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A facile approach to prepare porous polyamide films with enhanced electrochromic performance


Novel electroactive triphenylamine-based polyamide (PA) films with purproseful porous structure have been designed and prepared by a simple route. Polymer thin films containing well dispersed electrolyte salts were prepared firstly, then channels of porous could be generated within the polymer film by washing salts out. With the help of the porous channels, the diffusion rate between electroactive species and electrolyte during electrochemical process could be effectively increased. Consequently, the driven potential and electrochromic response time can be efficiently improved through this approach. Novel porous PA films with optimal results both in optical transparency and electrochemcial properties could be readily obtained by choosing a common used supporting electrolyte TBABF4 as salt in this study. When the PA films containing un-washed TBABF4 salt were further assembled into electrochromic devices (ECDs), the salt then could be leached out during electrochemical redox switching process to form porous film structure and also serves as supporting electrolyte in ECDs simultaneously. Therefore, EC performance such as driven potential and response time could be enhanced obviously by this simplified fabrication procedure of ECDs.

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Publication details

The article was received on 13 Jun 2018, accepted on 08 Aug 2018 and first published on 08 Aug 2018

Article type: Paper
DOI: 10.1039/C8NR04823A
Citation: Nanoscale, 2018, Accepted Manuscript
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    A facile approach to prepare porous polyamide films with enhanced electrochromic performance

    B. Pan, W. Chen, S. Hsiao and G. Liou, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR04823A

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