Electro-responsive ionic liquid crystal elastomer

Patent metadata

Field	Value
Publication number	US-11814562-B2
Application number	US-202117248127-A
Country	US
Kind code	B2
Filing date	Jan 11, 2021
Priority date	Jan 9, 2020
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

An ionic liquid crystal elastomer composition includes a liquid crystal elastomer; and an ionic liquid.

First claim

The invention claimed is:

1. An ionic liquid crystal elastomer composition comprising:
a liquid crystal elastomer; and
an ionic liquid;
wherein the liquid crystal elastomer is a reaction product of a reaction mixture comprising a monomer; a crosslinking agent; and an initiator.

2. The ionic liquid crystal elastomer composition of claim 1 , wherein the monomer is an acrylate monomer.

3. The ionic liquid crystal elastomer composition of claim 2 , wherein the acrylate monomer is a monofunctional acrylate monomer.

4. The ionic liquid crystal elastomer composition of claim 3 , wherein the monofunctional acrylate monomer is

5. The ionic liquid crystal elastomer composition of claim 1 , wherein the crosslinking agent is a bifunctional crosslinking agent.

6. The ionic liquid crystal elastomer composition of claim 5 , wherein the bifunctional crosslinking agent is

7. The ionic liquid crystal elastomer composition of claim 1 , wherein the initiator is a photoinitiator.

8. The ionic liquid crystal elastomer composition of claim 7 , wherein the photoinitiator is

9. The ionic liquid crystal elastomer composition of claim 1 , wherein the ionic liquid comprises

10. The ionic liquid crystal elastomer composition of claim 1 , wherein the ionic liquid crystal elastomer comprises from about 5 wt % to about 95 wt % of the liquid crystal elastomer and about 5 wt % to about 50 wt % of the ionic liquid.

11. The ionic liquid crystal elastomer composition of claim 1 , wherein the ionic liquid is selected from the group consisting of 1-Hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-Hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-allyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide, and 1-Hexyl-3-methyl-imidazolium-hexafluorophosphate.

12. The ionic liquid crystal elastomer composition of claim 1 , wherein the ionic liquid comprises at least one ion selected from the group consisting of: lithium ion, sodium ion, potassium ion, calcium ion, magnesium ion, aluminum ion, iron ion, zirconium ion, imidazolium ions, 1-ethyl-3-methylimidazolium ion, 1-butyl-3-methylimidazolium ion, 1-allyl-3-methylimidazolium ion, 1-butyl-2,3-dimethylimidazolium ion, 1-decyl-3-methylimidazolium ion, 1-hexyl-2,3-dimethylimidazolium ion, 1-hexyl-3-methylimidazolium ion, 1-(2-hydroxyethyl)-3-methylimidazolium ion, 2,3-dimethyl-1-propylimidazolium ion, 1,3-dimethylimidazolium ion, 1-methyl-3-n-octylimidazolium ion, 1-methyl-3-propylimidazolium ion, 1-methyl-3-pentylimidazolium ion), ammonium ions, pyridinium ions, pyrrolidinium ions, and phosphonium ions.

13. The ionic liquid crystal elastomer composition of claim 1 , wherein the ionic liquid comprises at least one ion selected from the group consisting of: chloride ion, bromide ion, hexafluoroarsenic ion, hexafluorophosphate ion, tetrafluoroborate ion, perchlorate ion, trifluoromethanesulfonic ion, bis(trifluoromethane)sulfonimide ion, bis(oxalato)borate ion, tetrafluoroborate ion, bis(fluorosulfonyl)imide ion, nitrate ion, hydrogen sulfate ion, trifluoroacetate ion, trifluoro(trifluoromethyl)borate ion, thiocyanate ion, and dimethyl phosphate ion.

14. A process for preparing the ionic liquid crystal elastomer composition of claim 1 , the process comprising:
polymerizing the monomer by reacting the reaction mixture to form the liquid crystal elastomer in the presence on the ionic liquid.

15. A process for producing a device comprising:
forming the ionic liquid crystal elastomer composition of claim 1 between a first transparent substrate and a second transparent substrate.

16. The process of claim 15 , further comprising:
providing at least one electrode.

17. The process of claim 16 , wherein the at least one electrode comprises: poly(3,4-ethylenedioxythiophene) polystyrene sulfonate.

Assignees

• Univ Kent State Ohio
• Univ Akron

Inventors

• Jákli Antal
• Feng Chenrun
• Rajapaksha Chathuranga Prageeth Hemantha
• Kaphle Vikash
• Kyu Thein

Classifications

• C09K19/02 Primary

  characterised by optical, electrical or physical properties of the components, in general · CPC title

• C08F2/14

  Organic medium · CPC title

• C08F2/50

  with sensitising agents · CPC title

• C08F20/30

  containing aromatic rings in the alcohol moiety · CPC title

• C08F22/20

  Esters containing oxygen in addition to the carboxy oxygen · CPC title