Abstract
Supported tritonX100 polyaniline nano-porous electrically active film has been fabricated successfully onto indium-tin-oxide conducting probe using electrochemical polymerization process. The doping of TX-100 in the polymeric network of PANI was suggested using cyclic voltammeter, UV-vis spectroscopy, and Fourier Transform Infrared spectroscopy. The change in the surface morphology of PANI thin film due to incorporation of tritonX-100 was investigated using Atomic Forced Microscopy and porosity has been confirmed scanning electron microscopy, respectively. The surface morphology, uniformly disperse hexagonal close packing of TX-100 in PANI matrices due to the incorporation of TX-100 in polymeric network of PANI was confirmed by Atomic Force Microscopy. The electrical conductivity of PANI-TX-100 increases from 1.06 x 10-2 S/cm-1 to 4.95 x 10-2 S/cm-1 as the amount of TX-100 increases during the polymerization. The change in the morphology and electrical conductivity of PANI due to incorporation of TX-100 prove as a promising material for the sensing application.
Highlights
The unique optical and electrical properties of conducting polymer make them a novel organic semi conducting material with great promise of their wide range of potential application includes storage batteries [1,2], electrochromic devices [3,4], light emitting diodes [5], non linear optics [6], and corrosion inhibitors [7] and sensors [8,9,10,11]
The intensity of this absorption band is increases on further increasing the amount of TX-100. This shows that TX-100 stabilized the quinoid ring system of PANI and PANI-TX-100 is found in the doped state
Electrochemical polymerization process was used for stable thin film deposition of TX-100 with PANI
Summary
The unique optical and electrical properties of conducting polymer make them a novel organic semi conducting material with great promise of their wide range of potential application includes storage batteries [1,2], electrochromic devices [3,4], light emitting diodes [5], non linear optics [6], and corrosion inhibitors [7] and sensors [8,9,10,11]. The difficult processability and poor thermal stability of PANI has to overcome for the successful application in sensors. Better processability may be achieved either by the synthesis on PANI in nano-micro scale particle, which are easier to disperse in a polymer matrix or by using an appropriate emulsifier which enhance the optical and electrical properties of PANI. Surfactants used as additives during the polymerization of aniline to effect the locus polymerization by using the emulsion [21,22] or inverse emulsion [23,24,25] pathways, and to modify the molecular and supermolecular structure of the resulting PANI, and to improve the properties of the PANI with respect to conductivity, stability, solubility in organic solvents, and processibility. Polymeric nanostructures are formed on surfaces due to combination of interfacial, intra- and intermolecular forces [27]
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