Degradable white and near-infrared two-region dual-mode light-emitting nanocrystal as well as preparation method and application thereof

• Main Authors: LYU WUBIN, XU JIATING, FU YUJIE, CUI YUJIE, QU JIAWEI, SHANGGUAN HANG, WANG QIANG, NIU NA
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; HUMAN NECESSITIES; HYGIENE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MEASURING; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NANOTECHNOLOGY; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TESTING; TRANSPORTING

The invention provides a white and near-infrared two-region dual-mode luminescent degradable nanocrystal, a preparation method and an application, trifluoroacetate of rare earth metals ytterbium, erbium and cerium and a zirconium acetate solid are used as raw materials, and a high-temperature solvothermal method is adopted to prepare a nuclear nanocrystal Na3ZrF7: Yb, Er and Ce; then Ca (CF3COO) 2, zirconium acetate and trifluoroacetate of rare earth metal ytterbium and thulium are added, and core-shell nanocrystals Na3ZrF7: Yb, Er, Ce and CaF2: Yb, Tm and Zr are prepared through a coating method; finally, Ca (CF3COO) 2 and zirconium acetate are added, and the nanocrystalline Na3ZrF7: Yb, Er, Ce (at) CaF2: Yb, Tm, Zr (at) CaF2: Zr with the core-shell-shell structure is prepared through a coating method again. According to the preparation method, the synthetic route is simple and easy to operate, the particle size distribution is uniform, the product purity is high, green and environment-friendly effects are a