The current study aims to explore the anti-corrosion performance of Poly [2-amino-4(1-benzyl-1H-indol-3-yl) thiophene -3carbonitrile)] (PABITC) on C-steel in in 0.50 M H2SO4 using weight loss and potentiodynamic polarization measurements (PDP).. PABITC was synthesized with different molecular weights 882, 921, 1388, 15788 g/mol using APS as an oxidizing agent.The chemical structure of the polymer ...