CN110405224A - A method of using aminothiophenol as one step rapid synthesis copper nano-cluster of ligand - Google Patents
A method of using aminothiophenol as one step rapid synthesis copper nano-cluster of ligand Download PDFInfo
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- CN110405224A CN110405224A CN201910742842.7A CN201910742842A CN110405224A CN 110405224 A CN110405224 A CN 110405224A CN 201910742842 A CN201910742842 A CN 201910742842A CN 110405224 A CN110405224 A CN 110405224A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
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- B22F1/0553—Complex form nanoparticles, e.g. prism, pyramid, octahedron
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
Abstract
The present invention provides a kind of using aminothiophenol as the method for one step rapid synthesis copper nano-cluster of ligand, belongs to the preparation technical field of fluorescent nano material.The present invention is by design aminothiophenol structure rapid synthesis fluorescence copper nano-cluster, further development and the perfect method for preparing fluorescence copper nano-cluster as the smaller ligand of main functional group using amino.The present invention has fully taken into account amino group bring weak interaction force in the synthesis of fluorescence gold nanoclusters, can realize that the fluorescence of regulation fluorescence copper nano-cluster is strong and weak by simple adjustment pH value.Compared with prior art, have the characteristics that step it is simple, it is environmentally protective, be swift in response.
Description
Technical field
The present invention relates to a kind of using aminothiophenol as the method for one step rapid synthesis copper nano-cluster of ligand, belongs to fluorescence and receives
The preparation technical field of rice material.
Background technique
Fluorescence metal nano-cluster, be usually made of several to dozens of atoms and size be less than 2nm, between nanoparticle with
Between monatomic, there is unique physics, chemistry and optical property.The advantageous property of fluorescence metal nano-cluster make its cell at
The fields such as picture, catalysis, sensing have a wide range of applications.In the past more than ten years, many templates such as DNA, polymer, protein and
Sulfydryl small-molecule substance etc. is successfully used to the synthesis of fluorescence nano cluster, wherein special group (such as sulfydryl, carboxyl and ammonia
Base) key effect is played, the photoluminescent property of nano-cluster can be significantly affected.We have found that a kind of sulfydryl of amino-functional dough
Small molecule substance prepares the synthetic method of fluorescence copper nano-cluster as ligand, i.e., prepares fluorescence using 3- aminothiophenol as ligand
Copper nano-cluster.
Luminescence generated by light is one of the critical nature of fluorescence metal nano-cluster.Currently, the fluorescence metal nano-cluster synthesis of synthesis
Ligand species are numerous in the process, but less to fluorescence copper nano-cluster report is synthesized based on benzenethiol structure.Meanwhile it realizing
It focuses mostly in synthesis fluorescence copper nano-cluster comprising a variety of functional group's collective effects, such as glutathione, cysteine, 3- sulfydryl third
Acid, dihydrolipoic acid etc. are rich in a variety of functional groups, lack and the sulfydryl small molecule class ligand of amino-functional dough is probed into.Together
Shi Yinwei ligand reproducibility is insufficient, generally requires that reducing agent (hydroxylamine hydrochloride, hydrazine hydrate etc.) is added or increases reaction duration, this nothing
Doubting, which makes to prepare fluorescence nano cluster, obtains method complexity, is not easy to promote the use of a large area.
Fluorescence copper nano-cluster is prepared by ligand of 3- aminothiophenol, since amino and sulfydryl are acted on copper ion simultaneously,
It is easy to operate using " one-step method ", it does not need that other reducing agents are added；It is swift in response, reacts about 10s, that is, visible suspension, produce
Raw Chinese red fluorescence；It is environmentally protective using raw material.And it is adjusted by pH and realizes multiple action power alternately, it is further complete
It has been apt to eventually arrive at the theoretical basis of self assembly state by monodisperse state to superstructure state.
Summary of the invention
The present invention constructs one kind using aminothiophenol as one step rapid synthesis copper nanometer of ligand by easy method
The method of cluster.
Technical solution of the present invention:
A method of using aminothiophenol as one step rapid synthesis copper nano-cluster of ligand, steps are as follows:
(1) at room temperature, prepare 3- aminothiophenol solution, solvent for use be water, methanol, ethyl alcohol, normal propyl alcohol, isopropanol,
The mixing of one or more of N,N-dimethylformamide, dimethyl sulfoxide；
(2) 3- aminothiophenol solution and copper ion solution are mixed, keeps 3- aminothiophenol and copper ion molar ratio
For 1:0.01~1:0.2；
(3) pH=3~7 are adjusted after mixing to solution, 25~45 DEG C of reaction temperature.
In step (1), the solvent is water.
In step (2), the 3- aminothiophenol and copper ion molar ratio are 1:0.1.
In step (3), the pH is 3~7.
Beneficial effects of the present invention: the present invention using 3- aminothiophenol as ligand, is having found one kind conveniently
The method for preparing fluorescence copper nano-cluster.Compared with prior art, have the characteristics that step it is simple, it is environmentally protective, be swift in response.
Detailed description of the invention
Fig. 1 is the fluorescence copper nanocluster fluorescence excitation synthesized by ligand of 3- aminothiophenol and transmitting spectrogram.
Fig. 2 is the fluorescence copper nano-cluster x-ray photoelectron spectroscopy figure synthesized by ligand of 3- aminothiophenol.
Fig. 3 is the fluorescence copper nano-cluster transmission electron microscope picture synthesized by ligand of 3- aminothiophenol.
Fig. 4 is the fluorescence copper nano-cluster ultraviolet-visible absorption spectra figure synthesized by ligand of 3- aminothiophenol.
Fig. 5 is the fluorogram for synthesizing copper nano-cluster with various concentration copper ion by ligand of 3- aminothiophenol.
Fig. 6 is the fluorogram of the copper nano-cluster that synthesizes by ligand of 3- aminothiophenol at various ph values.
Fig. 7 is the fluorogram of the copper nano-cluster that synthesizes by ligand of 3- aminothiophenol under different solvents.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
Examples 1 to 5
A kind of aminothiophenol is the method for ligand synthesis fluorescence copper nano-cluster, and described method includes following steps:
(1) 4.55mL is taken, 0.45mL, various concentration is added in 10mL beaker in the 3- aminothiophenol aqueous solution of 10mM
Copper ion solution, sufficiently stir evenly, generate suspension solution；
(2) by step (1) resulting mixed solution, pH value of solution=4 are adjusted.Exocarpium Citri Rubrum is presented under the ultraviolet light irradiation of 365nm
Color fluorescence shows that 3- aminothiophenol is that the fluorescence copper nano-cluster of ligand successfully synthesizes.
The copper nano-cluster of 3- aminothiophenol and copper ion the different mol ratio preparation of the Examples 1 to 5 is shown in Table 1.
The sulfydryl small molecule of aromatic series amido functional group, i.e., using 3- aminothiophenol as the fluorescence copper nano-cluster of ligand
Maximum excitation and launch wavelength are respectively 360nm and 590nm (Fig. 1).Stokes shift reaches 230nm, shows that fluorescence copper is received
Rice cluster has good fluorescence characteristic.In 932.2eV (Cu 2p in x-ray photoelectron spectroscopy figure (Fig. 2)3/2) and 952.2eV (Cu
2p1/2) there are two characteristic peaks, show that non-appearance, shows divalent near 942eV containing zerovalent copper and monovalence copper in this substance
Copper ion has been not present, that is, demonstrates and successfully synthesize copper nano-cluster as ligand using 3- aminothiophenol.Transmission electron microscope picture (Fig. 3) is aobvious
Show that the Chinese red fluorescence copper nanocluster size of synthesis is uniform, favorable dispersibility, average grain diameter 1.16nm, and be self-assembled into as ball
Shape pattern.Ultraviolet-visible absorption spectroscopy (Fig. 4) indicates that there are apparent characteristic absorption peaks near 230nm and 300nm.
The concentration of 1 Examples 1 to 5 copper ion solution of table
Embodiment 6~9
A method of fluorescence copper nano-cluster being synthesized by ligand of aminothiophenol, described method includes following steps:
(1) 4.55mL is taken, 0.45mL, the copper of 10mM is added in 10mL beaker in the 3- aminothiophenol aqueous solution of 10mM
Solion sufficiently stirs evenly, and generates suspension solution；
(2) by step (1) resulting mixed solution, solution is adjusted under different pH value.
Copper nano-cluster under the different pH value of the embodiment 6~9 is shown in Table 2.
Based on the architectural characteristic of 3- aminothiophenol, we can adjust multiple action power alternately by changing pH value
And different TEM patterns are presented.Can substantially three phases be divided into: as pH < 4, solution is in clear shape, nothing under ultraviolet lamp
Fluorescence shows presentation monodisperse status by TEM figure.This is because protonated amino degree gradually increases, electrostatic repulsion power
Greater than Hyarogen-bonding, single nano-cluster is difficult to limit the vibration and rotation of its molecule, nonradiative transition by way of aggregation
It further enhances, eventually leads to fluorescent quenching.As 4≤pH < 6, nano-cluster starts to be assembled into superstructure state, and solution presents outstanding
Turbid state is showed by TEM figure and is assembled into spherical morphology, and further along with partial cross-linked.This is because amino group
Bring Hyarogen-bonding is leading to be formed, and single nano-cluster is assembled, and photoluminescent property further enhances, and has rule
The then superstructure of pattern.Work as pH=6, nano-cluster further becomes self assembly state, and fluorescence intensity reaches maximum, is schemed by TEM aobvious
It shows and is assembled into Nanostructure Network, and apparent deposited phenomenon occurs in solution.This is because benzene ring structure bring π-π
Active force and hydrophobic forces.Nano-cluster is precipitated from solution from the point of view of macroscopic aspect, promotes single nanometer from the point of view of microcosmic point
Cluster further towards, limitation, crosslinking.It is interesting that as pH=7, fluorescence intensity decline, shown by TEM figure be self-assembled into for
The flaky nanometer structure of " loose ", due to the decrease of restriction effect, solution becomes suspended state again.
The pH value of 2 embodiment 6~9 of table
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | |
| PH value | 4 | 5 | 6 | 7 |
Embodiment 10~15
A method of fluorescence copper nano-cluster being synthesized by ligand of aminothiophenol, described method includes following steps:
(1) 4.55mL is taken, 0.45mL is added in different solvents in the 3- aminothiophenol of 10mM, and the copper ion of 10mM is molten
Liquid sufficiently stirs evenly, and generates suspension solution；
(2) by step (1) resulting mixed solution, pH value of solution=6 are adjusted.
Copper nano-cluster under the different solvents of the embodiment 10~15 is shown in Table 3.
The nano-cluster with state of aggregation is formed since Hyarogen-bonding is leading and generates excellent fluorescence property.Thus we
Replacement solvent is tested, and (methanol, ethyl alcohol, propyl alcohol, isopropanol), which remains unchanged, under most alcohols materials shows that its is excellent glimmering
Optical property, wherein the ability for providing proton hydrogen is the key that influence its fluorescence property；Under aprotic solvents, such as dimethyl Asia
Proton hydrogen is not present in sulfone (DMSO), it is difficult to form state of aggregation nano-cluster by hydrogen bond action, clear, fluorescence is presented in solution
Intensity sharply declines.
3 embodiment 10~15 of table is under different solvents
Claims (6)
1. a kind of using aminothiophenol as the method for one step rapid synthesis copper nano-cluster of ligand, which is characterized in that steps are as follows:
(1) at room temperature, 3- aminothiophenol solution is prepared；
(2) 3- aminothiophenol solution and copper ion solution are mixed, keeping 3- aminothiophenol and copper ion molar ratio is 1:
0.01~1:0.2；
(3) pH=3~7 are adjusted after mixing to solution, 25~45 DEG C of reaction temperature, obtain copper nano-cluster.
2. the method according to claim 1, wherein in step (1), solvent for use is water, methanol, ethyl alcohol, just
The mixing of one or more of propyl alcohol, isopropanol, N,N-dimethylformamide, dimethyl sulfoxide.
3. the method according to claim 1, wherein the solvent is water in step (1).
4. method according to claim 1 to 3, which is characterized in that in step (2), the 3- aminothiophenol
Concentration is 10mM, and the concentration of the copper ion solution is 1~20mM, and the 3- aminothiophenol is with copper ion molar ratio
1:0.1。
5. method according to claim 1 to 3, which is characterized in that in step (3), the pH is 3~7.
6. according to the method described in claim 4, it is characterized in that, the pH is 3~7 in step (3).
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| CN111715890A (en) * | 2020-06-29 | 2020-09-29 | 太原师范学院 | Preparation method, product and application of polyvinylpyrrolidone-copper nanocluster |
| CN112247157A (en) * | 2020-09-27 | 2021-01-22 | 西安工程大学 | 2-ethylthiophenol protected silver-palladium alloy nanocluster and preparation method thereof |
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| CN112247157A (en) * | 2020-09-27 | 2021-01-22 | 西安工程大学 | 2-ethylthiophenol protected silver-palladium alloy nanocluster and preparation method thereof |
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