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A kind of organic-inorganic composite water-based latex with fluorescent light-emitting characteristics and preparation method thereof

A technology with luminescent properties and composite water, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of excitation energy dissipation, application limitations and weakening of organic fluorescent small molecule materials, and achieve the purpose of overcoming aggregation-induced quenching effects, reaction Simple, effective, controllable, expanding types and application effects

Active Publication Date: 2019-03-26
SUZHOU JIREN HIGH TECH MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon is determined by its molecular structure. Traditional fluorescent molecules generally have a molecular structure with a large conjugated fair plane, resulting in strong intermolecular forces between molecules, that is, π-π stacking (similar to H-aggregates). effect), the phenomenon of electron transition dipole moment inside the molecule produced by it leads to the formation of excited groups between fluorescent molecules when they are in an aggregated state (solid state or dispersed in a poor solvent), which usually leads to excitation energy Dissipated in a non-radiative form, the fluorescence emitted by fluorescent molecules will be red-shifted and the intensity will be reduced
Due to this aggregation quenching effect, the application of traditional organic fluorescent small molecule materials in fluorescent materials is limited.
Limits the preparation and application of fluorescent materials

Method used

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  • A kind of organic-inorganic composite water-based latex with fluorescent light-emitting characteristics and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An organic-inorganic composite water-based latex with fluorescent properties, comprising:

[0037] Fluorescent organic montmorillonite, 1wt%;

[0038] Acrylate mixture, 60wt%;

[0039] Deionized water, 35wt%;

[0040] Initiator ammonium persulfate, 1wt%;

[0041] Emulsifier Sodium dodecyl sulfonate, 3wt%.

[0042] Among them, the acrylate mixture includes:

[0043] Methyl methacrylate, 20wt%;

[0044] Styrene, 20wt%;

[0045] Butyl acrylate, 30wt%;

[0046] Isooctyl acrylate, 25wt%;

[0047] Acrylic acid, 5 wt%.

[0048] Fluorescent organic montmorillonite was prepared by the following steps:

[0049] The first step: Weigh the sodium montmorillonite with a cation exchange capacity of 120mmol / 100g and a size of 300 mesh, use an ultrasonic disperser with a power range of 100W, and ultrasonically disperse at room temperature for 30 minutes to disperse it in water to form 1% Sodium montmorillonite suspension;

[0050] Step 2: Dissolve (E)-4,4'-(1,2-diphenyl-1,2-e...

Embodiment 2

[0056] An organic-inorganic composite water-based latex with fluorescent properties, comprising:

[0057] Fluorescent organic montmorillonite, 2.5wt%;

[0058] Acrylate mixture, 50wt%;

[0059] Deionized water, 42.4wt%;

[0060] Initiator ammonium persulfate, 0.6wt%;

[0061] Emulsifier sodium lauryl sulfonate, 4.5 wt%.

[0062] Among them, the acrylate mixture includes:

[0063] Methyl methacrylate, 40wt%;

[0064] Styrene, 10wt%;

[0065] Butyl acrylate, 19wt%;

[0066] Isooctyl acrylate, 30wt%;

[0067] Acrylic acid, 1 wt%.

[0068] Fluorescent organic montmorillonite was prepared by the following steps:

[0069] The first step: Weigh the sodium-based montmorillonite with a cation exchange capacity of 120mmol / 100g and a size of 400 mesh, use an ultrasonic disperser with a power range of 200W, and ultrasonically disperse at room temperature for 25 minutes to disperse it in water to form a 3% Sodium montmorillonite suspension;

[0070] Step 2: Dissolve (E)-4,4'-(1,2-...

Embodiment 3

[0076] An organic-inorganic composite water-based latex with fluorescent properties, comprising:

[0077] Fluorescent organic montmorillonite, 3.9wt%;

[0078] Acrylate mixture, 40wt%;

[0079] Deionized water, 55wt%;

[0080] Initiator ammonium persulfate, 0.1wt%;

[0081] Emulsifier sodium dodecyl sulfonate, 1 wt%.

[0082] Among them, the acrylate mixture includes:

[0083] Methyl methacrylate, 35wt%;

[0084] Styrene, 15% by weight;

[0085] Butyl acrylate, 10wt%;

[0086] Isooctyl acrylate, 27wt%;

[0087] Acrylic acid, 3 wt%.

[0088] Fluorescent organic montmorillonite was prepared by the following steps:

[0089] The first step: Weigh the sodium montmorillonite with a cation exchange capacity of 120mmol / 100g and a size of 500 mesh, use an ultrasonic disperser with a power range of 300W, and ultrasonically disperse at room temperature for 15 minutes to disperse it in water to form a 5% Sodium montmorillonite suspension;

[0090] Step 2: Dissolve (E)-4,4'-(1,2...

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Abstract

The invention discloses an organic-inorganic composite water-borne emulsion with fluorescent light emitting characteristic and a preparation method thereof. The organic-inorganic composite water-borne emulsion with the fluorescent light emitting characteristic is prepared from the following raw materials of 1 to 5wt% of fluorescent organic montmorillonite, 35 to 60wt% of acrylic ester mixture, 35 to 55wt% of deionized water, 0.1 to 1wt% of initiator, and 1 to 5wt% of emulsifier. The prepared organic-inorganic composite water-borne emulsion with fluorescent light emitting characteristic has the aggregation-induced light emitting characteristic, and can be applied to the field of biology or optics.

Description

technical field [0001] The invention relates to a composite water-based latex, in particular to an organic-inorganic composite water-based latex with fluorescent properties and a preparation method thereof. Background technique [0002] With the development and progress of science and technology, the research and application of luminescent materials are becoming more and more extensive. Fluorescence is a kind of cold luminescence phenomenon of photoluminescence. When a substance at room temperature is irradiated by incident light of a certain wavelength (usually ultraviolet or X-ray), it absorbs light energy and enters an excited state, and immediately de-excites and emits outgoing light with a wavelength longer than that of the incident light (usually at a wavelength of Visible light band); and once the incident light is stopped, the luminescent phenomenon will disappear immediately. Fluorescent materials are widely used, and can be widely used in the fields of biology, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/06C08F2/26C08K9/04C08K3/34C09K11/02C09K11/06
CPCC08F2/26C08F220/14C08F220/18C08F220/1804C08K3/346C08K9/04C09K11/025C09K11/06C09K2211/1007C08F220/1808C08F212/08C08F220/06
Inventor 李为立徐泽孝
Owner SUZHOU JIREN HIGH TECH MATERIAL CO LTD
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