Yaw-Terng Chern

1. Introduction Electrochromic materials have attracted great attention due to their reversible optical change properties [1,2]. It has been demonstrated that organic conjugated polymers and viologens used as electrochromic materials have more advantages than inorganic compounds, including high CE, fast switching speed, easy of large-area processing, and easy color tuning through chemical modification [3,4,5,6,7,8,9].

Concept of triphenylamine side chains with four electroactive nitrogen centers toward record-high stable electrochromic polyamides† Addressing the challenge of long-term electrochromic stability for polymer-based materials is the fundamental key to practical application. To date, numerous examples of electrochromic triarylamine-based polymers have been reported. However, the structure-electrochromic stability relationships are still poorly understood and mostly unexplored.