Surface plasmon-coupled ultraviolet emission of 2,5-diphenyl-1,3,4-oxadiazole

被引：36

作者：

Malicka, J ^{[1
]}

Gryczynski, I ^{[1
]}

Gryczynski, Z ^{[1
]}

Lakowicz, JR ^{[1
]}

机构：

[1] Univ Maryland, Ctr Fluorescence Spect, Dept Biochem & Mol Biol, Baltimore, MD 21201 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 50期

关键词：

D O I：

10.1021/jp047136u

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：

We studied surface plasmon-coupled emission (SPCE) of 2,5-diphenyl-1,3,4-oxadiazole (PPD) using a 20 nm aluminum film deposited on a quartz substrate. The directional SPCE UV fluorescence occurs within a narrow angle at 57degrees from the normal to the coupling hemicylindrical prism. This radiation is almost completely p-polarized, consistent with its origin from surface plasmons. These surface plasmons are induced by excited PPD molecules. The coupling of excited fluorophore dipoles with the aluminum is highly efficient, exceeding 50%. Different fluorescence emission wavelengths are emitted at slightly different angles on the prism, providing intrinsic spectral resolution. SPCE fluorescence on thin aluminum films can be used with many UV absorbing and emitting fluorophores.

引用

页码：19114 / 19118

页数：5

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