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Ultra-strong multi-photon up-conversion nanocrystalline for super-resolution imaging as well as preparation and application methods thereof

A super-resolution imaging and nanocrystal technology, applied in the field of materials science, to achieve uniform and controllable size and morphology, and strong penetration ability.

Active Publication Date: 2014-12-10
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under normal circumstances, the efficiency of multi-photon upconversion transitions is always much lower than that of single-photon or two-photon transitions, often showing an order of magnitude difference in intensity in spectroscopy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A super-intense multi-photon up-conversion nanocrystal for super-resolution imaging, a hexagonal phase monodisperse tetrafluoroyttrium sodium nanocrystal with uniform and controllable size and shape, and co-doped with rare earth ytterbium ions and thulium ions.

[0022] The method of ultra-strong multi-photon up-conversion nanocrystals, measure 1.6ml of 0.2mol / L yttrium acetate aqueous solution, 0.36ml of 0.2mol / L ytterbium acetate aqueous solution, 0.04ml of 0.2mol / L thulium acetate aqueous solution, with a purity of 90% 3ml of oleic acid and 7ml of 1-octadecene were placed in a three-necked flask, stirred and heated at 150°C for 30 minutes; after cooling to room temperature, 4.3ml of methanol mixed solution of sodium hydroxide and ammonium fluoride was added, and the temperature was raised to 50 ℃, open the door and stir for 30 minutes; heat up to 100°C, after methanol volatilizes, pass in argon, continue to heat up to 290°C, keep warm for 90 minutes, and then cool dow...

Embodiment 2

[0025] A super-intense multi-photon up-conversion nanocrystal for super-resolution imaging, a hexagonal phase monodisperse tetrafluoroyttrium sodium nanocrystal with uniform and controllable size and shape, and co-doped with rare earth ytterbium ions and thulium ions.

[0026] The method of ultra-strong multi-photon up-conversion nanocrystals, measure 1ml of 0.2mol / L yttrium acetate aqueous solution, 0.98ml of 0.2mol / L ytterbium acetate aqueous solution, 0.02ml of 0.2mol / L thulium acetate aqueous solution, and oil with a purity of 90% Acid 3ml, 1-octadecene 7ml, put in a three-necked flask, stir and heat at 150°C for 30 minutes; after cooling to room temperature, add 4.3ml of methanol mixed solution of sodium hydroxide and ammonium fluoride, and heat up to 50°C Open and stir for 30 minutes; heat up to 100°C, after the methanol volatilizes, pass in argon, continue to heat up to 290°C, keep warm for 90 minutes, and then cool down; precipitate with acetone, centrifuge, and wash tw...

Embodiment 3

[0029] A super-intense multi-photon up-conversion nanocrystal for super-resolution imaging, a hexagonal phase monodisperse tetrafluoroyttrium sodium nanocrystal with uniform and controllable size and shape, and co-doped with rare earth ytterbium ions and thulium ions.

[0030] The method of ultra-strong multi-photon up-conversion nanocrystals, measure 1.6ml of 0.2mol / L yttrium acetate aqueous solution, 0.36ml of 0.2mol / L ytterbium acetate aqueous solution, 0.04ml of 0.2mol / L thulium acetate aqueous solution, with a purity of 90% 7ml of oleic acid and 7ml of 1-octadecene were placed in a three-necked flask, stirred and heated in the open at 150°C for 30 minutes; after cooling to room temperature, 4.3ml of methanol mixed solution of sodium hydroxide and ammonium fluoride was added, and the temperature was raised to 50 ℃, open the door and stir for 30 minutes; heat up to 100°C, after methanol volatilizes, pass in argon, continue to heat up to 290°C, keep warm for 90 minutes, and t...

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PUM

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Abstract

The invention relates to an ultra-strong multi-photon up-conversion nanocrystalline for super-resolution imaging. The ultra-strong multi-photon up-conversion nanocrystalline for super-resolution imaging is a hexagonal crystal monodisperse sodium yttrium tetrafluoro nanocrystalline with the average grain diameter of 20-50nm and rare earth ytterbium ions and thulium ions are co-doped in the nanocrystalline. The molar dosage concentration of ytterbium ions is 10-49% while the molar dosage concentration of thulium ions is 0.1-2%. The ultra-strong multi-photon up-conversion nanocrystalline for super-resolution imaging provided by the invention has the advantages that the monodisperse sodium yttrium tetrafluoro nanocrystalline which is prepared by way of nucleation / growth separation, rare earth ion type selection and dosage concentration regulating method has the characteristics of being uniform and controllable in side and shape, capable of generating ultra-strong multi-photon up-conversion luminescence and suitable for super-resolution imaging.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a super-intense multi-photon up-conversion nanocrystal for super-resolution imaging. Background technique [0002] The spatial resolution of optical microscopy imaging is limited by light diffraction, that is, the Abbe limit. New optical microscopy techniques that break through the Abbe limit have been an important scientific challenge in the past few years. Recently, in order to break through the diffraction limit in far-field fluorescence imaging, a series of new super-resolution techniques have emerged, including high-resolution photosensitive localization microscopy, stochastic optical reconstruction microscopy, and stimulated emission impairment microscopy. Among them, a major feature of stimulated emission impairment microscopy is that the lateral resolution can be increased by 10 to 15 times compared with the diffraction limit, which is considered to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
Inventor 周佳佳徐时清邹丹娜毛威孙薪雯郑威张军杰
Owner CHINA JILIANG UNIV
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