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An organic-inorganic nanocomposite two-photon fluorescent material and its preparation method and application

A two-photon fluorescence and inorganic nanotechnology, applied in the field of composite two-photon fluorescent materials, to achieve good rigid plane, low cytotoxicity, and good stability

Active Publication Date: 2019-06-28
ANHUI UNIVERSITY
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Problems solved by technology

[0020] Key words—two-photon fluorescent terpyridine derivatives-ZnS nanocomposite copper ion probe No relevant literature

Method used

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  • An organic-inorganic nanocomposite two-photon fluorescent material and its preparation method and application
  • An organic-inorganic nanocomposite two-photon fluorescent material and its preparation method and application
  • An organic-inorganic nanocomposite two-photon fluorescent material and its preparation method and application

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Embodiment Construction

[0048] 1. Preparation of L-ZnS nanocomposites

[0049] Weigh 0.1810g of Zn(SCN) 2 Dissolve in 20mL ethanol, stir at room temperature until a transparent solution is formed, dissolve 0.0476g of Ligand L in dichloromethane and add dropwise to the above transparent solution, stir at room temperature for 30min, the solution gradually changes from yellow transparent solution to Yellow turbid solution becomes red turbid solution again, then adds the ethanol solution that is dissolved with 0.0675g thioacetamide (TAA) in reaction solution, reflux reaction 12h, reaction solution becomes orange-red turbid solution by red turbid solution gradually, Cool, centrifuge, wash with ethanol and water three times, and dry overnight to obtain L-ZnS nanocomposites.

[0050] 2. Recognition of copper ions by the target product L-ZnS

[0051] Selective behavior is one of the most important characteristics of fluorescent probes. Such as Figure 4 , 5 As shown, the fluorescence intensity is strong...

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Abstract

The invention discloses an organic-inorganic nanocomposite two-photon fluorescent material as well as a preparation method and an application thereof. The organic-inorganic nanocomposite two-photon fluorescent material is formed by compositing an organic component and an inorganic component under interfacial coordination of Zn(NCS)2, wherein the organic component is ligand L, namely, 4-([2,2':6',2''-terpyridine]-4'-yl)-N,N-diphenylamine, and the inorganic component is ZnS. The ligand L and ZnS nanoparticles are composited under the interfacial coordination of Zn(NCS)2. The L-ZnS nanocompositematerial has the characteristics of large two-photon absorption cross section (capable of reaching 2992.08 GM), low excitation energy, high penetrability, small optical damage, low toxicity and the like and realizes long-wavelength emission, so that damage to cells is avoided, and the material can be used for detecting copper ions in living cells and has obvious application value.

Description

technical field [0001] The invention relates to a composite two-photon fluorescent material, in particular to an organic-inorganic nano composite two-photon fluorescent material and its preparation method and application. Background technique [0002] Organic-inorganic nanocomposites widely exist in nature, such as animal bones, teeth, egg shells, pearls, etc. are typical natural biocomposites. Organic-inorganic nanocomposites combine the excellent properties of organic, inorganic and nanomaterials, and can form important multifunctional new materials with good mechanical, optical, electrical and magnetic functional properties. They are used in many fields including in the process of life activities. have a broad vision of application. Organic-inorganic nanocomposites refer to composite materials whose dispersed phase size is less than 100nm in one dimension. The nanophase and other phases are compounded at the nanoscale through chemical (covalent bonds, coordination bonds)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C09K11/56B82Y30/00B82Y20/00B82Y40/00G01N21/64
Inventor 孔林杨利
Owner ANHUI UNIVERSITY
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