Synthesis, photophysical, and electrochromic properties of new triarylamino-containing polyphenylquinoxalines |
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Authors: | M L Keshtov M I Buzin P V Petrovskii E E Makhaeva V S Kochurov D V Marochkin A R Khokhlov |
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Institution: | 1. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia 2. Faculty of Chemistry, Moscow State University, Moscow, 119991, Russia
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Abstract: | New triarylamino-containing bis(α-diketones) are synthesized. On the basis of these compounds, a series of electrochromic organosoluble polyphenylquinoxalines with glass-transition temperatures of 224–315°C are prepared. All polymers intensively fluoresce in solutions and thin films with maxima at 535–600 and 530–560 nm, respectively. Cyclic voltammograms of polyphenylquinoxalines exhibit reversible redox properties in the range E 1/2 = 0.92–1.25 eV. It is shown that, after 15 cycles, all polymers preserve high stability and reversibility of electrochromic characteristics, but their color changes from yellow (neutral form) to wine red (oxidized form). |
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