IP Library › Granted Patent US 6,992,167
Granted Patent B2
US 6,992,167 · App. 10/874,929 · Granted Jan 31, 2006

Polythiophenes and devices thereof

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Quick Facts
Patent No.
US 6,992,167
App. No.
10/874,929
Granted
Jan 31, 2006
Kind
B2
Abstract

Polythiophenes of the formula wherein R and R′ are side chains; A is a divalent linkage; x and y represent the number of unsubstituted thienylene units; z represents the number of groups, and wherein the sum of x and y represents the number of groups; m represents the number of segments; and n represents the degree of polymerization.

Claims (14)

1. Polythiophenes of the formula

wherein R and R′ are side chains; A is a divalent linkage; x and y represent the number of unsubstituted thienylene units; z represents the number of groups, and wherein the sum of x and y represents the number of groups; m represents the number of segments; and n represents the degree of polymerization.

2. A polythiophene in accordance with claim 1 wherein the number average molecular weight (M n ) of the polythiophenes is from about 2,000 to about 100,000 and the weight average molecular weight (M w ) is from about 4,000 to about 500,000, both as measured by gel permeation chromatography using polystyrene standards; z is 1 and the sum of x+y is less than about 2.

3. A polythiophene in accordance with claim 1 wherein x is a number of from zero to about 10, z is 1, and m is from 1 to about 5.

4. A polythiophene in accordance with claim 1 wherein x is a number of from about 1 to about 7, z is zero or 1, m is from 1 to about 5, and n is from about 5 to about 3,000.

5. A polythiophene in accordance with claim 1 wherein said R and R′ contain from about 3 to about 10 carbon atoms.

6. A polythiophene in accordance with claim 1 wherein R and R′ are selected from the group consisting of hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, and pentadecyl; A is selected from the group consisting of phenylene, biphenylene, and fluorenylene; x and y are each independently a number of from zero to about 10; and m is a number of from 1 to about 5.

7. A polythiophene in accordance with claim 1 wherein x, y and m are from 1 to 3, and z is 0 or 1.

8. A polythiophene in accordance with claim 1 wherein x, y and m are 1, and z is 0 or 1.

9. A polythiophene in accordance with claim 1 wherein x, y are from 0 to 3, m is from 1 to 3, and z is 0 or 1.

10. A polythiophene in accordance with claim 1 wherein x, y and m are 1, and z is 0.

11. A polythiophene in accordance with claim 1 wherein the sum of x and y is from about 1 to about 10.

12. A polythiophene in accordance with claim 1 wherein the sum of x and y is from about 1 to about 5.

13. A polythiophene in accordance with claim 1 wherein n is from about 10 to about 1,000, and m is from about 1 to about 3.