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Color-adjustable organic room-temperature phosphorescent thin film material with hydrothermal stimulation response and preparation and application of color-adjustable organic room-temperature phosphorescent thin film material

A stimuli-responsive, thin-film material technology, applied in the field of room temperature phosphorescence, can solve problems such as the difficulty of light-emitting materials, and achieve the effects of low price, promotion of room temperature phosphorescence emission, and simple preparation method

Pending Publication Date: 2022-05-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, it is more difficult to develop luminescent materials that can dynamically change the emission color according to external stimuli.
Therefore, it remains a great challenge to realize the response to external stimuli and excitation-dependent room temperature phosphorescence.

Method used

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  • Color-adjustable organic room-temperature phosphorescent thin film material with hydrothermal stimulation response and preparation and application of color-adjustable organic room-temperature phosphorescent thin film material
  • Color-adjustable organic room-temperature phosphorescent thin film material with hydrothermal stimulation response and preparation and application of color-adjustable organic room-temperature phosphorescent thin film material
  • Color-adjustable organic room-temperature phosphorescent thin film material with hydrothermal stimulation response and preparation and application of color-adjustable organic room-temperature phosphorescent thin film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation method of organic room-temperature phosphorescent film material with adjustable color in response to hydrothermal stimulation:

[0034] Phosphorescent film material Preparation of polymer film (m-Bp-BOH-PVA) with structural formula (VII) containing 3-biphenylboronic acid.

[0035]

[0036] Polyvinyl alcohol is selected as the rigid matrix polymer, and 3-biphenylboronic acid is selected as the phosphorescent chromophore. Stir 3 mL of 160 g / L polyvinyl alcohol aqueous solution, 4 mL of 1.25 g / L 3-biphenylboronic acid aqueous solution and 1 mL of ammonia water at 80°C for 30 min. Take 0.7mL of the prepared aqueous solution and drop it on the coverslip. Then, heat the coverslip at 80°C until all the water evaporates, and cool to room temperature to obtain a polymer film containing 3-biphenylboronic acid.

Embodiment 2

[0037] Example 2: Phosphorescent film material Preparation of polymer film (m-Bp-BOH-PVA) with structural formula (VII) containing 3-biphenylboronic acid. Polyvinyl alcohol is selected as the rigid matrix polymer, and 3-biphenylboronic acid is selected as the phosphorescent chromophore. Stir 3 mL of 500 g / L polyvinyl alcohol aqueous solution, 4 mL of 1 g / L 3-biphenylboronic acid aqueous solution and 0.5 mL of ammonia water at 65°C for 20 min. Take 0.7mL of the prepared aqueous solution and drop it on the coverslip. Then, heat the coverslip at 90°C until all the water evaporates, and cool to room temperature to obtain a polymer film containing 3-biphenylboronic acid.

Embodiment 3

[0038] Example 3: Phosphorescent film material Preparation of a polymer film (m-Bp-BOH-PVA) with structural formula (VII) containing 3-biphenylboronic acid. Polyvinyl alcohol is selected as the rigid matrix polymer, and 3-biphenylboronic acid is selected as the phosphorescent chromophore. Stir 3 mL of 300 g / L polyvinyl alcohol aqueous solution, 4 mL of 3 g / L 3-biphenylboronic acid aqueous solution and 5 mL of ammonia water at 90°C for 10 min. Take 0.7mL of the prepared aqueous solution and drop it on the coverslip. Then, heat the cover glass at 65°C until all the water evaporates, and cool to room temperature to obtain a polymer film containing 3-biphenylboronic acid.

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Abstract

The invention belongs to the field of room-temperature phosphorescence, and particularly relates to a color-adjustable organic room-temperature phosphorescence thin-film material with hydrothermal stimulation response as well as preparation and application of the organic room-temperature phosphorescence thin-film material. The film material comprises a PVA rigid matrix main chain and a plurality of phosphorescent chromophores combined on the main chain; the phosphorescent chromophore is one of 3-biphenyl boric acid, 4-biphenyl boric acid, 1-naphthalene boric acid, 4-(1-naphthalene)-1-naphthalene boric acid and 1-pyrene boric acid. The phosphorescent chromophore provided by the invention can control the room-temperature phosphorescent property through external stimulation of heat and water. In addition, adjustment of the afterglow color is achieved.

Description

technical field [0001] The invention belongs to the field of room temperature phosphorescence, and in particular relates to a color-tunable organic room temperature phosphorescence thin film material with hydrothermal stimulus response and its preparation and application. Background technique [0002] Stimuli-responsive luminescent materials refer to a class of smart materials that undergo physical or chemical changes when subjected to external stimuli such as mechanical force, heat, light, and acid-base. Stimuli-responsive luminescent materials have attracted great interest in recent years due to their wide potential applications in information storage, anti-counterfeiting and optoelectronic devices. However, most of the previous reports were based on the stimulus response properties of fluorescent materials (Nat.Commun.9,3977.; J.Am.Chem.Soc.141 17601–17609; Angew.Chem. 7989.), while studies on the stimuli-responsive properties of room temperature phosphorescence (RTP) ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/42C08F16/06C08L29/04C08J5/18C09D11/50C09D11/106C09K11/06
CPCC08F8/42C08J5/18C09D11/50C09D11/106C09K11/06C08J2329/04C09K2211/14C08F16/06
Inventor 李振李丹杨杰方曼曼
Owner TIANJIN UNIV
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