A　methacryl　ethyl-functionalized　soluble　polypyrrole　was　designed　and　prepared　by　chemical　oxidative　polymerization　for　rapid　fabrication　of　high-aspect-ratio　pillar　arrays.　The　chemical　structures　of　the　pyrrole　derivative　and　the　corresponding　polypyrrole　were　characterized　by　FFIR　and　H-1　NMR　The　polypyrrole　with　a　weight　average　molecular　weight　(M-w)　of　7376　exhibits　good　solubility　in　several　organic　solvents,　favorable　thin　film　forming　ability　and　two　UV-Vis　absorption　peaks　at　280　and　380　nm　in　tetrahydrofuran　solution.　The　dilute　chloroform　solution　of　the　polypyrrole　is　a　Newtonian　fluid　with　a　low　viscosity　and　shows　a　significant　increase　in　the　electrical　conductivity　with　increasing　the　polypyrrole　content.　Moreover,　an　insulating　photoresist　can　be　transformed　into　a　conductive　photoresist　by　doping　this　polypyrrole.　Electrowetting　driven　structure　formation　experiments　have　confirmed　that　the　conductive　photoresist　can　fulfill　rapid　fabrication　of　higher-aspect-ratio　pillar　arrays　compared　with　the　insulating　photoresist.　(C)　2016　Elsevier　B.V.　All　rights　reserved.