Temperature compensating chiral dopants
View Patent ↗The present invention relates to a chiral compound, and an article utilizing the same, represented by the following structures I-1, I-2, I-3, or 1-4: wherein the chiral compound demonstrates thermochromic temperature insensitivity.
1. A chiral compound represented by the following structure I-1,
wherein:
said chiral compound demonstrates thermochromic temperature insensitivity.
2. The chiral compound of claim 1 wherein said chiral compound, when combined with a host mesophase, has a thermochromic slope (|S|) with an absolute value of less than or equal to 0.3 nm/° C.
3. A chiral compound represented by the following structure I-2:
wherein:
said chiral compound demonstrates thermochromic temperature insensitivity.
4. The chiral compound of claim 3 wherein said chiral compound, when combined with a host mesophase, has a thermochromic slope (|S|) with an absolute value of less than or equal to 0.3 nm/° C.
5. A chiral compound represented by the following structure I-3:
wherein:
said chiral compound demonstrates thermochromic temperature insensitivity.
6. The chiral compound of claim 5 wherein said chiral compound, when combined with a host mesophase, has a thermochromic slope (|S|) with an absolute value of less than or equal to 0.3 nm/° C.
7. A chiral compound represented by the following structure I-4:
wherein:
said chiral compound demonstrates thermochromic temperature insensitivity.
8. The chiral compound of claim 7 wherein said chiral compound, when combined with a host mesophase, has a thermochromic slope (|S|) with an absolute value of less than or equal to 0.3 nm/° C.
9. An article comprising a substrate and a liquid crystalline layer coated thereon, wherein said liquid crystalline layer comprises a nematic host and a thermochromic temperature insensitive chiral dopant represented by the following structures I-1:
10. The article of claim 9 wherein said liquid crystalline layer further comprises a polymer binder in which domains of the liquid crystal are dispersed.
11. The article of claim 9 wherein said nematic host is chiral nematic, or ferroelectric.
12. The article of claim 9 wherein the nematic host is chiral nematic.
13. The article of claim 9 further comprising additional types of dopants.
14. The article of claim 9 wherein said substrate is transparent.
15. The article of claim 9 further comprising a transparent first conductive layer between said substrate and said liquid crystalline layer.
16. The article of claim 15 further comprising at least a second electrically conductive layer, wherein said liquid crystalline layer is between said first transparent conductive layer and said second conductive layer.
17. An article comprising a substrate and a liquid crystalline layer coated thereon, wherein said liquid crystalline layer comprises a nematic host and a thermochromic temperature insensitive chiral dopant represented by the following structure I-2:
18. The article of claim 17 wherein said liquid crystalline layer further comprises a polymer binder in which domains of the liquid crystal are dispersed.
19. The article of claim 17 wherein said nematic host is chiral nematic, or ferroelectric.
20. The article of claim 17 wherein the nematic host is chiral nematic.
21. The article of claim 17 further comprising additional types of dopants.
22. The article of claim 17 wherein said substrate is transparent.
23. The article of claim 17 further comprising a transparent first conductive layer between said substrate and said liquid crystalline layer.
24. The article of claim 23 further comprising at least a second electrically conductive layer, wherein said liquid crystalline layer is between said first transparent conductive layer and said second conductive layer.
25. An article comprising a substrate and a liquid crystalline layer coated thereon, wherein said liquid crystalline layer comprises a nematic host and a thermochromic temperature insensitive chiral dopant represented by the following structure I-3:
26. The article of claim 25 wherein said liquid crystalline layer further comprises a polymer binder in which domains of the liquid crystal are dispersed.
27. The article of claim 25 wherein said nematic host is chiral nematic, or ferroelectric.
28. The article of claim 25 wherein the nematic host is chiral nematic.
29. The article of claim 25 further comprising additional types of dopants.
30. The article of claim 25 wherein said substrate is transparent.
31. The article of claim 25 further comprising a transparent first conductive layer between said substrate and said liquid crystalline layer.
32. The article of claim 31 further comprising at least a second electrically conductive layer, wherein said liquid crystalline layer is between said first transparent conductive layer and said second conductive layer.
33. An article comprising a substrate and a liquid crystalline layer coated thereon, wherein said liquid crystalline layer comprises a nematic host and a thermochromic temperature insensitive chiral dopant represented by the following structure I-4:
34. The article of claim 33 wherein said liquid crystalline layer further comprises a polymer binder in which domains of the liquid crystal are dispersed.
35. The article of claim 33 wherein said nematic host is chiral nematic, or ferroelectric.
36. The article of claim 33 wherein the nematic host is chiral nematic.
37. The article of claim 33 further comprising additional types of dopants.
38. The article of claim 33 wherein said substrate is transparent.
39. The article of claim 33 further comprising a transparent first conductive layer between said substrate and said liquid crystalline layer.
40. The article of claim 39 further comprising at least a second electrically conductive layer, wherein said liquid crystalline layer is between said first transparent conductive layer and said second conductive layer.