Electrochemiluminescent polymer films with a suitable redox "turn-off" absorbance window for remote selective sensing of Hg²⁺.

Electrochemiluminescent polymer films with a suitable redox "turn-off" absorbance window for remote selective sensing of Hg²⁺.
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电化学发光聚合物薄膜,具有合适的氧化还原“关闭”吸光度窗口,用于汞的远程选择性传感

DOI:
10.1039/c3an00545c
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发表时间:
2013
期刊:
The Analyst
影响因子:
--
通讯作者:
M. Schmittel
M. Schmittel
中科院分区:
--
文献类型:
--
作者:
Q. Shu;C. Adam;N. Sojic;M. Schmittel

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提出了一种通过ITO涂层纳米结构光纤束对Hg ~(2+)进行远程检测的电致发光传感方案。它是基于以氮杂冠醚为受体单元的CPDT连接的钌邻菲咯啉配合物(CPDT = 4 H-环戊二烯并[2,1-B:3,4-B′]二噻吩)的电聚合。阳极电势的应用同时诱导电致化学发光(ECL)并关闭聚合物主链在ECL发射波长处的吸光度。因此,电聚合物膜允许ECL光的产生和传输,以协同的方式进行有效的遥感。作为概念验证,通过光纤束的ECL远程演示了Hg 2+的选择性检测。
An electrochemiluminescent sensing scheme is presented for remote detection of Hg2+ through an ITO-coated nanostructured optical fibre bundle. It is based on the electropolymerisation of CPDT-linked ruthenium phenanthroline complexes carrying azacrown ethers as the receptor units (CPDT = 4H-cyclopenta[2,1-b:3,4-b′]dithiophene). The application of an anodic potential simultaneously induces electrogenerated chemiluminescence (ECL) and turns off the absorbance of the polymer backbone at the ECL emission wavelength. Therefore, the electropolymer film allows ECL light generation and transmission for efficient remote sensing in a synergetic way. As a proof of concept, selective detection of Hg2+ was demonstrated remotely by ECL through an optical fibre bundle.
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