Near infrared electrochromic polymers based on phenazine moieties

作者：Esmer Elif Nazli; Tarkuc Simge; Udum Yasemin Arslan^*; Toppare Levent

来源：Materials Chemistry and Physics, 2011, 131(1-2): 519-524.

DOI：10.1016/j.matchemphys.2011.10.014

• Polymers
• Electrochemical techniques
• Electrochemical properties
• Optical properties

New fused-aromatic quinoxaline and thieno[3,4-b]pyrazine based monomers; 10,12-bis(4-hexylthiophen-2-yl)dibenzo[f,h]thieno[3,4-b]quinoxaline (HTBQ) and 10,13-bis(4-hexylthiophen-2-yl)dipyrido[3,2-a:2',3'-c]phenazine (HTPP) were synthesized. Electrochemical polymerization of HTBQ and HTPP were performed in acetonitrile/dichloromethane (ACN/DCM) solution containing LiClO(4)/NaClO(4). Spectroelectrochemical behavior and switching ability of PHTBQ and PHTPP films were investigated by UV-vis spectroscopy. The polymer films showed reversible electrochemical oxidation with high contrast ratios in the NIR region with low switching times. PHTBQ revealed color changes between brick color and green in the reduced and oxidized states. PHTPP changed color from green to gray when the polymer film was switched between its redox states.

• 出版日期2011-12-15