Journal
TALANTA
Volume 115, Issue -, Pages 457-461Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2013.06.002
Keywords
Porphyrin; Fullerenols; M-dinitrobenzene; Polyaniline
Categories
Funding
- National Natural Science Foundation of China [20927004, 20965007, 20775060, 20875077, 21005063]
- Key Laboratory of Polymer Materials of Gansu Province, China
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A novel sensor based on thiol-porphyrin mixed monolayer-tethered polyaniline (PANI) with intercalating fullerenols was applied to sensitively detect m-dinitrobenzene (m-DNB) by differential pulse voltammetry (DPV). The thiolated polyaniline was examined by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrode modification of thiol-porphyrin mixed monolayer-tethered polyaniline with intercalating fullerenols exhibited a higher analytical sensitivity versus that of thiol-porphyrin mixed monolayer-tethered polyaniline, because the fullerenols in mixed monolayer could improve the preconcentration efficiencies of m-DNB. Under optimum conditions, the linear calibration curves ranged from 0.029 to 10,000 nmol L-1 for m-DNB, with a limit of detection (S/N=3) of 9.72 pmol L-1. (C) 2013 Elsevier B.V. All rights reserved.
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