Following advances in nanoscience, biomimetic chemistry and the diverse applicability of nanoparticles in areas such as electronics, optics, sensing, and biomedical fields, the creation of novel, functional nanomaterials is paramount. Non-pathogenic plant viruses are employed as templates for the synthesis of novel biocomposite nanoparticles. Modification of cowpea mosaic virus (CPMV) using sol-gel deposition of silicon oxide and noncovalent in-situ polymerization of aniline and 4-vinylpyridine have afforded a flexible and facile synthetic route for successfully coated, mono-dispersed biocomposite nanoparticles. TEM, UV/Vis spectroscopy, and Zeta potential measurement were used to evaluate and characterize stability and functionality of the resulting composite nanoparticles.