Polyisothianaphtene, a new conducting polymer

Details Polyisothianaphtene, a new conducting polymer Polyisothianaphtene, a new conducting polymer

1985-05-22

1987-02-03

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

528378, 528379, 528380, 528395, 528403, 204 72, C25C 100

Patent

active

046407480

ABSTRACT:
A polymer having an isothianaphthene structure represented by the formula (Ia) and/or Ib): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or a hydrocarbon residue having 1 to 5 carbon atoms such as methyl, methoxy and thiomethyl, with the proviso that R.sup.1 and R.sup.2 may link together to form, along with the benzene ring, a fused ring which is naphthalene; X is sulfur, selenium or tellurium; Y.sup.- represents an anion of an electrolyte; z represents a number from 0.01 to 1 showing a ratio of the anion per mol of a monomer; and n represents a number of from 5 to 500 showing a degree of polymerization.
An electrochromic display wherein a high molecular weight conductive membrane formed on a conductive transparent base is used as a display base and an opposing electrode is arranged thereunder via a liquid electrolyte, which is characterized in that said high molecular weight conductive membrane is a polymer having an isothianaphthene structure and capable of being reversibly oxidized or reduced.

REFERENCES:
patent: 3574072 (1971-04-01), Louvar
patent: 4461691 (1984-07-01), Frank

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