A kind of fluorescent substance based on amino acid deep eutectic solvent and preparation method thereof

A technology of deep eutectic solvents and fluorescent substances, applied in the field of fluorescent substances, can solve the problems of insufficient environmental protection of organic solvents, poor stability of fluorescent substances, high energy consumption, etc., and achieve uniform luminescence effect, good thermal stability, and simple process Effect

Active Publication Date: 2022-07-08
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of using a large amount of volatile and highly polluting organic solvents in the preparation process of the existing fluorescent powder, which is not environmentally friendly, high in cost, high in energy consumption, and poor in stability of the fluorescent substance, the present invention provides a fluorescent substance based on an amino acid deep eutectic solvent and its preparation method

Method used

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  • A kind of fluorescent substance based on amino acid deep eutectic solvent and preparation method thereof
  • A kind of fluorescent substance based on amino acid deep eutectic solvent and preparation method thereof
  • A kind of fluorescent substance based on amino acid deep eutectic solvent and preparation method thereof

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Embodiment 1

[0026] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent and europium chloride hexahydrate, wherein the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 15.3:1, so The deep eutectic solvent is composed of glycerol and L-glutamic acid with a molar ratio of 8:1, and europium chloride hexahydrate is prepared by reacting europium oxide with concentrated hydrochloric acid.

[0027] The above-mentioned preparation method of the fluorescent substance based on the amino acid deep eutectic solvent comprises the following steps:

[0028] (1) take by weighing glycerol and L-glutamic acid according to described raw material proportioning, europium oxide and concentrated hydrochloric acid;

[0029] (2) 0.16mol (14.81g) of glycerol and 0.02mol (2.94g) of L-glutamic acid are subjected to mixing treatment, the temperature is raised to 110°C, and the constant temperature reaction is perf...

Embodiment 2

[0033] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent and europium chloride hexahydrate, wherein the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 14:1, so the The deep eutectic solvent is composed of glycerol and L-arginine with a molar ratio of 6:1, and europium chloride hexahydrate is prepared by reacting europium oxide and concentrated hydrochloric acid.

[0034] The above-mentioned preparation method of the fluorescent substance based on the amino acid deep eutectic solvent comprises the following steps:

[0035] (1) take by weighing glycerol and L-arginine, europium oxide and concentrated hydrochloric acid according to described raw material proportioning;

[0036] (2) mixing 0.06mol (5.53g) glycerol and 0.01mol (1.74g) L-arginine, heating to 110°C, and reacting at constant temperature for 5h to obtain a deep eutectic solvent;

[0037] (3) Mix europium oxide...

Embodiment 3

[0040] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent and europium chloride hexahydrate, wherein the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 12.8:1, so the The deep eutectic solvent is composed of ethylene glycol and L-arginine with a molar ratio of 5:1, and europium chloride hexahydrate is prepared by reacting europium oxide and concentrated hydrochloric acid.

[0041] The above-mentioned preparation method of the fluorescent substance based on the amino acid deep eutectic solvent comprises the following steps:

[0042] (1) take by weighing ethylene glycol and L-arginine, europium oxide and concentrated hydrochloric acid according to the described raw material proportioning;

[0043] (2) 0.1 mol (6.21 g) of ethylene glycol and 0.02 mol (3.48 g) of L-arginine are mixed and processed, the temperature is raised to 90° C., and a constant temperature reaction is ...

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Abstract

The invention relates to the technical field of chemical industry, and specifically discloses a fluorescent substance based on an amino acid deep eutectic solvent and a preparation method thereof. The fluorescent substance based on amino acid deep eutectic solvent includes the following components: deep eutectic solvent and rare earth chloride, the mass ratio of the deep eutectic solvent to rare earth chloride is 10-20:1, the rare earth chloride The compound is at least one of europium chloride, lanthanum chloride, terbium chloride or gadolinium chloride, and the deep eutectic solvent is composed of an alcohol compound and an amino acid with a molar ratio of 5-10:1. The fluorescent substance based on the amino acid deep eutectic solvent provided by the invention can achieve a uniform light-inducing effect, has good quality and thermal stability, and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of fluorescent substances, in particular to a fluorescent substance based on an amino acid deep eutectic solvent and a preparation method thereof. Background technique [0002] At present, in the preparation process of fluorescent substances, a large number of volatile and polluting organic solvents are used, which are not friendly to the environment. Traditional fluorescent materials generally use fluorescent powder systems. At present, the systems that can be practically applied mainly include: yttrium aluminum garnet oxide, alkaline earth metal silicon (aluminum) salt, nitrogen (nitrogen oxide) compound, sulfur (sulfur oxide) compound, etc. There are problems such as low efficiency, poor thermal stability, and it is difficult to achieve uniform particle size of phosphors. In addition, the preparation process of phosphors is generally high temperature, which requires a lot of energy and high cost. Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/07C09K11/02
CPCC09K11/02C09K11/07Y02E10/52
Inventor 段二红王雪任红威宫睿全张优关亚楠韩静俞磊
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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