6results about How to "Enhanced glow" patented technology

The invention discloses a composite material and a preparation method thereof, a light-emitting device and a display device, and relates to the technical field of display. The composite material comprises inorganic particles and ligands connected to the inorganic particles, the ligands have the structural formula shown in the formula (I): # imgabs0 #, and Ar comprises substituted or unsubstituted fused ring aryl or fused ring heteroaryl; x is selected from one or more of amino, carboxyl, sulfydryl or phosphate. The composite material comprises inorganic particles and ligands connected with the inorganic particles, the ligands have annular conjugated structures and functional groups, and the functional groups can be in coordination connection with the inorganic particles; compared with ligands with similar annular non-conjugated structures, the ligands with annular conjugated structures enable charges to be delocalized due to resonance and hybridization and have lower energy, so that the composite material is not easy to oxidize, and the ligands in an excited state can interact with the energy level of inorganic particles to promote the light emitting of the light emitting device, thereby improving the light emitting efficiency of the light emitting device and improving the light emitting efficiency of the light emitting device. And the service life of the luminescent device is prolonged.

The application discloses a SiO2-coated negative thermal expansion film and application thereof, and belongs to the technical field of temperature measurement. 12 :Nd 3+ The precursor solution is calcined to obtain the negative thermal expansion film, and then SiO2 solution is added dropwise on the negative thermal expansion film to obtain the SiO2-coated Yb2W3O 12 :Nd 3+ The SiO2-coated negative thermal expansion film is loaded on the opal template. 12 :Nd 3+ As a matrix, the SiO2 coating does not affect the luminescence of the negative thermal expansion film, and makes the Yb2W3O 12 :Nd 3+ The luminescence of the film in the near infrared is significantly enhanced. In addition, compared with the negative thermal expansion material film without the SiO2 coating, the negative thermal expansion material film is more sensitive to temperature.

The present application relates to a kind of reversible pressure-induced color change thermoplastic polyurethane elastomer and its preparation method.The reversible pressure-induced color change thermoplastic polyurethane elastomer includes, by weight parts, dihydric alcohol of tetraphenyl ethene group 50-80, diisocyanate 10-30, catalyst 0.005-0.02 and chain extender 1-10;The dihydric alcohol containing tetraphenyl ethene group is synthesized by polymerization reaction from aliphatic diacid and dihydric alcohol raw materials.The present application uses special macromolecular dihydric alcohol containing tetraphenyl ethene group as raw material to prepare pressure-induced color change thermoplastic polyurethane elastomer, after material processing and shaping, molecule free activity is limited, when material is extruded and deformed by external force, the rotation of benzene ring in tetraphenyl ethene molecule which can freely rotate is limited, the non-radiative transition mainly by rotation is reduced, molecule luminescence is enhanced, so that the material has the performance of pressure-induced color change.

The application belongs to the technical field of biotechnology, and particularly relates to a lysosome-targeting probe and a preparation method and application thereof. The structural formula of the lysosome-targeting probe is shown in formula (I). In formula (I), A is selected from an oxygen atom and a sulfur atom, R1 is selected from a hydrogen atom and an aromatic ring group, R2 is selected from a cyano group and a group shown in formula (II), R3 is selected from an aromatic ring group, and R4 is selected from a hydrogen atom and an alkyl group with a carbon atom number of 1-20. The compound of the application can specifically target lysosomes in tumor cells, emit bright fluorescence, and has a good fluorescence co-localization effect with lysosomes in tumor cells. The compound can be used for lysosome imaging, and the fluorescence intensity thereof is positively correlated with the viscosity of lysosomes in living cells such as tumor cells. The compound can be used for monitoring the viscosity change of lysosomes in living cells under various conditions. The compound can be used as a photosensitizer and a treatment sensitizer, specifically ablates tumors through photodynamic therapy (PDT), restores the sensitivity of tumor cells to radiotherapy and chemotherapy, and enhances the treatment effect of radiotherapy and chemotherapy.

The present invention discloses a method for preparing highly luminescent cadmium selenide quantum dots without water and oxygen isolation, comprising: step S1, precursor preparation; step S2: synthesizing quantum dots; step S3, sample purification; step S4, ligand exchange preparation of products. In the present invention, since there is no need to prepare a shell structure, the problems of complex operation, high cost, low efficiency, poor repeatability, etc. of traditional quantum dot synthesis are further avoided, and the surface properties of the material are more controllable, which is conducive to further surface chemical regulation and is used in the fields of optoelectronic display, photovoltaics, fluorescence sensing, etc.

The present invention discloses a dual-ligand construction of a long-term high-luminescence water-soluble quantum dot fluorescent probe, comprising the following steps: step S2, preparation of CdSe precursor; step S3, synthesis of CdSe quantum dots; step S4, preparation of water-soluble quantum dots; step S5, preparation of simple water-soluble quantum dot test paper; step S6, detection of metal ions of CdSe quantum dots and / or detection of antibiotic tetracycline. The present invention transfers oil phase quantum dots to water phase by simply adding a double amphiphilic substance to the surface, and the fluorescence efficiency is improved compared to the original quantum dots, and high luminescence can be maintained for more than one month, the overall operation steps are simple, and the problem of the prior art that the fluorescence gradually decreases in a short period of time until it disappears is solved.