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Novel efficient blue room-temperature phosphorescent material and preparation method thereof

A room temperature phosphorescence, a new type of technology, applied in the direction of luminescent materials, organic chemical methods, chemical instruments and methods, etc., can solve the problems of short distance, difficulty of blue hybrid RTP materials, etc. simple effect

Pending Publication Date: 2021-06-25
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, we have used metal ions to coordinate with organic light-emitting units to construct hybrid RTP materials. However, in most hybrid RTP materials, the distance between adjacent organic units is relatively close, and there is a coupling effect. The RTP color is mostly located in the yellow-green region, and the blue Hybrid RTP materials are very difficult

Method used

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  • Novel efficient blue room-temperature phosphorescent material and preparation method thereof
  • Novel efficient blue room-temperature phosphorescent material and preparation method thereof
  • Novel efficient blue room-temperature phosphorescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this example, zinc oxide (0.080~0.166g, 1~2mmol) and terephthalic acid (0.080~0.166g, 1~2mmol) were added to a 20mL polytetrafluoroethylene-lined stainless steel reaction kettle, and 10mL of water and formaldehyde Dissolve the mixed solution of amine (0.7~0.9mL), add hydroxyethylidene diphosphonic acid monohydrate (0.11~0.22g, 0.5~1mmol) and hydrofluoric acid (0.2mL) while stirring, after fully stirring, put the Seal the stainless steel reaction kettle with the reaction solution, and crystallize it in an oven at 80°C for 6-7 days. After the reaction is completed, take out the stainless steel reaction kettle and let it cool naturally at room temperature, remove the crystals generated in the stainless steel reaction kettle and wash it with deionized water Washing was repeated 5 times, and drying at room temperature gave colorless flaky crystals, which were designated as compound 1.

[0030] In this example, the prepared compound 1 was subjected to single crystal diffra...

Embodiment 2

[0032] In this example, zinc oxide (0.080~0.166g, 1~2mmol) and terephthalic acid (0.080~0.166g, 1~2mmol) were added to a 20mL polytetrafluoroethylene-lined stainless steel reaction kettle, and 5mL water and 5mL The mixed solution of N,N-dimethylformamide (1:1) was dissolved, and hydroxyethylidene diphosphonic acid monohydrate (0.11~0.22g, 0.5~1mmol) and hydrofluoric acid (0.2mL) were added while stirring , after fully stirring, seal the stainless steel reactor containing the reaction solution, and crystallize in an oven at 145° C. for 6-7 days. After the reaction is completed, the method of cooling, washing and drying as in Example 1 is obtained to obtain compound 2 , the various characterizations of the target product obtained are the same as in Example 1.

[0033] In this example, compound 2 was subjected to single crystal diffraction, and the data analysis showed that compound 2 is isomorphic with compound 1, and has a columnar layer structure, and protonated dimethylamine ...

Embodiment 3

[0035] In this example, zinc oxide (0.080~0.166g, 1~2mmol), and terephthalic acid (0.080~0.166g, 1~2mmol) were added to a 20mL polytetrafluoroethylene-lined stainless steel reaction kettle, and 5mL of water and 5mL N,N-diethylformamide mixed solution (1:1) was dissolved, and hydroxyethylidene diphosphonic acid monohydrate (0.11~0.3g, 0.5~1.5mmol) and hydrofluoric acid (0.2mL ), after fully stirring, the stainless steel reaction kettle with the reaction solution was sealed, crystallized in an oven at 145°C for 6-7 days, after the reaction was completed, the compound was obtained by cooling, washing and drying as in Example 1 3. The characteristics of the obtained target product are the same as in Example 1.

[0036] This embodiment carries out single crystal diffraction to compound 2 and 3, and its data analysis shows that compound 3 is isomorphic with compound 1, has column layer structure, and protonated dimethylamine and diethylamine are filled in interlayer as guest ( fig...

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Abstract

The invention belongs to the technical field of luminescent material synthesis, and relates to a novel efficient blue room-temperature phosphorescent material and a preparation method thereof. Based on a coordination driving strategy, an organic N / O unit with potential phosphorescent behavior is coordinated and dispersed in a metal phosphonic acid supramolecular building block, the organic unit is coordinated and anchored through a rigid metal phosphonate matrix, meanwhile, an object with matched charge and size is introduced by virtue of host-object chemistry, and the host-object interaction is utilized to further enhance and limit the organic light-emitting unit to inhibit non-radiative transition and optimize the room-temperature phosphorescence performance. The preparation method is simple, the raw materials are easy to obtain, the cost is low, the consumed time is short, the phosphorescence quantum yield in the prepared room-temperature phosphorescence material is up to 80.7%, and object induction is adjustable.

Description

Technical field: [0001] The invention belongs to the technical field of luminescent material synthesis, and relates to a novel high-efficiency blue room-temperature phosphorescent material and a preparation method thereof. Background technique: [0002] Room temperature phosphorescence (RTP, room temperature phosphorescence) materials have important applications in display imaging, anti-counterfeiting, biomedicine and other fields. Traditional RTP materials are mostly inorganic compounds, such as transition metal sulfides, alkaline earth metal aluminates / silicates, etc. Inorganic RTP materials have many shortcomings such as poor processability, high cost, high biological toxicity, and difficulty in large-scale preparation. In contrast, pure organic phosphorescent materials are easy to modify, have good processability, low toxicity, and good biocompatibility. However, the singlet excited state (Sn) and triplet excited state (Tn) of pure organic compounds The spin-orbit coupl...

Claims

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Application Information

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IPC IPC(8): C07F9/38C09K11/06
CPCC07F9/3808C09K11/06C09K2211/188C07B2200/13
Inventor 李金花王国明刘浩浩
Owner QINGDAO UNIV
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