Preparation and optimization of grafted hydroxyethyl cellulose, polypyrrole, and nitrogen-doped carbon quantum dots bionanocomposites for electrical, optical, and photoluminescence multicoloring applications

Abstract

The major objective of this research revolves around the integration of polypyrrole (PPy) and various concentrations of nitrogen-doped carbon quantum dots (N-CQDs) into a polyacrylamide (PAm)-grafted hydroxyethyl cellulose (gHEC) to produce gHEC@PPy@N-CQDs bionanocomposites that possess environmentally sustainable properties. The intercalation and uniform distribution of N-CQDs inside the gHEC@PPy matrix have been demonstrated through the analysis of data obtained from X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The samples underwent analysis using thermogravimetric analysis (TGA and DTG) as well as scanning and transmission electron microscopy. The improved dispersion of PPy and 4 % N-CQDs inside the matrix led to enhanced electrical characteristics of the graphene-hybridized metal bionanocomposite. The peculiar optical and photoluminescence emission observed in the gHEC@PPy@N-CQDs bionanocomposites can be attributed to the surface groups of N-CQDs and the transition between CN and CN. This hypothesis suggests that these factors play a significant role in determining the observed optical properties. The main goal is to identify distinctive and captivating applications for these bionanocomposites across several domains, including electronics, optical and light-emitting devices with a broad spectrum of colors, and bioimaging applications.