Super-long room-temperature phosphorescent hydrogel material and preparation method thereof

A technology of room temperature phosphorescence and hydrogel, applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of reduced phosphorescence intensity, strong non-radiative transition, and difficulty in ultra-long organic phosphorescence, and achieves cheap raw materials and simple synthesis methods Effect

Pending Publication Date: 2022-07-29
海峡创新实验室
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the water content is greater than 20%, the phosphorescence intensity decreases with the increase of water content
In addition, hydrogels often have high water content. In hydrogels, due to the weak dynamic intermolecular forces, the non-radiative transition is strong, and the quenching of triplet excitons by water makes hydrogels realize Ultra-long organic phosphorescence is more difficult

Method used

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  • Super-long room-temperature phosphorescent hydrogel material and preparation method thereof
  • Super-long room-temperature phosphorescent hydrogel material and preparation method thereof
  • Super-long room-temperature phosphorescent hydrogel material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] Weigh 60 mg of pyromellitic acid and isonicotine (57.5 mg), add them to a 25 mL hydrothermal kettle, and add 5 mL of deionized water. After sealing, put it in an oven, set the temperature to 140°C, heat for 22 hours, turn off the oven, and let it slowly cool to room temperature to obtain a white hydrogel with a uniform texture.

Embodiment 2

[0025] Weigh 60 mg of trimesic acid and 52.8 mg of 2-picolinic acid, add them into a 25 mL hydrothermal kettle, and add 5 mL of deionized water. After sealing, put it in an oven, set the temperature to 120°C, heat for 16 hours, turn off the oven, and let it slowly cool to room temperature to obtain a white hydrogel with a uniform texture.

Embodiment 3

[0027] Weigh 50 mg of 2,6-pyridinedicarboxylic acid and 28.5 mg of 3-hydroxypyridine, add them to a 25 mL hydrothermal kettle, and add 5 mL of deionized water. After sealing, put it in an oven, set the temperature to 120°C, heat for 8 hours, turn off the oven, and let it slowly cool to room temperature to obtain a white hydrogel with a uniform texture.

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Abstract

The invention discloses a super-long room-temperature phosphorescent hydrogel material and a preparation method thereof. The hydrogel material is formed by self-assembly of aromatic acid containing carboxyl and a pyridyl derivative supramolecule. The invention has the following characteristics: (1) the material is synthesized by a hydrothermal method, the raw materials are cheap, and the synthesis method is simple; (2) the synthesized material has an ultra-long room-temperature phosphorescence luminescence phenomenon; (3) the hydrogel is formed by interweaving nanowires; and (4) the material can be subjected to 3D printing to form various models. The hydrogel material disclosed by the invention is applied to the field of biological photoelectronics, and can be applied to human health condition detection, biological marking and the like. The organic luminescent gel material is a novel pure organic long afterglow material with huge commercial potential.

Description

technical field [0001] The invention belongs to the field of hydrogel materials, in particular to an ultra-long room temperature phosphorescent hydrogel material and a preparation method thereof. technical background [0002] Ultra-long room temperature phosphorescence, also known as long afterglow, is an interesting optical phenomenon. When the excitation light source is removed, the ultralong room-temperature phosphorescent material can continue to emit light for seconds, minutes, or even hours. Due to the advantages of long lifetime, large Stokes shift and high exciton utilization, such materials have a wide range of applications in lighting display, data encryption and anti-counterfeiting, biological imaging, organic electroluminescent diodes and other fields. Phosphorescence is produced by triplet exciton radiative transitions. Generally, triplet excitons are easily quenched by water vapor and oxygen, etc. A common method to isolate water vapor and oxygen is to cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L87/00C08G83/00C09K11/06
CPCC08J3/075C08G83/008C09K11/06C09K2211/1007C09K2211/1029C08J2387/00
Inventor 蔡素芝黄维
Owner 海峡创新实验室
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