31results about How to "Has luminous properties" patented technology

The invention provides a luminous pearl nucleus and a preparation method thereof as well as a method for cultivating luminous pearls. The method for preparing the luminous pearl nucleus comprises the following steps of uniformly mixing fluorescent powder with other randomly-selected components and putting the mixture into a crucible; putting the crucible into a reducing atmosphere furnace to be heated; after 5-8 hours, slowly raising the furnace temperature to 1150-1600 DEG C; pressurizing to be more than two barometric pressures and keeping a constant temperature and a constant pressure for 2-3 hours; directly utilizing a mould to press the fluorescent powder at a fused state into a luminous pearl nucleus shape; or after keeping the constant temperature and the constant pressure for 2-3 hours, naturally cooling to be condensed; and taking the crucible out of the atmosphere furnace and cooling to a room temperature, and polishing a condensed body into the luminous pearl nucleus shape. The luminous pearls cultivated by using the luminous pearl nucleus can resist corrosion of chemicals such as an acid, an alkali and the like, and can emit high-brightness light for a long time.

The invention belongs to a synthesis method of nano material, in particular to a synthesis method of platy-ZnSe fluorescent nano monocrystal, which comprises: under inert gas protection, heating and stirring or ultra-dissolving elementary substance Se in trioctylphosphine to obtain Se precursor; dissolving Zn source in octadecene, and adding activator long-chain alkylamines under inert gas protection to carry out 'activation' treatment; then introducing template agent long-chain alkyl sulfhydryl to carry out 'templated' treatment to activated Zn precursor, and finally heating up to the synthesis reaction temperature (300 to 350 DEG C) under inert gas protection; quickly adding the Se precursor in the Zn precursor, and reacting for a certain time to obtain original solution crude product of the platy-ZnSe fluorescent nano monocrystal. The final product of clear solvent of platy-ZnSe fluorescent nano monocrystal can be obtained through adding mixed solution consisting of high-polar organic solvent and low-polar organic solvent to wash and centrifuge, and finally dissolving with the low-polar organic solvent. The method has the advantages of simple reaction system, easy availability of raw material, little environment pollution, good crystallinity and high fluorescent quantum yield.

An anthraquinone-modified graphene quantum dot AAG and its preparation method and its application in the preparation of a lysine fluorescence detection reagent, the anthraquinone is introduced into the water-soluble nano-quantum dot, specifically for example, 1-aminoanthraquinone Introduced into graphene quantum dots, graphene quantum dots with luminescent properties and good water solubility are formed by connecting anthraquinone through amide bonds to form graphene quantum dots with dual luminescent properties. The synthesis method is simple, the conditions are mild, and the product is easy Obtained, the compound is used for the detection of lysine of the present invention to obtain good results, and is not affected by other conventional coexisting biomolecules, such as alanine, glycine, arginine, methionine, glucose, glucosamine and other substances, and has high selectivity. The fluorescence spectrophotometer is easy to operate, and the sample fluorescence signal is obvious.

The invention discloses a Mn<4+> ion-doped red phosphor, and a preparation method and an application thereof. The general chemical formula of the phosphor is Cs3Ge2Sb3O13:xMn<4+>, wherein x is the molar ratio of doped Mn<4+>, and x is not less than 0.0005 and not more than 0.015. The above material prepared in the invention is responsive in a blue light, near ultraviolet light or ultraviolet lightwavelength range, emits red fluorescence in a wavelength range of 620-750 nm, and can be used to substitute a traditional rare earth-doped red light source; and the excitation spectrum range of the phosphor is wide, strong absorption exists in 355 nm, and the excitation spectrum range is consistent to the luminescence waveband of a commercial ultraviolet-blue light chip. The preparation method ofthe phosphor is simple; and compared with rare earth phosphor, the phosphor disclosed in the invention has the characteristics of wide selectivity of raw materials, and low cost, is a red fluorescentmaterial having a good luminescence performance, and can be used to manufacture near ultraviolet light or blue light excited white LED phosphor.

The application relates to a thiophene[3,4-b]thiophene panchromatic fluorescent dye and its preparation method and application. The application provides a thiophene [3,4-b] thienaryl-substituted compound with full-color luminescent properties and high fluorescence quantum yield in a strongly polar aprotic solvent, and also provides a possible Green and efficient synthesis with one-step reaction, low production cost, and a preparation method with industrial production potential, the method is realized by C-H direct arylation reaction, Suzuki-miyara or Stille cross-coupling reaction; at the same time, the compound It can be used in medical diagnosis, disease treatment, and the light-emitting layer of white light organic light-emitting diodes.