A new strategy is proposed to obtain pore functionalized honeycomb-patterned porous films by in-situ polymerization during breath figure process. The polystyrene with benzoyl peroxide mixture in chloroform was casted under reactive vapor conditions, generated by pumping air through aqueous aniline hydrochloride solution. The resulting films showed honeycomb patterned porous morphology with polyaniline functionalized pores. The formation of polyaniline was confirmed from color, conductivity, and UV-Visible studies. The strategy can be extended to obtain various pore functionalized films by choosing one reactant in polymer solution and other in humid vapors. (C) 2017 Elsevier Ltd. All rights reserved.