Electrically conductive organic compound and electronic device
In an electrically conductive organic compound, a side chain portion simultaneously exhibiting refractive index anisotropy and σ conjugated system electrical conductivity is bonded to a main chain portion exhibiting π conjugated system electrical conductivity. The electrically conductive organic compound is used in the production of a constituent element for electronic devices.
1. An electrically conductive organic compound in which a side chain portion simultaneously exhibiting refractive index anisotropy and σ conjugated system electrical conductivity is bonded to a main chain portion exhibiting π conjugated system electrical conductivity, wherein the side chain portion is a silane structure represented by the following general formula (III):
where R may be the same or different and each represents a lower alkyl group, and m is an integer of 5 to 20.
2. An electrically conductive organic compound according to claim 1 , wherein the main chain portion is constituted by a cyclic π conjugated system compound.
3. An electrically conductive organic compound according to claim 1 or 2 , wherein the main chain portion has a repeating unit represented by the following general formula (I):
where Z represents atoms necessary for completing a five-member ring along with a sulfur atom, X represents at least one side chain portion as claimed in claim 1 to be bonded to the five-member ring along and n represents an integer of 1 to 100.
4. An electrically conductive organic compound according to claim 3 , wherein the main chain portion has a repeating unit represented by the following general formula (I-1):
where each of X and n has the same meaning as defined in claim 3 .
5. An electrically conductive organic compound according to claim 1 or 2 , wherein the main chain portion has a repeating unit represented by the following general formula (II):
where Z represents atoms necessary for completing a five-member ring along with a sulfur atom, X represents at least one side chain portion as claimed in claim 1 to be bonded to the five-member ring, R 1 represents a hydrogen atom or at least one substitution group, and n represents an integer of 1 to 100.
6. An electrically conductive organic compound according to claim 5 , wherein the main chain portion has a repeating unit represented by the following general formula (II-1):
where each of X, R 1 and n has the same meaning as defined in claim 5 .
7. An electrically conductive organic compound according to claim 1 or 2 , wherein the side chain portion having the refractive index anisotropy property exhibits a smectic liquid crystal property.
8. An electrically conductive organic compound according to claim 1 or 2 , wherein the side chain portion having the refractive index anisotropy property exhibits a nematic liquid crystal property.
9. An electrically conductive organic compound according to claim 1 or 2 , which is represented by the following general formula (IV):
where X: —R 2 —(Si(CH 3 ) 2 ) m —CH 3 ,
R 2 : —CH 2 —O—, —CH 2 —, —C2H 4 — or —O—CH 2 —,
m=5 to 20, and
n=1 to 100.
10. An electrically conductive organic compound according to claim 1 or 2 , which is represented by the following general formula (V):
where X: —R 2 —(Si(CH 3 ) 2 ) m —CH 3 ,
R 1 : H, CH 3 or C 2 H 5 ,
R 2 : —CH 2 —O—, —CH 2 —, —C 2 H 4 — or —O —CH 2 —,
m=5 to 20, and
n=1 to 100.
11. An electronic device comprising a constituent element formed using an electrically conductive organic compound in which a side chain portion simultaneously exhibiting refractive index anisotropy and a conjugated system electrical conductivity is bonded to a main chain portion exhibiting π conjugated system electrical conductivity, wherein the side chain portion of said organic compound is a silane structure represented by the following general formula (III):
where R may be the same or different and each represents a lower alkyl group, and m is an integer of 5 to 20.
12. An electronic device according to claim 11 , wherein the main chain portion of said organic compound is constituted by a cyclic 90 conjugated compound.
13. An electronic device according to claim 11 or 12 , wherein the main chain portion of said organic compound has a repeating unit represented by the following general formula (I):
where Z represents atoms necessary for completing a five-member ring along with a sulfur atom, X represents at least one side chain portion as claimed in claim 11 to be bonded to the five-member ring and n represents an integer of 1 to 100.
14. An electronic device according to claim 13 , wherein the main chain portion of said organic compound has a repeating unit represented by the following general formula (I-1):
where each of X and n has the same meaning as defined in claim 13 .
15. An electronic device according to claim 11 or 12 , wherein the main chain portion of said organic compound has a repeating unit represented by the following general formula (II):
where Z represents atoms necessary for completing a five-member ring along with a sulfur atom, X represents at least one side chain portion as claimed in claim 11 to be bonded to the five-member ring, R 1 represents a hydrogen atom or at least one substitution group, and n represents an integer of 1 to 100.
16. An electronic device according to claim 15 , wherein the main chain portion of said organic compound has a repeating unit represented by the following general formula (II-1):
where each of X, R 1 and n has the same meaning as defined in claim 15 .
17. An electronic device according to claim 11 or 12 , wherein the side chain portion having the refractive index anisotropy property of said organic compound exhibits a smectic liquid crystal property.
18. An electronic device according to claim 11 or 12 , wherein the side chain portion having the refractive index anisotropy property of said organic compound exhibits a nematic liquid crystal property.
19. An electronic device according to claim 11 or 12 , wherein said organic compound is represented by the following general formula (IV):
where X: —R 2 —(Si(CH 3 ) 2 ) m —CH 3 ,
R 2 : —CH 2 —O—, —CH 2 —, —C 2 H 4 — or —O—CH 2 —,
m=5 to 20, and
n=1 to 100.
20. An electronic device according to claim 11 or 12 , wherein said organic compound is represented by the following general formula (V):
where X: —R 2 —(Si(CH 3 ) 2 ) m —CH 3 ,
R 1 : H, CH 3 or C 2 H 5 ,
R 2 ; —CH 2 —O—, —CH 2 —, —C 2 H 4 — or —O—CH 2 —,
m=5 to 20, and
n=1 to 100.
21. An electronic device according to claim 11 or 12 , which is in the form of an organic thin film transistor comprising a gate electrode, a gate insulator, a gate insulation film, a source electrode, a drain electrode and a channel layer on a substrate, and wherein the channel layer is formed of said electrically conductive organic compound.
22. An electronic device according to claim 21 , which further comprises an orientation film formed from polyimide on the gate insulation layer.
23. An electronic device according to claim 21 , wherein the substrate is formed from a plastic material.
24. An electronic device according to claim 11 or 12 , wherein the electrically conductive organic compound is dissolved in a solvent to form the constituent element.
25. An electronic device according to claim 24 , wherein a solution of the electrically conductive organic compound is applied and cured to form the constituent element.
26. An electronic device according to claim 24 , wherein a solution of the electrically conductive organic compound is printed and cured to form the constituent element.
27. An electronic device according to claim 11 or 12 , which has flexibility and is foldable.
28. An electronic device according to claim 11 or 12 , which is in the form of an electronic paper.