title: A dual-polymer electrochromic device with high coloration efficiency and fast response time: poly(3,4-(1,4-butylene-(2-ene)dioxy)thiophene)-polyaniline ECD.
abstract: A new dual-polymer electrochromic device (ECD) composed of poly(3,4-(1,4-butylene-(2-ene)dioxy)thiophene) (PBueDOT) and polyaniline (PANI) with a hydrophobic molten salt electrolyte has been developed. To build this system, an alkylenedioxy ring in the BueDOT backbone was expanded to include a strongly electron-donating alkylenedioxy bridge, and the thickness and surface morphology of the corresponding PBueDOT film were controlled systematically. Not only the dual-electrochromic-polymer-electrode system, but also the expanded alkylenedioxy ring in the BueDOT backbone, synergistically improved the electrochromic performance. From the coloration efficiency (CE) value calculations, we found that the CE was enhanced up to 930 cm(2) C(-1). Furthermore, these ECDs showed an extremely fast response time of less than 80 ms.
authors.affiliation: Center for Intelligent Nano-Bio Materials (CINBM), Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 120-750, Korea.
authors.forename: Joo-Hee
authors.initials: JH
authors.lastname: Kang
authors.forename: Zhaochao
authors.initials: Z
authors.lastname: Xu
authors.forename: Seung-Min
authors.initials: SM
authors.lastname: Paek
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Hwang
authors.forename: Juyoung
authors.initials: J
authors.lastname: Yoon
authors.forename: Jin-Ho
authors.initials: JH
authors.lastname: Choy
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D003116:Color; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D011108:Polymers / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D011108:Polymers; D013876:Thiophenes; C416807:polyaniline