5results about How to "Small molecular size" patented technology

The application belongs to the technical field of organic electroluminescence, and relates to an organic compound, an organic electroluminescent device using the same and an electronic device. The organic compound has a structure as shown in formula 1. When the organic compound is used in an organic electroluminescent device, the performance of the organic electroluminescent device can be significantly improved.

The application belongs to the technical field of bamboo processing, and particularly relates to a preparation method of improved reconstituted bamboo, wherein the defibrated bamboo bundle is stepwise impregnated by preparing etherified melamine formaldehyde resin and modified phenolic resin. First, the bamboo bundle is impregnated by the etherified melamine formaldehyde resin with small molecular size, low viscosity and good water solubility, so that the etherified melamine formaldehyde resin can deeply enter the cell wall and the inner part of the micropore of the bamboo, fully fill the pores and block the hydrophilic channels, and meanwhile, the mildewproof agent is uniformly delivered to the inner part of the bamboo. Further, the bamboo bundle is impregnated by the phenolic resin with large molecular size and modified by flexible sugar ring units, so that the phenolic resin can be enriched on the surface of the bamboo bundle and the bonding interface, a flexible bonding layer is formed, the flexible molecular chain can buffer the residual stress of the interface, the bonding layer flexibility and the bonding strength of the bamboo bundle are improved, and the structural stability of the reconstituted bamboo during long-term use is further ensured.

This invention discloses a heat- and impact-resistant protective conduit for MPP cables and its preparation method, relating to the field of polymer materials technology. The components, by weight, include: 20-22 parts of a toughening dispersion made from anhydrous ethanol and terminally epoxy-terminated hyperbranched polysiloxane; 33-35 parts of a boron-nitrogen co-doped carbon dot made from citric acid, boric acid, and urea, first compounded with phytic acid and piperazine, then compounded with modified zirconium phosphate prepared by hexadecyltrimethylammonium bromide intercalation, and then modified with silane coupling agent KH-560 to form a flame retardant synergist; 12-14 parts of polyolefin elastomer; 2-2.5 parts of magnesium aluminum hydrotalcite; 0.2-0.24 parts of antioxidant; 0.2-0.3 parts of calcium stearate; 0.2-0.3 parts of polyethylene wax; and 100-120 parts of polypropylene. The introduction of the flame retardant synergist and other raw materials in this invention effectively improves flame retardancy, aging resistance, impact resistance, low-temperature resistance, and heat resistance.

The invention provides mannosylated beta-lactoglobulin-curcumin nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of medicines. The preparation method provided by the invention comprises the following steps: mixing a mannose solution and a beta-lactoglobulin solution, and sequentially carrying out first reaction, dialysis and freeze drying to obtain a mannosylated beta-lactoglobulin monomer; the preparation method comprises the following steps: dissolving mannosylated beta-lactoglobulin in water to obtain a mannosylated beta-lactoglobulin monomer solution, then mixing the mannosylated beta-lactoglobulin monomer solution with a first curcumin-ethanol solution, then adjusting the pH value, then sequentially carrying out incubation and a second reaction to obtain a mannosylated beta-lactoglobulin-curcumin compound, then carrying out a third reaction on the mannosylated beta-lactoglobulin-curcumin compound and a second curcumin-ethanol solution to obtain the mannosylated beta- and finally, dissolving the mannosylated beta-lactoglobulin-curcumin primary nano-particles in an MES buffer solution, adding absolute ethyl alcohol, and carrying out a fourth reaction, so as to obtain the mannosylated beta-lactoglobulin-curcumin secondary nano-particles.

The application discloses application of a compact CRISPR / SwCas9 system in corn gene editing. Zmzb7 and ZmF3H The editing efficiency of T0 plants targeting the genes is 60% and 75% respectively. The application provides a novel tool with independent intellectual property right, compact size and high efficiency for corn gene knockout and multi-target point editing.