Efficient Fluorescence "Turn-On" Sensing of Dissolved Oxygen by Electrochemical Switching

被引：35

作者：

Shin, Ik-Soo ^{[2
]}

Hirsch, Thomas ^{[1
]}

Ehrl, Benno ^{[1
]}

Jang, Dong-Hak ^{[2
]}

Wolfbeis, Otto S. ^{[1
]}

Hong, Jong-In ^{[2
]}

机构：

[1] Univ Regensburg, Inst Analyt Chem Chemo & Biosensors, D-93053 Regensburg, Germany

[2] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea

来源：

ANALYTICAL CHEMISTRY | 2012年 / 84卷 / 21期

关键词：

PERYLENE TETRACARBOXYLIC DIIMIDE; OPTICAL CHEMICAL SENSORS; HIGH-STABILITY; DYE;

D O I：

10.1021/ac301830a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report on a novel method for sensing oxygen that is based on the use of a perylene diimide dye (1) which is electrochemically reduced to its nonfluorescent dianion form (1(2-)) In the presence of oxygen, the dianion is oxidized to its initial form via an electron-transfer reaction with oxygen upon which fluorescence is recovered. As a result, the fluorescence intensity of the dianion solution increases upon the addition of oxygen gas. Results demonstrate that high sensitivity is obtained, and the emission intensity shows a linear correlation with oxygen content (0.0-4.0% v/v) at ambient barometric pressure. In addition, using electrochemical reduction, oxygen determination becomes regenerative, and no significant degradation is observed over several turnovers. The limit of detection is 0.4% oxygen in argon gas.

引用

页码：9163 / 9168

页数：6