Electrochromic materials as a kind of new functional materials of green environmental protection

energy saving and low carbon

can be widely used in multitudinous fields as display devices

smart windows

energy-efficient buildings

national defensive military camouflage etc

attract people's great attentions. This paper presents a review of the latest research progress of electrochromic materials based on polyaniline. It introduces in detail the synthesis and current research of aniline and substituted aniline homopolymer

aniline and substituted aniline copolymer

hybrid materials based on polyaniline derivatives and electrochromic materials with oligoaniline side chains. Especially from the molecular structure

dissolution and electrochromic properties

the authors point out the existing problems of the current electrochromic materials based on polyaniline

give the future directions for improvement.