Abstract: The present invention provides a fluorine-containing liquid crystal polymer of Formula (1). The present invention also discloses a fluorine-containing liquid crystal elastomer, which comprises a copolymer of a fluorine-containing liquid crystal polymer of Formula (1) with a near-infrared dye of Formula (2). The fluorine-containing liquid crystal elastomer of the present invention shrinks due to the photothermal conversion effect of the material under the irradiation of near-infrared light, and thus is widely applicable to the field of actuators. The fluorine-containing liquid crystal polymer of the present invention introduces fluorine-containing segments into the cross-linked network of the liquid crystal polymer, to improve the mechanical performance of the material, and greatly extend the service time of light-controlled actuators.

Abstract: The invention provides a fluorine-containing graft copolymer, and a preparation method and use thereof. The method includes the following steps: under a protective atmosphere, reacting a compound of Formula (I) and a compound of Formula (II) in a first organic solvent in the presence of a catalyst and a ligand at 20-30° C., to obtain the fluorine-containing graft copolymers of Formula (III) after complete reaction. The compounds of Formulas (I) and (II), and the fluorine-containing graft copolymer of Formula (III) have a structural formula shown below: and the compound of Formula (II) comprises a polyethylene glycol segment and a terminal alkynyl group, wherein a=4-8; b=6-8; n=1-20; and m=3-22. In the present invention, a graft copolymer of a main-chain-type “semi-fluorinated” alternating copolymer is obtained for the first time by post-polymerization modification using a reactive functional group contained in the main-chain-type “semi-fluorinated” alternating copolymers.

Abstract: The present invention relates to a fluorine-containing alternating copolymer macromonomer and a synthesis method thereof. The synthesis method comprises steps of: subjecting a fluorine-containing alternating copolymer to a reduction reaction at 60-100° C. in an organic solvent in the presence of a reducing agent and a first catalyst to obtain a reduction product; in the presence of a second catalyst, reacting the reduction product with a mercapto-monohydric alcohol in an organic solvent at 60-100° C., to obtain a hydroxyl-terminated fluorine-containing alternating copolymer; and in the presence of a third catalyst, reacting the hydroxyl-terminated fluorine-containing alternating copolymer with an acrylic monomer or acryloyl chloride monomer at 0-30° C., to obtain the fluorine-containing alternating copolymer macromonomer. In the present invention, a fluorine-containing alternating copolymer macromonomer is initially synthesized from a fluorine-containing alternating copolymer through polymer modification.

Abstract: The present invention provides a fluorine-containing liquid crystal polymer of Formula (1). The present invention also discloses a fluorine-containing liquid crystal elastomer, which comprises a copolymer of a fluorine-containing liquid crystal polymer of Formula (1) with a near-infrared dye of Formula (2). The fluorine-containing liquid crystal elastomer of the present invention shrinks due to the photothermal conversion effect of the material under the irradiation of near-infrared light, and thus is widely applicable to the field of actuators. The fluorine-containing liquid crystal polymer of the present invention introduces fluorine-containing segments into the cross-linked network of the liquid crystal polymer, to improve the mechanical performance of the material, and greatly extend the service time of light-controlled actuators.

Abstract: The present invention relates to a photopolymerization method for preparing a block polymer with a main-chain “semi-fluorinated” alternating copolymer, which comprises the following steps: under a protective atmosphere, subjecting a methacrylate monomer and a “semi-fluorinated” alternating copolymer (AB)n macroinitiator to light-controlled living radical polymerization in an organic solvent at 20-30° C. in the presence of a photocatalyst, where the polymerization reaction is continued for at least half an hour under irradiation of light at 390-590 nm, to obtain a block copolymer of a main-chain polyolefin, polyester, or polyether “semi-fluorinated” alternating copolymer. The polymerization method is carried out under irradiation of visible light, the polymerization process has the characteristics of “living” radical polymerization, and the molecular weight distribution of the prepared polymer is narrow.

Abstract: The present invention relates to a fluorine-containing alternating copolymer macromonomer and a synthesis method thereof. The synthesis method comprises steps of: subjecting a fluorine-containing alternating copolymer to a reduction reaction at 60-100° C. in an organic solvent in the presence of a reducing agent and a first catalyst to obtain a reduction product; in the presence of a second catalyst, reacting the reduction product with a mercapto-monohydric alcohol in an organic solvent at 60-100° C., to obtain a hydroxyl-terminated fluorine-containing alternating copolymer; and in the presence of a third catalyst, reacting the hydroxyl-terminated fluorine-containing alternating copolymer with an acrylic monomer or acryloyl chloride monomer at 0-30° C., to obtain the fluorine-containing alternating copolymer macromonomer. In the present invention, a fluorine-containing alternating copolymer macromonomer is initially synthesized from a fluorine-containing alternating copolymer through polymer modification.