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Molecules 2015, 20(10), 18585-18596; doi:10.3390/molecules201018585

Green Synthesis of Novel Polyaniline Nanofibers: Application in pH Sensing

BioAnalytical Chemistry and NanoBiomedicine Laboratory, Department of Biochemical Science and Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Kei Saito
Received: 19 June 2015 / Revised: 29 September 2015 / Accepted: 30 September 2015 / Published: 13 October 2015
(This article belongs to the Special Issue Frontier in Green Chemistry Approaches)
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Abstract

An optically active polyaniline nanomaterial (PANI-Nap), doped with (S)-naproxen, was developed and evaluated as a potent pH sensor. We synthesized the material in one pot by the addition of the dopant, (S)-naproxen, prior to polymerization, followed by the addition of the oxidizing agent (ammonium persulfate) that causes polymerization of the aniline. This green chemistry approach allowed us to take only 1 h to produce a water-soluble and stable nanomaterial. UV-visible spectroscopy, fluorescence spectroscopy, FT-IR spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) were used to characterize the designed nanomaterial. This nanomaterial exhibited excellent pH sensing properties and showed long term stability (up to one month) without loss of sensor performance. View Full-Text
Keywords: chiral polyaniline; nanofiber; synthesis; pH sensor; absorption spectroscopy chiral polyaniline; nanofiber; synthesis; pH sensor; absorption spectroscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tanwar, S.; Ho, J.-A.A. Green Synthesis of Novel Polyaniline Nanofibers: Application in pH Sensing. Molecules 2015, 20, 18585-18596.

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