Electrochemiluminescence on-a-chip: Towards a hand-held electrically powered optofluidic source

TALANTA

卷:129

Article

Meance, Sebastien¹  Gamby, Jean^2,3  Faure, Mathilde^2,3  Kou, Qingli^4,5  Haghiri-Gosnet, Anne-Marie¹ 

[1] CNRS, Lab Photon & Nanostruct, UPR20, F-91460 Marcoussis, France

[2] CNRS, UMR 8235, LISE, F-75005 Paris, France

[3] Sorbonne Univ, Univ Paris 06, UMR 8235, Lab Interfaces & Syst Electrochim, F-75005 Paris, France

[4] Univ Paris 11, Inst Sci Mol ISMO, UMR 8214, F-91405 Orsay, France

[5] CNRS, UMR 8214, ISMO, F-91405 Orsay, France

关键词: Optofluidics;    Electrochemiluminescence;    9,10-diphenylanthracene;    Cyclic voltammetry;   

DOI  :  10.1016/j.talanta.2014.05.026

来源: Elsevier

【 摘 要 】

We report a microfluidic platform that integrates several parallel optical sources based on electrochemiluminescence (ECL) of 9,10-diphenylanthracene (DPA) as luminophore agent. The annihilation of DPA radicals provides a low wavelength emission at lambda=430 nm in the blue-visible range. By varying the distance between electrodes for each ECL integrated source, this glass/PDMS/glass platform enabled a systematic investigation of the main electrochemical parameters involved in ECL These parameters have been studied either in a static mode or in a dynamic one. Even at slow flow rate (similar to 2 mu l s(-1)), the renewal of electroactive species could be easily promoted inside the microfluidic channel which gives rise to a stable optical intensity for several minutes. Compared with traditional optically pumped dye sources, this microfluidic system demonstrates that ECL can be easily implemented on chip for producing much compact optofluidic sources. Such simply electrically powered system-on-chip would surely encourage the future of hand-held mu TAS devices with integrated fast detection and embedded electronics. (C) 2014 Elsevier B.V. All rights reserved.

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