In this work, the modification of the surface of polypropylene (PP) with poly(3-hexylthiophene) (P3HT) was carried out using a simple two-step grafting reaction. In the first step, 3-(4-ethenylphenyl) thiophene, synthesized by Suzuki-Miyaura cross coupling, was grafted onto the PP surface using tri-nbutylborane (TBB) and oxygen molecules as the radical initiators. In the second step, oxidative polymerization, using FeCl3 as the oxidizing agent, was applied to the graft polymerization of 3hexylthiophene (3HT) onto PEPT-g-PP. The grafting progress involved crosslinking between 3-(4ethenylphenyl) thiophene and 3HT. Hexane was used as the solvent for oxidative polymerization because of its low polarity and affinity toward PP. The grafting of 3-(4-ethenylphenyl) thiophene and P3HT onto PP was confirmed by UVeVis, Raman, X-ray diffraction (XRD) and transmission electron microscopy-energy dispersive X-ray (TEM EDX) spectroscopy analyses. The conductivity of the P3HT-gPP powder is 0.02 S/cm. On doping the P3HT-g-PP film with I-2 the band gap reduced from 2.40 to 2.16 eV. (C) 2017 Elsevier Ltd. All rights reserved.