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Electrochromism of ICP
and electrochromic devices




  Intrinsically conducting polymers due to their conjugated and mobile electronic system are typically able to reversibly change their colors and optical density in response to applied electrochemical potentials. I.e. these polymers belong to the well-known class of practically important electrochromic materials and in some cases are the serious alternative to inorganic electrochromic compounds [1]. Working in this direction we have developed the new complementary red–green–blue electrochromic device [2]. The idea of this device in based on summarizing spectroelectrochemistry of poly(3-methylthiophene)–polyaniline couple:

Poly(3-methylthiophene) (P3MT)











Polyaniline (PANI)



  Each polymer demonstrates own color transition accordingly to the changes of the applied potential. But these transitions are limited only by two (P3MT) or three (PANI) colors. To widen their colors we placed P3MT and PANI layers at parallel electrodes.



  This approach allowed us to develop a device with a wide color range: red-blue-green.



1. P. Monk, R. Mortimer, D. Rosseinsky, Electrochromism and Electrochromic Devices, Cambridge University Press, 2007

2. Poly(3-methylthiophene)–polyaniline couple spectroelectrochemistry revisited for the complementary red–green–blue electrochromic device, D. Sydorov, Ie. Duboriz, A. Pud, Electrochimica Acta, 2013, 106, 114–120 DOI: 10.1016/j.electacta.2013.05.071.
intrinsically conducting polymers, ICP, electrochromic devices, nanocomposites, ECD, gas sensor, photovoltaic, electrochemical simulation and regulation of redox-processes, poly(3-methylthiophene), P3MT, poly(3-alkylthiophene), P3HT, PEDOT:PSS, PEDOT