Sensitive and selective dopamine determination in human serum with inkjet printed Nafion/MWCNT chips

Authors

Jie Zhao, University of SydneyFollow
Yinghua Yu, University of WollongongFollow
Bo Weng, University of WollongongFollow
Weimin Zhang, University of SydneyFollow
Andrew T. Harris, University of Sydney
Andrew I. Minett, University of SydneyFollow
Zhilian Yue, University of WollongongFollow
Xu-Feng Huang, University of WollongongFollow
Jun Chen, University of WollongongFollow

RIS ID

87199

Publication Details

Zhao, J., Yu, Y., Weng, B., Zhang, W., Harris, A. T., Minett, A. I., Yue, Z., Huang, X. & Chen, J. (2013). Sensitive and selective dopamine determination in human serum with inkjet printed Nafion/MWCNT chips. Electrochemistry Communications, 37 32-35.

Abstract

An inkjet printed Nafion/MWCNT chip was developed for rapid dopamine determination in undiluted human serum. A well-dispersed Nafion/MWCNT composite ink was investigated with homogeneous double layers which increased the efficiency of dopamine detection, where direct electron exchange was achieved, producing a measurable current change at the underlying sensor electrode. This platform successfully demonstrated direct detection of DA concentrations (0.1 mu M to 10 mu M, R = 0.999) in real human serum samples using DPV and amperometry methods. This direct measurement of DA in serum samples without pretreatment and dilution is reported for the first time in a Nafion/MWCNT system.