a metal film is measured by recording the emitted fluorescence intensity from an ensemble of chromophores as a function of time. A strong dependence of the photostability on the distance from the metal surface is found. The experimental data are well described in a classical electromagnetic model with the additional assumption that photobleaching occurs at a constant rate from the excited state. The metal interface influences the photostability of the chromophores in two ways, first by altering the excitation rate by local enhancement of the electromagnetic field and second by altering the electromagnetic decay rate. (C) 2004 American Institute of Physics.

引用

页码：6701 / 6704

页数：4

共 12 条

[1] NOVEL ASPECTS OF FLUORESCENCE LIFETIME FOR MOLECULES POSITIONED CLOSE TO METAL-SURFACES [J].