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Preparation method of silver-sulfur nano-cluster aggregate with circular polarization luminescence

A silver-sulfur nano-aggregate technology, applied in organic chemistry methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of weak luminescence, red shift, etc. The effect of a large symmetry factor

Pending Publication Date: 2020-07-17
无锡市疾病预防控制中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the luminescence of these metal nanoclusters is weak and shows size-dependent fluorescence properties, that is, the luminescence intensity is gradually red-shifted with the increase of size (Zheng J, Zhang C, Dickson R M. Highly Fluorescent, Water-Soluble , Size-Tunable GoldQuantum Dots, Phys. Rev. Lett. 2004, 93 : 077402)

Method used

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  • Preparation method of silver-sulfur nano-cluster aggregate with circular polarization luminescence
  • Preparation method of silver-sulfur nano-cluster aggregate with circular polarization luminescence
  • Preparation method of silver-sulfur nano-cluster aggregate with circular polarization luminescence

Examples

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Embodiment 1

[0041] Example 1 Preparation of D-penicillamine stabilized silver-sulfur nanocluster aggregate D-Ag

[0042] D-penicillamine (25 mg) was added to 5 mL of double-distilled water, stirred to dissolve, and then silver nitrate aqueous solution (29 mg, dissolved in 3 mL of double-distilled water) was added, and further stirred at room temperature for 3 to 4 hours to obtain Aggregate induced luminescence and circularly polarized luminescence silver-sulfur nanocluster aggregates.

Embodiment 2

[0043] Example 2 Preparation of D-penicillamine stabilized silver-sulfur nanocluster aggregate D-Ag

[0044] D-penicillamine (50 mg) was added to 5 mL of double-distilled water, stirred to dissolve, and then silver nitrate aqueous solution (57 mg, dissolved in 3 mL of double-distilled water) was added, and further stirred at room temperature for 3 to 4 hours, to obtain Aggregate induced luminescence and circularly polarized luminescence silver-sulfur nanocluster aggregates.

Embodiment 3

[0045] Example 3 Preparation of D-penicillamine stabilized silver-sulfur nanocluster aggregate D-Ag

[0046] D-penicillamine (75 mg) was added to 5 mL of double-distilled water, stirred to dissolve, and then silver nitrate aqueous solution (86 mg, dissolved in 3 mL of double-distilled water) was added, and further stirred at room temperature for 3~4 hours to obtain Aggregate induced luminescence and circularly polarized luminescence silver-sulfur nanocluster aggregates.

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Abstract

The invention discloses a preparation method of a silver-sulfur nano-cluster aggregate with circular polarization luminescence, and belongs to the technical field of nano-material chiral luminescence.According to the invention, the chiral silver-sulfur nano-cluster aggregate with strong luminescence is prepared in water by a one-step method at room temperature, and shows a circular polarization luminescence property, and the luminescence asymmetry factor is up to 1.2*10<-2>. The silver-sulfur nano-cluster aggregate has the greatest characteristics that the silver-sulfur nano-cluster aggregateis prepared in water through a one-step method, has a circular polarization luminescence property, is low in pollution, can be synthesized in quantity, and has a very good application prospect in theaspects of three-dimensional optical display, information storage, biological coding and optical devices.

Description

Technical field [0001] The invention relates to a preparation method of a silver-sulfur nanocluster aggregate with circular polarization luminescence, belonging to the technical field of chiral luminescence of nano materials. Background technique [0002] Metal nanoclusters are a class of nanomaterials composed of several to dozens of atoms with a definite structure, and the size is similar to the Fermi wavelength of electrons, and exhibits electronic structure and optical properties similar to molecules (Wilcoxon JP, Abrams B L . Synthesis, structure and properties of metal nanoclusters, Chem. Soc. Rev. 2006, 35 : 1162–1194). However, the luminescence of these metal nanoclusters is weaker and shows size-dependent fluorescence properties, that is, as the size increases, the luminescence intensity gradually red shifts (Zheng J, Zhang C, Dickson R M. Highly Fluorescent, Water-Soluble , Size-Tunable GoldQuantum Dots, Phys. Rev. Lett. 2004, 93 : 077402). Aggregation-induced lumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/58C07C323/58C09K11/06B82Y20/00B82Y30/00B82Y40/00
CPCC09K11/02C09K11/582C07C323/58C09K11/06B82Y20/00B82Y30/00B82Y40/00C09K2211/188C07B2200/07
Inventor 孔令灿刘文卫韩毅周小新丁新良
Owner 无锡市疾病预防控制中心
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