Doyranli, CeylanColak, BetulLacinel, GozdeCan, MustafaKoyuncu, Fatma BaycanKoyuncu, Sermet2025-01-272025-01-2720170032-38611873-2291https://doi.org/10.1016/j.polymer.2016.12.016https://hdl.handle.net/20.500.12428/25172In this work, phenanthrene centered donor-acceptor monomer; 5,10-bis(4-hexyl-2-thienyl)phenantro [9,10-c][1,2,5]thiodiazole; MES16 was synthesized and then its electrochromic application of corresponding polymer was carried out. 4,7-di(thiophen-2-yl)-2,1,3-benzothiadiazole (TST) was also synthesized as a standard molecule to determine the effect of the planar phenanthrene center on electrochromic performance. Electrochemical properties were elucidated by cyclic voltammetry and then HOMO-LUMO band gaps were calculated by using their oxidation and reduction onset potentials. Finally, electrochromic properties of poly-(MES16) and poly-(TST) were investigated via spectro-electrochemical measurements. DFT calculations exhibit that poly-(MES16) has a high planarity and an intramolecular charge transfer from the polymer backbone-donor to thiadiazole-acceptor subunit. Because of high solid state it it interactions of the poly-(MES16), a good quality film was obtained corresponding to self assembly property planar phenantrene center. Owing to this property, electrochromic performance of poly-(MES16) such as response time, stability and Delta T% were better than the standard poly-(TST). (C) 2016 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessPhenantreneElectrochromic polymersSpectroelectrochemistryArticle10842343110.1016/j.polymer.2016.12.016Q1WOS:0003923569000462-s2.0-85003989020Q1