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Electrochromism and Nonvolatile Memory Device Derived from Triphenylamine‐Based Polyimides with Pendant Viologen Units
Author(s) -
Yen HungJu,
Tsai ChiaLiang,
Chen ShihHan,
Liou GueySheng
Publication year - 2017
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201600715
Subject(s) - triphenylamine , electrochromism , viologen , magenta , materials science , polyimide , cyan , ambipolar diffusion , polymer , polymer chemistry , photochemistry , electrochemistry , transmittance , optoelectronics , nanotechnology , chemistry , electrode , optics , layer (electronics) , physics , plasma , quantum mechanics , inkwell , composite material
Three novel solution‐processable polyimides containing triphenylamine and pendant viologen moieties are prepared from the newly synthesized diamine and three commercially available dianhydrides. The thermally stable polyimide with strong donor–acceptor charge‐transfer possesses write‐once read‐many‐times memory behavior with excellent operation stability. The obtained multicolored electrochromic polymer films reveal ambipolar electrochemical behavior with high optical transmittance contrast of coloration changed from transmissive neutral state to the cyan/magenta/yellow redox states, implying great potential for application in smart window and displays.