UV Fluorescence Lifetime Modification by Aluminum Nanoapertures

被引：45

作者：

Jiao, Xiaojin ^{[1
]}

Peterson, Eric M. ^{[2
]}

Harris, Joel M. ^{[2
]}

Blair, Steve ^{[1
]}

机构：

[1] Univ Utah, Dept Elect & Comp Engn, Salt Lake City, UT 84112 USA

[2] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA

来源：

ACS PHOTONICS | 2014年 / 1卷 / 12期

基金：

美国国家科学基金会;

关键词：

plasmonics; ultraviolet; fluorescence lifetime; SINGLE-MOLECULE FLUORESCENCE; ENHANCED FLUORESCENCE; INTRINSIC FLUORESCENCE; PLASMON RESONANCE; ULTRAVIOLET; EMISSION; SPECTROSCOPY; DNA;

D O I：

10.1021/ph500267n

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report excited-state lifetime modification of diffusing molecules by Al nanoapertures in the UV. Lifetime reductions of similar to 3.5X have been observed for the high quantum yield laser dye p-terphenyl in a 60 nm diameter aperture. The lifetime reduction is smaller for the low quantum yield molecule tryptophan, for which a maximum reduction of similar to 1.7 is observed. Lifetime reduction as a function of aperture size and native quantum yield is accurately predicted by simulation. Simulation further predicts greater net fluorescence enhancement for tryptophan compared to p-terphenyl, which is consistent with the expectation that low quantum yield emitters experience greater enhancement in the effective quantum yield.

引用

页码：1270 / 1277

页数：8

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