Claims
- 1. A linear poly(3-alkyl-2,5-thienylene) polymer consisting essentially of the repeating unit having the formula: ##STR8## wherein R represents a lower alkyl group, and n is 20-100.
- 2. A method of producing a linear poly(3-alkyl-2,5-thienylene) polymer consisting essentially of the repeating unit having the formula: ##STR9## wherein R represents a lower alkyl group and n is 20-100, comprising reacting 3-alkyl-2,5-dihalothiophene with magnesium in an inert solvent in the substantial absence of water, in contact with a nickel compound catalyst in an inert atmosphere.
- 3. A method as defined in claim 2, wherein the nickel compound is selected from the group consisting of halogenated nickel and nickel complex compound.
- 4. A method as defined in claim 3, wherein the halogenated nickel is selected from the group consisting of NiCl.sub.2 and NiBr.sub.2.
- 5. A method as defined in claim 3, wherein the nickel complex compound is selected from the group consisting of dichloro(2,2'-bipyridine) nickel, dibromobis(triphenylphosphine) nickel and 1,5-cyclooctadiene-bis(triphenylphosphine)nickel.
- 6. A method as defined in claim 2, wherein the amount of catalyst is 0.01-0.5 wt. % relative to 3-alkyl-2,5-dihalothiophene.
- 7. A method as defined in claim 2, wherein the inert solvent is an ether series solvent.
- 8. A method as defined in claim 7, wherein the ether series solvent is selected from the group consisting of tetrahydrofuran, diethylether and dibutylether.
- 9. A method as defined in claim 2, wherein the reaction is effected under reflux temperature.
- 10. A semiconductor comprising a linear poly(3-alkyl-2,5-thienylene) polymer and an electron acceptor, the polymer consisting essentially of the repeating unit having the formula: ##STR10## wherein R represents a lower alkyl group, and n is 20 to 100.
- 11. A method of producing a linear poly(3-alkyl-2,5-thienylene) polymer consisting essentially of the repeating unit having the formula: ##STR11## wherein R represents a lower alkyl group and n is 20-100, comprising the steps of
- reacting 3-alkyl-2,5-dihalothiophene with magnesium in an inert solvent in the substantial absence of water, in contact with a nickel compound catalyst in an inert atmosphere;
- washing the thus obtained polymer with a mixture of hydrochloric acid and methyl alcohol;
- washing the polymer with water; and
- drying the thus washed polymer.
- 12. A method as defined in claim 11, wherein the nickel compound is selected from the group consisting of halogenated nickel and nickel complex compound.
- 13. A method as defined in claim 12, wherein the halogenated nickel is selected from the group consisting of NiCl.sub.2 and NiBr.sub.2.
- 14. A method as defined in claim 12, wherein the nickel complex compound is selected from the group consisting of dichloro(2,2'bipyridine) nickel, dibromobis(triphenylphosphine) nickel and 1,5-cyclooctadienebis(triphenylphosphine) nickel.
- 15. A method as defined in claim 12, wherein the amount of catalyst is 0.01-0.5 wt. % relative to 3-alkyl-2,5-dihalothiophene.
- 16. A method as defined in claim 12, wherein the inert solvent is an ether series solvent.
- 17. A method as defined in claim 16, wherein the ether series solvent is selected from the group consisting of tetrahydrofuran, diethylether and dibutylether.
- 18. A method as defined in claim 12, wherein the reaction is effected under reflux temperature.
Priority Claims (1)
Number |
Date |
Country |
Kind |
57-29082 |
Feb 1982 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 06/432,374, filed Sept. 30th, 1982, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
2552796 |
Koft |
May 1951 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
57-15369 |
Jan 1982 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
432374 |
Sep 1982 |
|