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Copper nano cluster with high stability and near-infrared phosphorescence and preparation method thereof

A high-stability, copper-nano technology, applied in organic chemical methods, chemical instruments and methods, luminescent materials, etc., can solve problems that hinder the application of copper nano-clusters, achieve good stability and photoluminescent performance, novel structure, The effect of the simple synthesis method

Active Publication Date: 2020-08-18
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon greatly hinders the application of copper nanoclusters in photosensitive materials, cell imaging, and biomarkers.

Method used

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  • Copper nano cluster with high stability and near-infrared phosphorescence and preparation method thereof
  • Copper nano cluster with high stability and near-infrared phosphorescence and preparation method thereof
  • Copper nano cluster with high stability and near-infrared phosphorescence and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Synthesis of copper nanoclusters

[0022] The whole preparation process is carried out at room temperature under uniform stirring at 1200 rpm. First, add 40 milligrams of cuprous chloride, 100 milligrams of tetraoctyl ammonium bromide, 15 milliliters of chloroform and 10 milliliters of methanol in a 100 milliliter pear-shaped flask, after reacting for 15 minutes, add 100 milligrams of triphenylphosphine; After 30 minutes, 70 microliters of 4-tert-butylthiophenol was added to the reaction system; after the reaction was continued for 30 minutes, 5 milliliters of deionized aqueous solution containing 50 milligrams of sodium borohydride was quickly added to the pear-shaped flask, and the solution The color turned black immediately; the reaction continued to stir for 24 hours, after which the stirring magnet and the aqueous solution in the reaction system were removed, and 5 milliliters of methanol solution containing 100 milligrams of sodium hexafluoroantimonate ...

Embodiment 2

[0023] Example 2: Characterization of crystal structure

[0024] Get the copper nanocluster that embodiment 1 makes and do further characterization, its process is as follows:

[0025] (1) Determination of crystal structure

[0026] Under the optical microscope, select the needle-like crystals, choose a crystal with good quality and large size under the protection of nitrogen atmosphere (170K), in the equipment equipped with Ga-Kα The Bruker D8 Venture diffractometer of the light source collects the data, and then uses the APEX 3 software to integrate and restore the data. The structure was then analyzed and refined using the programs ShelXT and ShelXL in Olex 2 software. All Au, Ag and S atoms were discovered directly, and the remaining non-hydrogen atoms were generated by differential Fourier synthesis. All non-hydrogen atoms were anisotropically refined. All hydrogen atoms are positioned by geometrical calculations and are isotropically refined. Electron densities aris...

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Abstract

The invention discloses a copper nano cluster with high stability and near-infrared phosphorescence and a preparation method thereof, and belongs to the crossing field of coordination chemistry and nano materials. Common p-tert-butyl thiophenol and triphenyl phosphine are used as protective ligands of the copper nano cluster, the copper nano cluster with near-infrared luminescence is synthesized through a simple one-pot method at the room temperature in an air atmosphere, and the yield is high. The molecular formula of the copper nano cluster is [Cu11(SC10H13)9(PC18H15)6](SbF6)2, the copper nano cluster belongs to a monoclinic system, and the space group is P 21 / n. At the room temperature, a solution and a solid of the copper nano cluster both have strong red phosphorescence, and the absolute quantum yield of the solid is 22%. At the room temperature and in an air atmosphere, a solution of the copper nano cluster has strong stability.

Description

technical field [0001] The invention belongs to the subject of nanomaterials, and relates to a copper nanocluster with high stability and near-infrared phosphorescence and a preparation method thereof. Background technique [0002] for having d 10 Photoluminescence is one of the most interesting properties for electronic metal nanoclusters. Among them, Cu(I) clusters have been widely studied due to their abundant raw material reserves, cheap price and easy availability, especially their unique optical properties. At present, Cu(I) clusters have been applied to high-efficiency luminescent inks, organic light-emitting materials, etc. aspect. [0003] Some Cu-X (X represents a halogen atom, such as Cu 4 I 4 、Cu 3 I 6 etc.) clusters usually exhibit strong phosphorescent and thermochromic behaviors in the solid state. In order to pursue more copper nanoclusters with novel structures and optical properties, scientists use some organic ligands to synthesize copper nanocluste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/50C09K11/06
CPCC07F9/5045C09K11/06C07B2200/13C09K2211/188
Inventor 宋永波李浩朱满洲周传君
Owner ANHUI UNIVERSITY
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