US 11,926,697 B2
Fluorine-containing liquid crystal elastomer and preparation method and use thereof
Zhenping Cheng, Suzhou (CN); Kai Tu, Suzhou (CN); Enjie He, Suzhou (CN); Jiannan Cheng, Suzhou (CN); Lifen Zhang, Suzhou (CN); and Xiulin Zhu, Suzhou (CN)
Assigned to SOOCHOW UNIVERSITY, Suzhou (CN)
Appl. No. 17/270,593
Filed by SOOCHOW UNIVERSITY, Suzhou (CN)
PCT Filed Aug. 20, 2020, PCT No. PCT/CN2020/110117
§ 371(c)(1), (2) Date Feb. 23, 2021,
PCT Pub. No. WO2021/155660, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 202010082606.X (CN), filed on Feb. 7, 2020.
Prior Publication US 2022/0119589 A1, Apr. 21, 2022
Int. Cl. C08G 61/12 (2006.01); B29C 55/00 (2006.01); B29C 55/04 (2006.01); C07C 227/16 (2006.01); C08J 5/18 (2006.01); C09K 19/38 (2006.01); F04B 49/00 (2006.01); G08C 23/04 (2006.01); B29K 105/00 (2006.01); B29L 7/00 (2006.01)
CPC C08G 61/121 (2013.01) [B29C 55/005 (2013.01); B29C 55/04 (2013.01); C07C 227/16 (2013.01); C08J 5/18 (2013.01); C09K 19/3804 (2013.01); F04B 49/00 (2013.01); G08C 23/04 (2013.01); B29K 2105/0079 (2013.01); B29L 2007/008 (2013.01); C08G 2261/124 (2013.01); C08G 2261/316 (2013.01); C08G 2261/53 (2013.01); C08G 2261/76 (2013.01); C08J 2365/00 (2013.01)] 4 Claims
 
1. A method for preparing a fluorine-containing liquid crystal elastomer, comprising steps of:
(1) under a protective atmosphere, reacting a fluorine-containing liquid crystal polymer of Formula (1) and a near-infrared dye of Formula (2) in the presence of Grubbs catalyst in an organic solvent at 58-65° C. for 1.5-2.5 h to obtain a preliminarily cross-linked polymer; and
(2) applying an external force to the preliminarily cross-linked polymer, and allowing the preliminarily cross-linked polymer to react at 110-130° C. under the action of the external force, to obtain the fluorine-containing liquid crystal elastomer after the reaction is completed, wherein the compounds of Formulas (1)-(2) are shown below:

OG Complex Work Unit Chemistry
where X=5-12.