BLACK SOLUBLE CONJUGATED POLYMERS, POSSESSING HIGH CONDUCTING ABILITY IN OXIDISED STATE Russian patent published in 2013 - IPC C08G61/12 C08L65/00 C09K9/02 

FIELD: chemistry.

SUBSTANCE: invention relates to donor-acceptor conjugated polymer (DA-CP) and method of its obtaining. DA-CP polymer has strong absorption of visual light in one redox state and in form of thin film is black for human eye perception. Polymer contains acceptor repeat units (A), which contain at least one derivative of thiadiazole chinoxaline, chinoxaline, thienothiadiazole, thienopyrazine, pyrazine chinoxaline, benzobisthiadiazole, thiadiazole thienopyrazine or any their combination, located among multitude of repeating donor units (D). Units (D) contain at least one 3,4-bis(alkoxy)thiophene, at least one bis-alkyloxy-substituted 3,4-alkylene dioxythiophene or any their combination. Said donor repeat links are present in form of poludisperse sequences between acceptor repeat units, with the shortest sequence containing at least two donor repeat units. Method of DA-CP polymer obtaining includes: providing mixture for polymerisation, which contains a set of at least one DA-oligomer, containing at least one internal acceptor repeat unit, and chemical polymerisation of said mixture.

EFFECT: polymer is electrocromic and can be used as material for fast and reversible colour change, it is saturated black in one redox state, and in other redox state it can be coloured or be highly transparent in the entire visible range, which extends possibilities of its application.

18 cl, 6 dwg