Color tuning for black-to-transmissive conjugated copolymer with excellent electrochromic properties via electrochemical copolymerization of two donor-acceptor type monomers

Black‐to‐Transmissive Electrochromism in π‐Conjugated Polymer‐Based Materials and Devices

“…After that, following the similar design idea, a number of new electropolymerized black-to-transmissive ECPs (P10-P13) have been developed through the optimization of electrochemical copolymerization ratio of two monomers. [37][38][39] The repeated unit structures of these conjugated copolymers are shown in Figure 3b. Compared with the first electropolymerized black conjugated polymer, the new emerged conjugated copolymers reveal the improved EC performances, including higher optical contrast and faster switching time (See Table 1).…”

Printing dynamic color palettes and layered textures through modeling-guided stacking of electrochromic polymers

“…The triple-layer electrochromic film shows an optical contrast of 38% at 555 nm between the colored and bleached states, with a switching time of 9 s, which is competitive amongst the reported neutral grey polymers. [26][27][28][29][30][31][32] After establishing the ECP stacking and modeling, we studied the impact of the stacking sequence on minimizing the intermediate colors. Having intermediate colors is a common issue in the reported co-processed electrochromic polymers (ECPs), due to the disparity in electrochemical onset potentials of the constituent ECPs.…”

From gas separation to ion transport in the cavity of hyperbranched polyamides based on triptycene aimed for electrochromic and memory devices

“…Several researchers such as Liou, Hsiao, Liao and Sun have reported a variety of EC HPPs and devices with excellent properties. 5–9 Liou prepared PAs with high contrast transmittance from colorless to black between bleached and colored states when oxidized. 13 Sun synthesized PAs with fast response; 14 Liaw prepared PIs with strong optical contrast.…”