Polyhydroquione (PHQ) is a polymer that only contains quinone and hydroquinone groups in its main chain.PHQ retain the characters of quinones
such as redox activity and reversibility consisting of two electron transfer.Compared with monomer
the polymer PHQ has shown improved heat-resistance.As a redox polymer
PHQ has a low redox potential and a fast electron transfer rate
and has been used as an electron mediator for bio-sensors and as an antioxidant or a redox polymer agent since it can capture radicals quickly.The progress on the preparation of PHQ
and on the study of their structure and redox properties and applications is summarized.