Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Blue fluorescent silver nanocluster as well as preparation method and application thereof

A technology of silver nanoclusters and blue fluorescence, applied in nanotechnology, nanotechnology, nano-optics, etc., can solve the problems of low sensitivity, complicated operation, expensive instruments, etc., and achieve high sensitivity, simple operation, and short reaction time Effect

Active Publication Date: 2021-01-05
JIANGNAN UNIV
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these methods are time-consuming, costly, expensive instruments, complicated operation, low sensitivity and low selectivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Blue fluorescent silver nanocluster as well as preparation method and application thereof
  • Blue fluorescent silver nanocluster as well as preparation method and application thereof
  • Blue fluorescent silver nanocluster as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Mix 100mL 0.1mol / L histidine aqueous solution and 1mL 0.25mol / L silver nitrate solution at room temperature (nSilver nitrate :nHistidine =1:40), after magnetic stirring for 10 minutes, react in a microwave oven with a power of 700W for 4 minutes, and the reaction mixture was dialyzed with a dialysis membrane with a molecular mass of 500da for 24 hours to obtain fluorescent silver nanoclusters.

[0041]The fluorescence emission peak of this silver nanocluster is about 450nm. When observed under a black background under ultraviolet light, it shows blue fluorescence with a fluorescence intensity of 4.27×104, The quantum yield is 1.3%. The luminescence intensity stability at 450nm was tested within 60 minutes, and the fluorescence intensity value remained basically unchanged after 60 minutes, indicating that the silver nanoclusters have good photobleaching resistance.

Embodiment 2

[0043]Mix 100mL 0.1mol / L histidine aqueous solution and 1mL 0.25mol / L silver nitrate solution at room temperature (nSilver nitrate :nHistidine =1:40), after magnetic stirring for 10 minutes, react in a microwave oven with 700W power for 8 minutes, and the reaction mixture was dialyzed with a dialysis membrane with a molecular mass of 500da for 24 hours to obtain fluorescent silver nanoclusters.

[0044]The fluorescence emission peak of this silver nanocluster is around 450nm, and when observed under a black background under ultraviolet light, it shows blue fluorescence with a fluorescence intensity of 6.15×104, The quantum yield is 1.8%. The luminescence intensity stability at 450nm was tested within 60 minutes, and the fluorescence intensity value remained basically unchanged after 60 minutes, indicating that the silver nanoclusters have good photobleaching resistance.

Embodiment 3

[0046]Mix 100mL 0.125mol / L histidine aqueous solution and 1mL 0.25mol / L silver nitrate solution at room temperature (nSilver nitrate :nHistidine =1:50), after magnetic stirring for 10 minutes, react in a microwave oven with a power of 700W for 4 minutes, and the reaction mixture was dialyzed with a dialysis membrane with a molecular mass of 500da for 24 hours to obtain fluorescent silver nanoclusters.

[0047]The fluorescence emission peak of this silver nanocluster is around 440nm. When observed under a black background under ultraviolet light, it shows blue fluorescence with a fluorescence intensity of 7.94×104, The quantum yield is 2.4%. The luminescence intensity stability at 440nm was tested within 60 minutes, and the fluorescence intensity value remained basically unchanged after 60 minutes, indicating that the silver nanoclusters have good photobleaching resistance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a blue fluorescent silver nanocluster as well as a preparation method and application thereof, and belongs to the technical field of fluorescent nano materials. The fluorescentsilver nanocluster solution is prepared by taking histidine as a reducing agent and a protective agent and a silver nitrate solution as a matrix through a microwave synthesis method. The preparationmethod is simple in system operation, short in reaction time, environment-friendly and good in repeatability, and does not need to use a common reducing agent or other chemical reagents. The silver nanocluster is good in stability, good in water solubility and low in toxicity, has high-sensitivity response to copper ions and iron ions under different pH values, can be applied to high-sensitivity and high-selectivity detection of the copper ions or the iron ions, is simple and rapid in detection process and high in detection result accuracy, and can be used for constructing a sensing system fordetecting the copper ions and the iron ions.

Description

Technical field[0001]The invention belongs to the technical field of fluorescent nanomaterials, and specifically relates to a blue fluorescent silver nanocluster and a preparation method and application thereof, in particular to the application in the detection of copper and iron ions.Background technique[0002]Heavy metals include gold, silver, copper, iron, mercury, lead, cadmium, etc., among which copper and iron are essential micronutrients for human health. Copper is essential for blood, central nervous system and immune system, hair, skin and bone tissues, brain and liver. The development and function of internal organs such as heart and heart have an important influence. Iron is an important part of hemoglobin and plays a role in transporting oxygen in the blood. However, excessive accumulation of copper and iron in the human body can also lead to heavy metal poisoning. Excessive copper ions can have a toxic effect on brain neurons, leading to serious diseases such as Alzheime...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09K11/58B82Y20/00B82Y40/00G01N21/64B22F9/24B22F1/00
CPCC09K11/58B82Y20/00B82Y40/00G01N21/6402G01N21/643B22F9/24B22F1/054
Inventor 陈国庆商云鹏高辉朱纯吴亚敏马超群李磊辜姣朱焯炜朱拓
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com