Polymer having thieno[3,2-b] thiophene moieties
View Patent ↗A polymer comprising one or more types of repeat units, wherein the polymer includes a substituted thieno[3,2-b]thiophene component A and a different component B in the same type of repeat unit or in different types of repeat units, and wherein the polymer excludes a substituted or unsubstituted thieno[2,3-b]thiophene moiety. The polymer can be used as a semiconductor in electronics such as in organic thin film transistors.
1. A polymer comprising a repeat unit, wherein the repeat unit comprises a substituted thieno[3,2-b]thiophene component A and a different component B, wherein the polymer excludes a substituted or unsubstituted thieno[2,3-b]thiophene moiety, wherein component B is an aromatic moiety, and wherein components A and B are both in the backbone of the polymer.
2. The polymer of claim 1 , wherein the substituted thieno[3,2-b]thiophene component A is of formula (I):
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
3. The polymer of claim 1 , wherein the component B is a thieno[3,2-b]thiophene of formula (II):
wherein R 3 and R 4 are the same or different from each other and are independently selected from the group consisting of a hydrogen atom, an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
4. The polymer of claim 1 , wherein the polymer is a regioregular polymer.
5. A polymer selected from the group consisting of:
and mixtures thereof,
wherein n is the number of repeat units;
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, and wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen; and
wherein R 3 and R 4 are independently selected from the group consisting of a hydrogen atom, an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
6. The polymer of claim 5 , wherein the polymer is selected from the group consisting of:
and mixtures thereof,
wherein n is the number of repeat units;
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, and wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen; and wherein R 3 and R 4 are independently selected from the group consisting of a hydrogen atom, an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
7. The polymer of claim 5 , wherein the polymer is:
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, and wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
8. The polymer of claim 5 , wherein the polymer is:
wherein n is the number of repeat units; and
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.
9. The polymer of claim 1 , wherein the polymer is a block polymer.
10. The polymer of claim 9 , wherein the block polymer is selected from the group consisting of:
and mixtures thereof,
wherein x and y are the number of repeat units in the respective blocks, and are the same or different from each other;
wherein one of R 1 and R 2 is hydrogen and the other is a substituent, or both R 1 and R 2 are the same or different substituent, and wherein the substituent is independently selected from the group consisting of an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen; and wherein R 3 and R 4 are independently selected from the group consisting of a hydrogen atom, an optionally substituted hydrocarbon group, a heteroatom-containing group, and a halogen.