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Water-phase organic light-emitting material, preparation method and application of water-phase organic light-emitting material

A luminescent material and organic technology, applied in the field of electrochemical materials, can solve the problems of limited development and application prospects, low ECL efficiency, expensive precious metals, etc., and achieve the effects of inhibiting oxygen quenching, high material cost, and low material cost.

Pending Publication Date: 2022-06-24
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The water-phase pure organic ECL detection systems in the prior art are all limited by their common traditional fluorescent physical properties, resulting in low ECL efficiency, limited development and application prospects, and the cost of water-soluble ECL luminescent materials. Expensive precious metals have problems such as high material cost and certain toxicity. The purpose of the present invention is to provide a water-phase organic light-emitting material with high ECL efficiency, cheaper materials, low material cost and low toxicity, a preparation method and its application

Method used

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  • Water-phase organic light-emitting material, preparation method and application of water-phase organic light-emitting material

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Embodiment 1

[0054] In the first aspect, the present invention provides a water-phase organic light-emitting material, the water-phase organic light-emitting material is a co-functionalized nanoparticle prepared by using a material with aggregation-induced emission type thermally activated delayed fluorescence emission properties, that is, AI-DF emits light. The material is the core, the encapsulating polymer is the shell, and the AI-DF organic compound is made into water-soluble AI-DF nanoparticles.

[0055] In a second aspect, the present invention provides a method for preparing an aqueous organic light-emitting material, comprising the following steps:

[0056] Step 1. Preparation of precursor solution: Dissolve 200 μg TXO-TPA and 400 μg PSMA in 2 mL THF to obtain a precursor solution;

[0057] Step 2. Preparation of organic nanoparticles: with the aid of ultrasound, inject 2 mL of precursor solution into 10 mL of water; then remove THF and concentrate by vacuum rotary evaporation; fil...

Embodiment 2

[0060] The water-phase organic light-emitting material provided in this embodiment is a co-functionalized nanoparticle prepared by using a material with aggregation-induced emission type thermally activated delayed fluorescence light-emitting property, that is, the AI-DF light-emitting material is used as the core, and the encapsulating polymer is used as the shell layer. , AI-DF organic compounds were made into water-soluble AI-DF nanoparticles.

[0061] Among them, the selected aggregation-induced luminescence type thermally activated delayed fluorescence organic compound is 2-[p-N,N-diphenylamino-phenyl]-S-dioxanthone (2-[p-N,N-diphenylamino -phenyl]-S-dioxyethioxanthone, referred to as TXO-TPA), the material was purchased from Taiwan Machinery Optical Technology Co., Ltd.

[0062] Its chemical structural formula is as follows:

[0063]

[0064] The material is an AI-DF organic small molecule that does not contain any metal elements, is cheap and easy to obtain, has low...

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Abstract

The invention discloses a water-phase organic light-emitting material, a preparation method and application thereof, the water-phase organic light-emitting material is a functional organic nano particle prepared from a material with aggregation-induced emission type thermal activation delayed fluorescence light-emitting property, that is, an AI-DF light-emitting material is used as a core, a wrapping agent macromolecule is used as a shell layer, and the AI-DF light-emitting material is used as a shell layer. And preparing the AI-DF organic compound into the water-soluble AI-DF nano particles. And the AI-DF organic compound is 2-[p-N, N-diphenylamino-phenyl]-S-dioxathioxanthone, and the structural formula of the AI-DF organic compound is shown in the description. The wrapping agent macromolecules are polystyrene maleic anhydride. The AI-DF water-soluble nano-material can stably exist in a water-phase solvent, AIE and TADF properties of the AI-DF water-soluble nano-material are maintained, all singlet and triplet excitons generated under an electrical excitation condition can realize ECL luminescence in a TADF form, the AI-DF water-soluble nano-material can be widely applied to the fields of ECL water-phase sensing and detection and the like, and ECL performance is excellent and luminous efficiency is high.

Description

technical field [0001] The invention relates to the field of electrochemical materials, in particular to an aqueous organic light-emitting material, a preparation method and applications thereof. Background technique [0002] Electrochemiluminescence (Electrochemiluminescence or Electrogeneratedchemiluminescence, abbreviated as ECL) is the process of electrically exciting ECL active substances to cause high-energy electron transfer reactions on the electrode surface, thereby generating excited species and radiating light when they transition back to the ground state. At present, with the huge development of materials science and electrochemical technology, ECL theory and technology have been gradually established and become a powerful modern analytical sensing and detection method, including immunoassay, ion analysis, nucleic acid detection, water quality detection, etc. field, reflecting technological advantages. Compared with chemiluminescence, electrochemiluminescence ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06G01N27/30G01N21/76
CPCC09K11/025C09K11/06G01N27/308G01N21/76C09K2211/1092
Inventor 张保华罗野林牛利蓝叶滢陈咏晶胡书涵王希杰
Owner GUANGZHOU UNIVERSITY