Şahin, ElifÇamurlu, PınarToppare, LeventMercore, Viorela MihaelaCianga, IoanYağcı, Yusuf2024-04-242024-04-242005Şahin, E., Çamurlu, P., Toppare, L., Mercore, V. M., Cianga, I.ve Yağcı, Y. (2005). Synthesis and characterization of thiophene functionalized polystyrene copolymers and their electrochemical properties. Polymer International, 54(12), 1599-1605.0959-81031097-0126https://doi.org/10.1002/pi.1887https://hdl.handle.net/11468/14114https://scijournals.onlinelibrary.wiley.com/doi/10.1002/pi.1887Thiophene functionalized polystyrene samples (TFPS) were synthesized by atom transfer radical polymerization (ATRP) of styrene, followed by Suzuki coupling with 3-thiophene (Th) boronic acid. Conducting graft polymer of TFPS with thiophene was achieved at 1.5 V in tetrabutylammonium tetrafluoroborate/dichloromethane (TBAFB/DM) by electrochemical methods. Spectroelectrochemical analysis of the resulting copolymers [P(TFPS-co-Th)] reflected electronic transitions at 449, 721 and 880 nm, revealing pi - pi* transition, polaron and bipolaron band formation, respectively. We also successfully established the utilization of dual type complementary colored polymer electrochromic devices using P(TFPS-co-Th)/poly(3,4-ethylenedioxythiophene (PEDOT) in sandwich configuration. The switching ability, stability and optical memory of the electrochromic device were investigated by UV-visible spectrophotometry and cyclic voltammetry. Device switches between brown and blue color with a switching time of 1.3 s were prepared with optical contrast (%Delta T) of 25 (c) 2005 Society of Chemical Industry.eninfo:eu-repo/semantics/closedAccessElectrochromic devicesConducting polymersGraft copolymerizationArticle541215991605WOS:0002337560000032-s2.0-2844448314310.1002/pi.1887Q1Q2