Pure organic material with near-infrared phosphorescence emission as well as preparation method and application of pure organic material

A phosphorescent emission and organic material technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of short wavelength and low mass production, and achieve the effects of stable luminescence properties, wide sources, and long phosphorescence life

Active Publication Date: 2021-05-11
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, it is necessary to provide a new pure organic material with near-infrared phosphorescent emission and a preparation method to overcome the defects of low mass production and relatively short wavelength of near-infrared emission of existing organic phosphorescent materials.

Method used

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  • Pure organic material with near-infrared phosphorescence emission as well as preparation method and application of pure organic material
  • Pure organic material with near-infrared phosphorescence emission as well as preparation method and application of pure organic material
  • Pure organic material with near-infrared phosphorescence emission as well as preparation method and application of pure organic material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The pure organic material with near-infrared phosphorescent emission provided in this example comprises a guest material compound 1 (the structural formula is shown in formula I-1) and a host material polyvinyl alcohol (the structural formula is shown in formula II-1). Both were purchased directly from reagent companies. The specific steps for preparing pure organic materials with near-infrared phosphorescent emission by solvent method are:

[0031] Compound 1 and polyvinyl alcohol were completely dissolved to make an aqueous solution, and then the two aqueous solutions were fully miscible to obtain a mixed solution (the mass ratio of compound 1 and polyvinyl alcohol was 1:100). The water in the system was removed from the mixed solution through a rotary evaporator to obtain a doped film. After vacuum drying the doped film for 12 h, a pure organic amorphous material with near-infrared phosphorescent emission was obtained. Its absolute phosphorescent quantum yield (int...

Embodiment 2

[0033] The pure organic material with near-infrared phosphorescence emission provided in this embodiment includes compound 2 (the structural formula is shown in formula I-2) and polyvinyl alcohol (the structural formula is shown in formula II-1). Both were purchased directly from reagent companies. The specific steps for preparing pure organic materials with near-infrared phosphorescent emission by solvent method are:

[0034] Compound 2 and polyvinyl alcohol were completely dissolved to make an aqueous solution, and then the two aqueous solutions were fully miscible to obtain a mixed solution (the mass ratio of compound 2 and polyvinyl alcohol was 1:100). The water in the system was removed from the mixed solution through a rotary evaporator to obtain a doped film. After vacuum drying the doped film for 12 h, a pure organic amorphous material with near-infrared phosphorescent emission was obtained. Its absolute phosphorescent quantum yield (integrating sphere method) is 2.6...

Embodiment 3

[0036] The pure organic material with near-infrared phosphorescent emission provided in this embodiment includes compound 3 (the structural formula is shown in formula I-3) and polyvinyl alcohol (the structural formula is shown in formula II-1). The specific steps for preparing pure organic materials with near-infrared phosphorescent emission by solvent method are:

[0037] Compound 3 and polyvinyl alcohol were completely dissolved to make an aqueous solution, and then the two aqueous solutions were fully miscible to obtain a mixed solution (the mass ratio of compound 3 and polyvinyl alcohol was 1:100). The water in the system was removed from the mixed solution through a rotary evaporator to obtain a doped film. After vacuum drying the doped film for 12 h, a pure organic amorphous material with near-infrared phosphorescent emission was obtained. Its absolute phosphorescent quantum yield (integrating sphere method) is 3.0%, and the phosphorescent emission peak is around 819nm...

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Abstract

The invention relates to a pure organic material with near-infrared phosphorescence emission as well as a preparation method and application thereof. The pure organic material with near-infrared phosphorescence emission comprises a host material and a guest material. The guest material is an organic molecule which has electron donor and acceptor structures and contains a heavy atom modification group, and comprises but is not limited to a phenol sulfone phthalocyanine derivative and the like. The main body material is a polymer matrix such as polyvinyl alcohol and polyacrylamide. After the guest material is doped in the host material, a pure organic near-infrared phosphorescent material with emission greater than or equal to 750 nm and near-infrared phosphorescent mass production up to 3% can be obtained. The invention also discloses application of the phosphorescent material in the fields of photoelectric materials, biology and the like.

Description

technical field [0001] The present application relates to the technical field of luminescent materials, in particular to a pure organic material with near-infrared phosphorescent emission and its preparation method and application. Background technique [0002] Phosphorescent luminescent materials are popular because of their longer luminescent lifetime and higher energy utilization compared with fluorescence. Among them, pure organic room temperature phosphorescent materials without heavy metal elements are lower in cost, less toxic and easy to prepare. Raw materials are easy to obtain It is widely used in chemical sensing, biological imaging and organic optoelectronic materials. However, the large non-radiative rate constant and small spin-orbit coupling of most organic compounds make the development of efficient pure organic room-temperature phosphorescent materials still extremely challenging. [0003] In addition, there are currently very few reports on all organic roo...

Claims

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Application Information

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IPC IPC(8): C09K11/06C09K11/02
CPCC09K11/06C09K11/025
Inventor 马骧孙思宇田禾
Owner EAST CHINA UNIV OF SCI & TECH
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