Electrochromic polymer comprising N,N'-diphenyl-N,N'-diphenylene

Details Electrochromic polymer comprising N,N'-diphenyl-N,N'-diphenylene Electrochromic polymer comprising N,N'-diphenyl-N,N'-diphenylene

1987-05-27

1988-11-22

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Nitrogen-containing reactant

252500, 528210, C08G 7300, C08G 7302

Patent

active

047867159

ABSTRACT:
The disclosure relates to a novel polymer which is made up of repeating units of N,N,N'N'-tetrapheny-p-phenylenediamine. This polymer is thermoplastic and is soluble in industrially usable organic solvents. The polymer acquires high conductivity by doping with an electron acceptor. The polymer becomes insoluble in organic solvents when it is once doped with an electron acceptor and then dedoped, so that the polymer can be used as an active electrode material in electrolytic devices using an organic solvent. The polymer has electrochromic properties and undergoes two-stage oxidation and two-stage reduction to assume three differently stable states. The polymer exhibits pale yellow color in its reduced state, green color in the first-stage oxidized state and dark blue color in the second-stage oxidized state.

REFERENCES:
patent: 4565860 (1986-01-01), Murofushi et al.

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