C. Constantin, Andra-Elena Bejan, M. Damaceanu
Oct 16, 2019
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0
Influential Citations
18
Citations
Journal
Macromolecules
Abstract
This work focuses on the development of novel six-membered polyimides, with special concern on the effect of the structural variation on their optoelectronic characteristics and electrochromic performances in electrochromic devices. To this aim, a new aromatic diamine incorporating diphenylamine substituted at the nitrogen atom with a 2-(4-methoxyphenyl)-1,3,4-oxadiazole segment was synthesized and fully characterized. This diamine was used in the one-step high-temperature polycondensation reaction with naphthalene- or perylene-based dianhydrides to produce highly conjugated polyimides. To highlight the effect of structural variation in the diamine segment on the main physical properties, {4-[5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl]-phenyl}-bis-(4-amino-phenyl)-amine was reacted with the same dianhydrides to obtain related polyimides. The obtained polymers displayed high thermal stability, up to 423 °C, and could be processed into thin coatings with morphologies contingent on the macromolecular architectu...