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Dual functionalized nanometer material, preparation method and uses thereof

A nanomaterial, bifunctional technology, applied in the field of preparation and application of bifunctional noble metal nanomaterials, can solve the problem that the luminous intensity cannot be improved to meet the requirements, etc., and achieve a good application prospect, good reproducibility and high sensitivity. Effect

Active Publication Date: 2015-02-25
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was found that adding this catalytic substance to the existing luminescent functionalized nanomaterials still failed to increase the luminous intensity to a level that meets the requirements.

Method used

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  • Dual functionalized nanometer material, preparation method and uses thereof
  • Dual functionalized nanometer material, preparation method and uses thereof
  • Dual functionalized nanometer material, preparation method and uses thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0080] B. Preparation method of bifunctional noble metal nanomaterials

[0081] The present invention also provides a method for preparing the bifunctional noble metal nanomaterial of the present invention easily and rapidly, which comprises the following steps:

[0082] 1. Provide coordination metal ion chelates containing mercapto or amino groups

[0083] The mercapto or amino-containing coordination metal ion chelate is as defined above, which comprises a coordination metal ion and a chelating agent, wherein the chelating agent can be obtained by performing a chelating agent that does not contain a mercapto or amino group known in the art. Thilated or aminated in the system. The thiolation or amination of such chelating agents is known, see for example: Christophe Alric, Jacqueline Taleb, Géraldine Le Duc, Céline Mandon, Claire Billotey, Alice Le Meur-Herland, Thierry Brochard, Francis Vocanson, Marc Janier, Pascal Perriat, Stéphane Roux, and Olivier Tillement. J. Am. Che...

Embodiment

[0117] testing method:

[0118] (1) Transmission electron microscope;

[0119] Test method: transmission electron microscope (TEM, JEOL Ltd, JEOL-2010, Japan). The prepared sample was centrifuged, and the supernatant was removed after 15 min at 12500*g. After the obtained precipitate was dispersed in absolute ethanol solution, transmission electron microscope analysis was performed.

[0120] (2) Thermogravimetric analysis and differential thermal analysis;

[0121] Test method: (TGA / DTG, Q5000V3.15) Centrifuge the prepared sample, remove the supernatant after 12500*g for 15min. The obtained precipitate was dried under vacuum condition, and thermogravimetric analysis and differential thermal analysis were carried out.

[0122] (3) Ultraviolet visible spectrum;

[0123] Test method: (Agilent8453 ultraviolet-visible spectrometer) centrifuge the prepared sample at 12500*g for 15 minutes and remove the supernatant. The resulting precipitate was dispersed in a pH=12 NaOH sol...

Synthetic example 1

[0128] Synthesis Example 1: Preparation of thiolated diethylenetriaminepentaacetic acid (chelating agent 1)

[0129] Dissolve 1g of diethylenetriaminepentaacetic dianhydride in 20mL of N,N-dimethylformamide, and heat to 70°C to obtain solution A. Dissolve 0.55g of 2-aminoethanethiol in 15mL of N,N-dimethylformamide, add 0.87mL of triethylamine, and heat to 70°C to obtain solution B. Add solution B to solution A, heat and stir at 70°C overnight. During the reaction process, the solution gradually changed from colorless to light yellow, indicating that diethylenetriaminepentaacetic dianhydride and 2-aminoethanethiol had undergone amidation reaction to generate a chelating agent with mercapto groups. After the solution was cooled to room temperature, it was placed in an ice bath, and the white precipitate was filtered off. The obtained filtrate was concentrated by rotary evaporation, and a white precipitate was obtained after adding chloroform. The obtained white precipitate...

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Abstract

The present invention relates to a dual functionalized nanometer material, a preparation method and uses thereof, particularly to a dual functionalized noble metal nanometer material, which comprises noble metal nanoparticles, a luminescence segment derived from a luminol chemiluminescence reagent represented by a general formula (I) and a luminescence enhanced segment derived from a coordination metal ion chelate containing mercapto or amino, the luminescence segment derived from the luminol chemiluminescence reagent represented by the general formula (I) and the luminescence enhanced segment derived from the coordination metal ion chelate containing mercapto or amino are linked on the surface of the noble metal nanoparticles, A represents C6-C14 aryl and R1 and R2 can independently represent hydrogen, and linear or branched (C1-C30) alkyl with the amino substituted terminal or the unsubstituted linear or branched (C1-C30) alkyl in the formula, and the premise condition is that NR1R2 has at least one NH2 terminal. The dual functionalized noble metal nanometer material has the excellent luminescence characteristic. Compared with the dual functionalized noble metal nanometer material in the prior art, the luminescence characteristic of the dual functionalized noble metal nanometer material is substantially improved, and the unexpected technical effect is achieved. The general formula (I) is defined in the instruction.

Description

technical field [0001] The invention relates to a bifunctional noble metal nano material containing a chemiluminescence segment and a luminescence enhancement segment. The invention also relates to the preparation and application of the bifunctional noble metal nanometer material. Background technique [0002] Noble metal nanomaterials have unique optical properties, catalytic activity and biocompatibility, etc. These characteristics make noble metal nanomaterials widely used in the field of chemiluminescence analysis. The surface modification of the existing noble metal nanomaterials to have luminescent molecules on the surface, that is, the preparation of luminescent functionalized noble metal nanomaterials has attracted widespread attention. [0003] For example, it is known in the prior art to directly use luminol to reduce chloroauric acid, and obtain gold nanomaterials functionalized with luminol in one step (Cui, H.; Wang, W.; Duan, C.F.; Dong, Y.P.; Guo , J.Z.Chem....

Claims

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Application Information

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IPC IPC(8): C09K11/06G01N21/76G01N33/553
Inventor 崔华刘孟晓张宏丽舒江南
Owner UNIV OF SCI & TECH OF CHINA
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