Bidirectional transition luminescent material and preparation method thereof

A luminescent material, bidirectional conversion technology, applied in luminescent materials, chemical instruments and methods, wave energy or particle radiation treatment materials, etc., to achieve the effects of good biocompatibility, clear imaging, and strong conversion fluorescence performance
CN104403660AInactive Publication Date: 2015-03-11WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2015-03-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a bidirectional transition luminescent material and a preparation method thereof. Diazoacetate and alkene of which double bonds connected to an electrophilic group undergo 1,3-dipolar cycloaddition reaction to produce the bidirectional transition luminescent material. The bidirectional transition luminescent material is a polymer of which the side chain is connected to a pyrazoline group with fluorescence performances or a pyrazoline monomer contains other groups so that the material has special bidirectional transition luminescence performances. The bidirectional transition luminescent material can emit fluorescence with the same wavelength, can image in organisms under the actions of near infrared excitation and near ultraviolet excitation, can produce dual wavelength-excited fluorescence with intensity higher than that of fluorescence produced by single wavelength excitation and can further improve fluorescence imaging sharpness.
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Description

technical field

[0001] The invention relates to a class of luminescent materials and a preparation method thereof, in particular to a bidirectional conversion luminescent material containing pyrazoline and a preparation method thereof, belonging to the technical field of luminescent materials. Background technique

[0002] Up-conversion luminescent material is a new type of fluorescent material that absorbs long-wavelength and low-energy photons and emits short-wavelength high-energy photons. It has excellent optical stability and high chemical stability, and has tissue penetration ability under near-infrared light excitation. Deep, no damage to biological tissue, almost zero background fluorescence interference, high imaging sensitivity and many other advantages, so it has a wide range of application prospects in biomedicine. However, the traditional up-conversion luminescent materials are all doped with rare earth metals, mainly fluorides and oxyfluorides, so their biologi...

Claims

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