41 results about "Helical polymer" patented technology

Disclosed is a novel separating agent for optical isomers, which is composed of a polymer having an optically active moiety. Specifically disclosed is a separating agent for optical isomers, which is composed of a helical polymer that contains, as a monomer, an aromatic isonitrile having an amide group wherein an optically active amino acid is amide-bonded to an aromatic ring and a carrier that supports the helical polymer by being chemically bonded to the helical polymer at an end portion of the helical polymer.

The present invention relates to a polymer piezoelectric material, which comprises at least 2 regions, and the at least 2 regions include: a region H as an alignment polymer piezoelectric region, and the region H includes a region with a weight average molecular weight of 50,000 to 50,000 1 million optically active helical chiral polymers (A), and the crystallinity obtained by DSC method satisfies 20% to 80%, and when the standard thickness measured by microwave transmission type molecular orientation meter is set to 50 μm The standardized molecular orientation of satisfies 3.5 to 15.0; and the region L as a low orientation region, the region L includes an optically active helical chiral polymer (A) with a weight average molecular weight of 50,000 to 1 million, and exists in all At least a part near the end of the region H, and the average width when viewed from the normal direction to the main surface of the region H is 10 μm to 300 μm, and the retardation satisfies 100 nm or less.

The invention provides an oxidized helical conformation inverted thioether side chain-containing isocyanide spiral polymer and a preparation method thereof, and belongs to the technical field of polymer synthesis. The polymer provided by the invention has a repeating unit of the structural formula represented by Formula I in a molecular structure, the formula is shown in the description, wherein Ris an alkyl and benzyl, and n is an integer of more than or equal to 10. The thioether structure-containing polymer synthesized by the invention is of a spiral structure and has redox stimuli responsiveness. Due to the presence of S atoms, the polymer can be oxidized by an oxidizing agent to achieve redox irritation. Such thioether structure-containing polyisocyanide spiral polymer can be used inthe fields of chiral recognition, chiral separation, chiral signal amplification, asymmetric catalysis and the like.

The invention discloses a porphyrin-based supramolecular helical polymer and a synthesis method thereof. (1) Acylation reaction of Boc-protected L-type alanine and bromopropanine hydrochloride, and then de-Boc and N-acylation reactions to obtain small molecule aldehydes; (2) through [2+2] Synthetic method, bromination, Heck reaction to obtain hydroxy porphyrins, and then carry out ether-forming reaction and dehydration reaction with the above-mentioned small molecule aldehydes to obtain a porphyrin monomer with cyano branched chain; (3) porphyrin monomer in Ni 2+ Polymerization is carried out under catalysis to obtain the target compound. The present invention designs and synthesizes a porphyrin compound with an isonitrile helical polymer as the skeleton and branched chains with long hydrophobic chains and ester groups. This type of compound can be used as a material in organic photovoltaic materials and organic solar cells. , Catalysis and other fields.

The invention relates to the field of functional polymer materials, and discloses a chiral chromatographic filler of substituted polyalkyne-grafted divinylbenzene microspheres and a preparation method thereof, comprising the steps of: (1) using N-tert-butoxycarbonyl-alanine M1 is synthesized by amidation reaction with propargylamine; (2) M2 is synthesized by amidation reaction of acryloyl chloride and propargylamine; (3) M1 and M2 are initiated and copolymerized to obtain a copolymer; (4) Divinylbenzene is added to the initiator (5) Graft copolymerization of copolymer and PDVB microspheres under the action of initiator and cross-linking agent to obtain core-shell structure, and the core-shell structure is dispersed in Cu 2+ The chiral chromatographic packing is obtained by helical conformation induction in aqueous solution. To overcome the defect of poor stability of helical polymer-based composites, the graft copolymerization of substituted polyalkynes containing double bonds and highly cross-linked rigid PDVB greatly improves the stability of helical polymer-based composites.

The invention discloses a surface treatment method of a super-hydrophobic multifunctional cellulose-based material. The surface treatment method comprises the following steps: firstly, carrying out treatment by using a chemical agent to ensure that a thiol group capable of carrying out click reaction is modified on the surface of a base material; bonding a hydrophobic helical polymer containing anethylene-linkage terminal group to the surface of the material by utilizing click chemistry reaction, and carrying out drying to obtain the base material with surface-modified helical polymer. Multiple functions quickly given to the surface of the cellulose-based material are as follows: superhydrophobicity, chiral separation, chiral identification and asymmetric catalysis. The functions of abrasion resistance, waterproof performance, oil absorption performance and the like can be given. Due to trace modification, great improvement of the performance of the surface of cellulose products is realized, and the surface treatment method has the advantages of effectiveness, convenience, quickness and the like.

The present invention relates to protein constructs that comprise one or more peptides, proteins, factors, compounds or other components as further described herein that are linked to and / or are linked to each other via a helical polymeric backbone. The constructs of the invention are suitable for administration to a human or animal body and can be used for pharmaceutical purposes, for example, for immunotherapy, such as for treating cancer and for other immunological applications, as well as for other therapeutic, prophylactic and / or diagnostic purposes.

The invention discloses a preparation method and application of a polypropargyl helical polymer porous silicon-based microsphere, which relates to a preparation method of a chiral adsorption material. The purpose of the invention is to solve the problems of high preparation cost, poor acid resistance and low strength of the existing chiral adsorption materials. Methods: 1. Preparation of optically active helical polymer; 2. Preparation of a mixed system containing hydrogen bonds; 3. Loading to obtain porous silicon-based microspheres loaded with polypropargyl helical polymer. A porous silicon-based microsphere loaded with polypropargyl helical polymer as an adsorbent for separation of chiral amino acids. The porous silicon-based microspheres loaded with polypropargyl helical polymers prepared by the invention have good application prospects in the field of separation. The invention can obtain a porous silicon-based microsphere loaded with polypropargyl helical polymer.

The invention discloses a method for constructing a spiral immunization assembly sensor for determining neomycin, belonging to the technical field of material chemistry. The method comprises the following steps: preparing a water-soluble spiral polymer, modifying the spiral polymer with semi-antigen, coupling gold nano particles with antibody, and constructing a neomycin sensor. The invention provides a water-soluble spiral polymer, that is, poly(4-isocyano-benzoic acid). According to the invention, by immunization identification (neomycin semiantigen modified spiral polymer) and gold nanoparticle (coupled with antibody) assembly, the circular dichroism spectrum (CD) signals generated by the assembly detect the neomycin.

The invention provides a process for producing spiral polymers controlled in the direction of spiral winding easily from inexpensive general-purpose polymers; and spiral polymers controlled in the direction of spiral winding. The invention relates to a process for the production of syndiotactic polymethacrylate- or polyacrylate-type spiral polymers controlled in the direction of spiral winding which comprises dissolving a syndiotactic polymethacrylate- or polyacrylate-type polymer and a chiral compound in a solvent preferably under heating, subjecting the obtained solution to cooling or concentration to form a solid matter, and separating the solid matter; and so on.

The invention discloses a brand new infrared reflection device and a preparation method thereof. The infrared reflective device is filled with a liquid crystal mixture, and the liquid crystal mixture includes a polymer network with a helical structure and a lyotropic liquid crystal with a rod structure. The helical polymer network can induce the embedded lyotropic liquid crystal to form a helical structure corresponding to the helix of the polymer network, which can reflect back the circularly polarized light with the same handedness, and make the circularly polarized light with the opposite handedness light through. By adjusting the helical structure of the polymer network, light with different bandwidths can be transmitted or reflected, thereby achieving the purpose of adjusting infrared reflection.

A controllable synthesis method of highly stereoregular polymethyl methacrylate, comprising the following steps: Step 1: using amylose as a matrix raw material, and using 3,5-dimethylphenylisocyanate as a derivatization reagent, by The traditional esterification method synthesizes the helical polymer amylose-three (3,5-dimethylphenylcarbamate); step 2: the synthesized amylose-three (3,5- Dimethylphenylcarbamate) was added as an additive to the radical polymerization reaction of methyl methacrylate, and its regular helical structure was used to induce the radical polymerization behavior of methyl methacrylate, and finally prepared a highly stable Stereoregular polymethyl methacrylate; the invention has clear and feasible synthetic route, mature process, simple operation, few conditions to be controlled and easy realization, and can be used for large-scale batch production.