Fabrication of a Colorimetric Electrochemiluminescence Sensor

A colorimetric electrochemiluminescence (ECL) sensor was fabricated for the first time, based on a dual-color system including a strong red Ru(bpy)3 2+ ECL and a green reference light from a light emitting diode. Traditional ECL intensity information can be easily transformed into a color variation...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2009-01, Vol.81 (2), p.830-833
Main Authors: Lin, Zhi-jie, Chen, Xiao-mei, Jia, Tian-tian, Wang, Xu-dong, Xie, Zhao-xiong, Oyama, Munetaka, Chen, Xi
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemical compounds
Chemistry
Color
Electrochemistry
Electroluminescence
Exact sciences and technology
General and physical chemistry
General, instrumentation
Light emitting diodes
Photoelectrochemistry. Electrochemiluminescence
Sensors
Spectrometric and optical methods
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Summary:A colorimetric electrochemiluminescence (ECL) sensor was fabricated for the first time, based on a dual-color system including a strong red Ru(bpy)3 2+ ECL and a green reference light from a light emitting diode. Traditional ECL intensity information can be easily transformed into a color variation with this sensor, and the color variation can be directly monitored using the naked eye or a commercial CCD camera. The sensor has been successfully used to determine the concentration of tripropylamine, proline (enhancing system), and dopamine (quenching system). The results indicated that the color variation obtained corresponded to the concentration of target analytes. This sensor has potential application in rapid and semiquantitative ECL analysis.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac8020054