Claims
- 1. Method for the preparation of conjugated arylene and hetreroarylene vinylene polymers which comprises the steps of
- (a) preparing a precursor polymer by reacting an aromatic ring structure of the general formula
- X-R-X
- wherein X is selected from the group consisting of chloromethyl and bromomethyl groups and R is an aromatic group selected from the group consisting of thiophene, naphthalene, anthracene and benzene with an aqueous solution of an alkyl xanthic acid potassium salt of the general formula ##STR2## wherein n is an integer ranging from 0-3 in the presence of a phase transfer catalyst to obtain a monomer, and reacting the monomer so obtained with potassium tertiary butoxide to obtain a precursor polymer of the general formula ##STR3## wherein n is an integer ranging from 0-3, and R is an aromatic ring selected from the group consisting of benzene, thiophene, naphthalene and anthracene, and
- (b) subjecting said precursor polymer to thermal conversion at a temperature ranging from 150.degree. to 250.degree. C. in the presence of a gas.
- 2. Method in accordance with claim 1 wherein the precursor polymer is obtained by reacting an aromatic ring structure of the general formula
- X-R-X
- wherein X is selected from the group consisting of chloromethyl and bromomethyl groups and R is an aromatic group selected from the group consisting of thiophene, naphthalene, anthracene and benzene with an aqueous solution of an alkyl xanthic acid potassium salt of the general formula ##STR4## wherein n is an integer ranging from 0-3 in the presence of a phase transfer catalyst to obtain a monomer, and reacting the monomer so obtained with potassium tertiary butoxide to obtain the precursor polymer.
- 3. Method in accordance with claim 1 wherein the phase transfer catalyst is tetraethyl ammonium hydrogen sulfate.
- 4. Method in accordance with claim 1 wherein the weight average molecular weight of the prepolymer is within the range of 100,000 to 600,000 daltons for PPV.
- 5. Method in accordance with claim 1 wherein the conjugated polymer is poly (p-thienylene vinylene).
Parent Case Info
This application is a division of our patent application Ser. No. 08/321,287, filed on Oct. 11, 1994, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4521589 |
Yamamoto |
Jun 1985 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
321287 |
Oct 1994 |
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