41 results about "Helical polymer" patented technology

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 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 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.

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.