A new ag coordination polymer crystal material and its preparation method and application

A technology of coordination polymers and crystal materials, applied in the field of optical materials, can solve the problems of fluorescence quenching, luminophores affecting luminescence performance, difficulty in obtaining spherical particles, etc., and achieve the effect of a simple method

Active Publication Date: 2021-07-02
SOUTH CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the traditional preparation method of inorganic fluorescent materials is high-temperature solid-phase method, but with the rapid update of new technologies, the improvement of performance indicators of luminescent materials needs to overcome the inherent defects of classical synthesis methods, such as high reaction temperature and large particle size of products And the distribution is uneven, the crystal form of the luminescent body is destroyed after calcining and crushing, which affects the luminescent performance, and it is difficult to obtain spherical particles, etc.
There are many kinds of organic small molecule light-emitting materials in organic fluorescent materials. Most of them have conjugated heterocycles and various chromophores, and their structures are easy to adjust. group to change its conjugation length, thereby changing its optical properties, but small molecule luminescent materials are prone to fluorescence quenching in the solid state

Method used

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  • A new ag coordination polymer crystal material and its preparation method and application
  • A new ag coordination polymer crystal material and its preparation method and application
  • A new ag coordination polymer crystal material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A new type of coordination polymer crystal material Ag( mu -aca)( mu 4 -bztpy) 1 / 2 , prepared by the following steps:

[0036] 0.05mmol Ag 2 O was added to 2 mL of fresh NH 3 ·H 2 Dissolve in O, add 0.1mmol 9-anthracenecarboxylic acid to 2mL absolute ethanol for ultrasonic dissolution, take 0.05mmol bztpy ligand and add it to 6mL absolute ethanol for ultrasonic dissolution, then add 9-anthracenecarboxylic acid and bztpy ligand The ethanol solution was added to the silver ammonia solution and stirred for 30 minutes; after the stirring, the resulting solution was filtered to obtain a colorless transparent filtrate; sealed with plastic wrap and pierced with 4-7 small holes, and naturally volatilized at room temperature for 3 days to obtain a light yellow Blocky crystals with a long storage time and a yield of 57% (based on the bztpy ligand).

[0037] Elemental analysis theoretical value of the crystal material of the present invention: C 28 h 18 AgN 2 o 2 : C 64...

Embodiment 2

[0046] The crystal material Ag ( mu -aca)( mu 4 -bztpy) 1 / 2 Grind into powder, weigh 20mg sample and soak in water, carry out powder X-ray diffraction to the recovered sample after 7 days, image 3 It shows that in the environment where the sample exists in aqueous solution, the frame still maintains the original stable state, which provides convenience for use in the living environment.

Embodiment 3

[0048] Weigh 2 mg of powdery crystal material Ag ( mu -aca)( mu 4 -bztpy) 1 / 2 Add to different organic small molecule solvents (1,4-dioxane, acetone, n-butanol, ethyl acetate, ethanol, dichloromethane, N, N-dimethylformamide, xylene, acetonitrile, Dimethyl sulfoxide, methanol, and nitrobenzene), ultrasonication for about 10 minutes, and liquid fluorescence test.

[0049] Samples of the same mass were also added to aqueous solutions of nitrates containing different metal ions (concentration of 0.01 mol L -1 ) medium (magnesium nitrate, potassium nitrate, cadmium nitrate, sodium nitrate, zinc nitrate, cobalt nitrate, copper nitrate, silver nitrate, nickel nitrate and iron nitrate), ultrasound for about 30 minutes, liquid fluorescence test.

[0050] Samples of the same mass were also added to aqueous solutions of potassium salts containing different anions (concentration of 0.01mol L -1 ) (potassium nitrate, potassium sulfate, potassium acetate, potassium chloride, potassium...

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Abstract

The invention belongs to the technical field of optical materials, and in particular relates to a novel Ag coordination polymer crystal material Ag ( mu -aca)( mu 4 -bztpy) 1 / 2 , whose chemical formula is C 28 h 18 AgN 2 o 2 , each smallest asymmetric unit contains a crystallographically independent Ag + , half a bztpy ligand and an aca ‑ Counter anion; the crystal material of the present invention emits strong green light under the irradiation of ultraviolet light, and combined with fluorescence performance, it can be used as a sensor to detect and identify toxic organic small molecule nitrobenzene and polluting ion Fe 3+ 、Cr 2 o 7 2‑ . Its preparation method comprises: the Ag 2 The ammonia solution of O, the ethanol solution of 1,2,4,5-tetrakis(4-pyridyl)benzene, and the ethanol solution of 9-anthracenecarboxylic acid are mixed and stirred evenly, and crystallization can be carried out after the reaction. The preparation method of the invention has the advantages of simple operation, high yield, cost saving and favorable industrial production.

Description

technical field [0001] The invention belongs to the technical field of optical materials, and in particular relates to a novel Ag coordination polymer crystal material Ag ( mu -aca)( mu 4 -bztpy) 1 / 2 And its synthesis method and application. Background technique [0002] With the rapid advancement of science and technology, people are paying more and more attention to fluorescence phenomena, and the application range of fluorescent materials is also becoming wider and wider. Fluorescent materials can be divided into various types, including inorganic fluorescent materials and organic fluorescent materials. Among them, the traditional preparation method of inorganic fluorescent materials is high-temperature solid-phase method, but with the rapid update of new technologies, the improvement of performance indicators of luminescent materials needs to overcome the inherent defects of classical synthesis methods, such as high reaction temperature and large particle size of pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00G01N21/64
CPCC08G83/008G01N21/64
Inventor 刘维陈丛丛吴云当倪春林张静徐奕琳陈克来
Owner SOUTH CHINA AGRI UNIV
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