Synthesis of Multifunctional Poly (Thiophene‐Co‐Pyrrole)/Boehmite Nanocomposites for Optoelectronic, Dielectric, Photocatalytic, and Antibacterial Applications

This study presents the in situ copolymerization of thiophene and pyrrole with varying nano‐boehmite (Bh) contents to synthesize (PTH‐ co ‐PPY/Bh) nanocomposites (NCs) for potential photocatalytic, antimicrobial activity, and optoelectronic applications. Structural, morphological, and thermal properties were systematically studied using multiple techniques. Fourier‐transform infrared spectroscopy validated the successful integration of Bh into the copolymer matrix. Ultraviolet–visible spectroscopy showed enhanced absorbance and a reduced optical bandgap, reaching its minimum at a Bh loading of five weight percent. X‐ray diffraction analysis revealed a reduction in amorphous content. High‐resolution transmission electron microscopy and field‐emission scanning electron microscopy confirmed the presence of well‐dispersed, spherical Bh nanofillers within the matrix. Thermal analysis indicated improved stability and an increased glass transition temperature in the NC compared to the pure copolymer. Dielectric measurements showed improved permittivity and conductivity with increasing Bh content and temperature. The reduced activation energy estimated by the Arrhenius equation indicated enhanced charge transport. Photocatalytic activity, evaluated through methylene blue degradation, improved with Bh loading due to greater light absorption and reactive surface area. Antibacterial studies against Escherichia coli showed increased inhibition with higher Bh content. Overall, the multifunctional properties of copolymer/Bh NCs highlight their strong potential for future applications in optoelectronics and environmental remediation technologies.