7 results about "Chiral polymers" patented technology

A piezoelectric element includes: a piezoelectric body having a first surface and a second surface that are different from each other; a first electrode provided at the first surface; and a second electrode provided at the second surface. The piezoelectric body contains a helical chiral polymer crystal having an orientation axis as a crystal axis, the orientation axis is uniaxially oriented in a manner of intersecting both the first surface and the second surface, and a degree of orientation of the orientation axis in the piezoelectric body is 0.80 or more.

A kind of circularly polarized chiral organic fluorescent light emitting material and its preparation method and application belong to the technical field of design, preparation and application of chiral polymer functional materials.The chiral binaphthyl compound R / S-2 prepared as chiral monomer is coupled with the monomer of fluorenyl chromophore group with single bond, double bond and triple bond connector to prepare three intrinsic chiral polymer functional fluorescent light emitting materials R / S-P1, R / S-P2 and R / S-P3 with different conjugated main chain conformations by Suzuki, Heck and Sonogashira coupling polymerization reaction, and their photophysical properties and chiral luminescence performance in thin film state are studied.The experiment proves that the product prepared by the application embodies the controllable photophysical properties in test, and has certain circular dichroism and circularly polarized luminescence properties, indicating that it is expected to be applied in the field of chiral solid-state display material and optoelectronic device.

The invention discloses a preparation method and application of chiral polymer gel, and belongs to the technical field of gel materials. A chiral amide monomer derived from acrylic acid is used as a construction module, a chiral enantiomer dominant conformation-assembly-chiral gel structure regulation strategy is provided, chiral polymer gel is successfully prepared, and a universal platform is provided for development of CPL materials. The circularly polarized luminescent gel can be obtained by doping luminescent materials (400-750 nm) with different emission wavelengths into the chiral gel, the glum value is close to-0.0092, a multifunctional platform is provided for the design of a visible CPL material, and the circularly polarized luminescent gel has wide application prospects in the fields of chiral optics, anti-counterfeiting and biosensing.

The invention provides a chiral ruthenium catalyst as well as a preparation method and application thereof. The structure of the chiral ruthenium catalyst is shown as a formula (1) or a formula (2), and the chiral ruthenium catalyst is suitable for asymmetric ring-opening cross olefin metathesis polymerization reaction and can be used for preparing chiral polymers. The invention also provides a preparation method and application of the chiral ruthenium catalyst.

This invention belongs to the field of chiral polymer technology, and provides a chiral polypropynylamine compound with the general structural formula R. 1 ~R 10 Independently, the radicals are phenyl, benzophenone, triphenylamine, o-tolyl, 1-naphthyl, or alkoxyphenyl; n is any integer from 2 to 4000; wavy lines represent omitted repeating polymer segments; asterisks indicate that the carbon atom here has a certain stereoselectivity. This invention also provides a method for preparing chiral polypropynylamine compounds and their applications. This invention uses monomers completely lacking a chiral center as reaction substrates to prepare chiral polypropynylamine compounds in high yield, effectively solving the problems of high temperature, large metal catalyst feed amount, and lack of chiral polymer structures existing in the prior art; the preparation method of this invention can extend the substrate of polypropynylamine to aromatic amine monomers, preparing polymer materials with diverse functions.

The invention provides a chiral polymer fabric composite material, an electromagnetic shielding component and preparation methods of the chiral polymer fabric composite material and the electromagnetic shielding component. The chiral polymer fabric composite material comprises at least two hardened matrix layers and at least one chiral polymer fabric layer which are alternately stacked, each chiral polymer fabric layer is clamped between two adjacent hardened matrix layers; wherein the chiral polymer fabric layers are prepared by loading chiral polymers on fiber fabrics, and the number of the chiral polymer fabric layers in the chiral polymer fabric composite material is 1-5; the thickness of the chiral polymer fabric layer is 0.01-5mm, and the electromagnetic shielding effectiveness SET is greater than 25dB. The impedance gradient structure of the multi-layer chiral polymer fabric is constructed, so that the absorption loss of electromagnetic waves is remarkably enhanced, green shielding is achieved, and the dual requirements of civil and military facilities and other scenes for efficient electromagnetic shielding and excellent engineering performance of a main body structure material are finally met.

The application belongs to the technical field of chemical energy storage batteries, and particularly provides a chiral hydrogel electrolyte based on supramolecular assembly and a preparation method thereof, so as to solve the problems of ion channel disorder and insufficient free water binding of traditional non-chiral gel electrolytes; the application introduces single pure configuration chiral guest molecules into a non-chiral polymer substrate, forms a supramolecular chiral film based on stereodirectional supramolecular assembly, and obtains a chiral hydrogel electrolyte after swelling and saturation in an aqueous electrolyte; the chiral guest molecules reshape the topological network of the polymer as topological guests, form a stereodirectional network, and make the energy storage modulus of the gel jump, so that the gel has the ability to resist dendrite penetration; at the same time, the chiral guest molecules can realize interface stabilization of the negative electrode and further inhibit the negative electrode dendrite; in addition, the stereodirectional network can greatly limit the activity of free water molecules and eliminate the corrosion of free water molecules on the vanadium positive electrode and vanadium dissolution.