Organic phosphine copper nanocluster crystals and preparation method thereof

An organophosphine and cluster technology, applied in the field of organophosphine copper nano-cluster crystals and its synthesis, can solve the problems of difficult to accurately characterize the molecular structure, complex synthesis methods, poor crystallinity, etc., and achieve short reaction time and low preparation cost Low, high yield effect

Active Publication Date: 2018-02-02
FUZHOU UNIV
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Problems solved by technology

However, most of the copper nanocluster protection ligands in the published research are sulfhydryl ligands, which have relatively poor stability, complex synthesis methods, low yields, and poor crystallinity, making it difficult to accurately characterize their molecular structures. Moreover, it mainly emits green light, which limits its application in sensing platforms and light-emitting devices.

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  • Organic phosphine copper nanocluster crystals and preparation method thereof

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Embodiment 1

[0018] Specific steps are as follows:

[0019] (1). [Cu 2 (dppy) 3 (MeCN)] (ClO 4 ) 2 preparation of

[0020] Add 20 mL of MeCN, copper powder (200 mg, 3.1 mmol), dppy (1460 mg, 5.5 mmol) and [Cu(MeCN) 4 ]ClO 4 (1170 mg, 3.6 mmol), stirred for 1.5 h and filtered with suction. The filtrate was transferred to a dry 100 mL round bottom flask and concentrated to approximately 5 mL by rotary evaporation in a water bath at 40 °C. Add diethyl ether to the above concentrated solution until white turbidity appears, let the crystals crystallize fully, then filter with suction, wash the solid with a small amount of diethyl ether, continue to drain it and dry it at room temperature to obtain a white solid product [Cu 2 (dppy) 3 (MeCN)] (ClO 4 ) 2 (1770 mg, 1.5 mmol), with an average yield of 85%.

[0021] (2). [Cu 7 (dppy) 6 ](ClO 4 ) 2 and [Cu 4 (dppy) 4 Cl 2 ](ClO 4 ) Preparation of nanocluster crystals

[0022] In a nitrogen atmosphere, 0.2 mmol [Cu 2 (dppy) 3 (...

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Abstract

The invention belongs to the technical field of metal nanoclusters, in particular to an organic phosphine copper nanocluster crystals and a preparation method thereof. With an organic phosphine coppercompound [Cu2(dppy)3(MeCN)](ClO4)2 as a precursor, NaBH4 as a reducing agent and CH2Cl2 and methanol as reaction solvents, after a stirring reaction is performed for 2h at room temperature, crystalswith two different structures, namely red [Cu7(dppy)6](ClO4)2 and yellow [Cu4(dppy)4Cl2](ClO4), can be obtained through recrystallization in different solvents respectively. A technology is simple, areaction condition is mild, and the reaction time is short; the two nanocrystals have unique structures and excellent light-emitting properties, have the particle sizes being smaller than 5 nanometers, and have potential application in light-emitting sensing and light-emitting devices; the preparation cost is low, no harmful waste is produced, and a requirement on environment-friendly production is met.

Description

technical field [0001] The invention belongs to the technical field of metal nano-cluster compounds, and in particular relates to an organophosphine-copper nano-cluster crystal and a synthesis method thereof. Background technique [0002] Metal nanoclusters are a new type of nanomaterials, generally composed of a few to about a hundred metal atoms, with ultra-small particle size, biocompatibility, low toxicity and unique physical and chemical properties. Ideal nanomaterials for sensing platforms have broad development prospects in disease diagnosis and detection, cell imaging, biotracing, environmental detection, biosensing, etc., and have attracted people's attention in recent years. Metal nanoclusters are different from nanoparticles. Nanoclusters can usually form a long-range ordered single crystal structure through various intramolecular or intermolecular forces, which provides the possibility for accurate characterization of their molecular structures. It is also condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08C09K11/06B82Y20/00B82Y40/00H01L51/54
CPCC09K11/06B82Y20/00B82Y40/00C07F1/005C07B2200/13C09K2211/188H10K85/371
Inventor 魏巧华陈楠楠黄群林志香
Owner FUZHOU UNIV
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