Green Synthesis of Novel Polyaniline Nanofibers: Application in pH Sensing
Journal
Molecules
Journal Volume
20
Journal Issue
10
Pages
18585-18596
ISSN
1420-3049
Date Issued
2015-10-13
Author(s)
Tanwar, S.
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.
Subjects
Absorption spectroscopy
Chiral polyaniline
Nanofiber
PH sensor
Synthesis
SDGs
Publisher
MDPI AG
Type
journal article