Formation of Conjugated Polymers Inside Nanospace

E. Kim, H. Shin, B. Kim, C. Park, T. Park
Yonsei University, KR

Keywords: conjugated polymers, solution cast polymerization, nanospace


Using in situ solid state polymerization (isSSP) method, CPs were grown inside nanospace when the interplane distance between halogenated monomers were shorter than the average Vander Waals distance. As a highly hole conductive material, CPs grown inside nanopores of TiO¬2 could replace many hole conductors in organic photovoltaic cells. The specific stacking structure of monomer crystals inside nanospace of TiO¬2 allowed monomers to undergo a self-coupling reaction, leading to the formation of highly conductive CPs. This method was applied to the preparation of a CP based dye sensitized photovoltaic, which improved electrode/HTM interfacial properties originated from the close contact between the electrode and HTM. Importantly, this approach allowed deep penetration of CPs into a thick photoanode film, resulting in efficient dye adsorption and high photo conversion performance.