摘要 |
Disclosed is a transparent electrochromic polyimide, polymerized of a diamine and a cycloaliphatic dianhydride. The diamine includes a diamino triphenylamine having the formula: wherein R1 consists of hydrogen, halogen, C1-6 alkyl group, C1-6 alkoxy group, or and R2 consists of hydrogen, halogen, C1-6 alkyl group, or C1-6 alkoxy group. The cycloaliphatic dianhydride includes |