Polypyrrole–ZnO nanohybrids: effect of CSA doping on structure, morphology and optoelectronic properties

M A Chougule,Shashwati Sen,G D Khuspe,V B Patil

doi:10.1007/s13204-012-0149-x

Abstract

Polypyrrole–ZnO (PPy–ZnO) nanohybrid was prepared from PPy and ZnO nanoparticles (NPs). Nanohybrids of PPy–ZnO were doped with camphor sulfonic acid (CSA) with different weight ratios (10–50 %). The CSA-doped nanohybrids obtained were characterized by X-ray diffraction, FTIR, field emission SEM, UV–vis spectroscopy and electrical transport method. Structural investigations using X-ray diffraction shows new peaks appeared at 15.44° and 17.61° in the XRD pattern of CSA-doped PPy–ZnO nanohybrids belong to CSA. The FTIR spectra confirmed the strong interaction between the CSA and PPy–ZnO nanohybrids. The UV–visible spectrums revealed the enhancement of doping level for the 30 % CSA-doped PPy–ZnO nanohybrid film which is assigned to the existence of greater number of charges on the polymer backbone. The room temperature dc electrical conductivity of CSA-doped PPy–ZnO nanohybrids were observed to depend on the CSA doping and the morphology.

Highlights

In recent years, intrinsic conducting polymers with conjugated double bonds have been attracted much attention asS
We report the synthesis of camphor sulfonic acid (CSA)-doped PPy–ZnO nanohybrid films by spin coating technique and study of their microstructural, morphological, optical and charge transport properties
The CSA-doped PPy–ZnO nanohybrid films were successively prepared by spin coating technique on glass substrates

Summary

Introduction

S. Sen Crystal Technology Section, Technical Physics Division, BARC, Mumbai, India advanced materials. Sen Crystal Technology Section, Technical Physics Division, BARC, Mumbai, India advanced materials Among those conducting polymers, polypyrrole (PPy) is especially promising for commercial applications because of its good environmental stability, facile synthesis, and higher conductivity than many other conducting polymers. PPy coatings have an excellent thermal stability and are good candidate for use in carbon composites (Iroh and Williams 1999). The electrochemical process parameters affecting the properties of the PPy coatings are investigated (Su and Iroh 1998). PPy can be prepared by either an oxidatively chemical or electrochemical polymerization of pyrrole. Synthetically conductive PPy is insoluble and infusible, which restricts it is processing and applications in other fields

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Conclusion