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Light-emitting material and preparation method thereof

A luminescent material, selected technology, applied in luminescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of poor stability and low luminous efficiency, and achieve high stability, high luminous life, efficiency and light stability Improved effect

Active Publication Date: 2018-07-10
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a luminescent material and its preparation method to solve the problems of low luminous efficiency and poor stability of near-infrared luminescent materials in the prior art

Method used

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  • Light-emitting material and preparation method thereof
  • Light-emitting material and preparation method thereof
  • Light-emitting material and preparation method thereof

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preparation example Construction

[0055] In another typical embodiment of the present application, a preparation method of the above-mentioned luminescent material is provided, the preparation method comprising: 1) making the tetrapyrrole macrocyclic ligand and the rare earth salt react in an organic solvent at 100-300°C to obtain an intermediate product; 2) react the intermediate product with a deuterated or halogenated tripod ligand in a second organic solvent to obtain a luminescent material. The process of the above preparation method is simple, easy to operate, and the reaction conditions are relatively mild, so it is beneficial to the preparation of the luminescent material of the present application.

[0056] In order to better adapt to the reaction of each step, preferably the above-mentioned first organic solvent is selected from any one or more of the group consisting of trichlorobenzene, decahydronaphthalene, dimethyl sulfoxide, o-dichlorobenzene, n-hexanol and toluene A mixture of species, preferab...

Embodiment 1

[0065] The intermediate product is obtained by mixing the phthalocyanine ligand and the corresponding rare earth acetylacetonate in trichlorobenzene and reacting at 200°C under a nitrogen atmosphere. The resulting intermediate and the corresponding deuterated The tripod ligand was reacted in chloroform to obtain a sandwich-type complex luminescent material. The emission main peak position, excitation main peak position and external quantum efficiency are shown in Table 1.

Embodiment 2

[0067] The intermediate product was obtained by mixing the corole ligand and rare earth acetylacetonate in trichlorobenzene and reacting at 200°C under nitrogen atmosphere. Then react the obtained intermediate product with the fluorinated Tp tripod ligand in chloroform to obtain a sandwich-type complex luminescent material.

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Abstract

The invention provides a light-emitting material and a preparation method thereof. The light-emitting material includes an organic complex; the organic complex is composed of tetrapyrrole macrocyclicligand A, rare-earth ion Ln and deuterated or halogenated tripodal ligand B. The organic complex gains increased external quantum dot efficiency and improved light emergence stability; near-infrared light (800-1600 nm) can be emitted efficiently under purple and blue light excitation; external quantum efficiency is high, light emission life is long, wherein the external quantum efficiency may reach 0.63 and above. In addition, emitting peak position and width can be regulated and controlled through different rare-earth ion or rear-earth ion combinations so as to improve the light-emitting performance of the light-emitting material. The light-emitting material has a promising application prospect in fiber-optic communication, biological imaging, signal conversion and amplification and component analysis fields.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a luminescent material and a preparation method thereof. Background technique [0002] As a rare earth luminescent material, near-infrared luminescent materials have good application prospects in the fields of optical fiber communication, biological imaging, signal conversion and amplification, and component analysis. Near-infrared luminescent materials invented at home and abroad are mainly oxides of photoluminescent transition metals or rare earth metals, or electroluminescent organic complexes (Chem.–Eur.J.,2012,18,1961–1968; Adv .Mater.,2009,21,111–116; Chem.Commun.,2011,14,1833–1837; Adv.Funct.Mater.,2009,19,2639–2647), the main problem currently limiting the application of near-infrared luminescent materials is It has low luminous efficiency and poor stability. Contents of the invention [0003] The main purpose of the present invention is to provide a luminescent m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07F15/06C07F5/05
CPCC07F5/05C07F15/06C09K11/06C09K2211/182C09K2211/187
Inventor 张俊龙胡继云刘荣辉刘元红宁莹莹马小乐
Owner PEKING UNIV
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