Abstract
The objective of this paper is to give information about the optical and electrical characteristics measured of the CS–GO PNCs (chitosan-graphene oxide polymer nanocomposites), which is novel, biodegradable and biocompatible in nature. These nanocomposites have been synthesized by simple solution mixing technique trailed by ultrasonication treatment. The variation of GO nano-filler has shown a direct impact on the optical and electrical properties of the nanocomposite. According to the observations, optical absorption edge has a slightly shift towards the longer wavelength; while the optical band gap of the nanocomposite is constantly reduced on increasing the wt% of GO. In optical properties, the dielectric constant, dissipation factor and electrical conductivity have been found to increase with increasing wt% of GO in the PNC. Further, a shift in the relaxation frequency, at which dipole get relaxed indicating the interaction between the graphene and chitosan, has also been observed for different GO wt%. The conductivity of nanocomposites were increased to almost 10 times on increasing 2 wt% of GO. Taking into account the outcomes accomplished, the use of CS–GO PNC is reasonable for forthcoming advancement of optical sensors, and might be demonstrated as an expected possibility for the electrical or optoelectronic devices working at high frequencies.
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Acknowledgements
Authors are indebted to DST, Govt. of India for providing the experimental facilities through the CURIE project given to the Banasthali Vidyapith. One of the authors (P. A. Alvi) is heartily acknowledges to UGC-DAE Kolkata center via supportive project (File No: UGC-DAE-CSR-KC/CRS/19/RC14/0992/1027).
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Dhayal, V., Hashmi, S.Z., Kumar, U. et al. Optical and electrical properties of biocompatible and novel (CS–GO) polymer nanocomposites. Opt Quant Electron 53, 53 (2021). https://doi.org/10.1007/s11082-020-02723-9
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DOI: https://doi.org/10.1007/s11082-020-02723-9