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

Multicolor-encoded colloidal particles coated with metal nanoparticles mixture having colors in the visible region and method for preparing the same

A metal nanoparticle, nanoparticle technology, applied in metal processing equipment, nanotechnology for materials and surface science, colloid chemistry, etc., can solve problems such as difficulty in detecting samples

Inactive Publication Date: 2008-06-18
KOREA RES INST OF BIOSCI & BIOTECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this method uses optical tweezers to detect the sample, it is not easy to detect the sample

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
  • Multicolor-encoded colloidal particles coated with metal nanoparticles mixture having colors in the visible region and method for preparing the same
  • Multicolor-encoded colloidal particles coated with metal nanoparticles mixture having colors in the visible region and method for preparing the same
  • Multicolor-encoded colloidal particles coated with metal nanoparticles mixture having colors in the visible region and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: Preparation of Nanoparticle Mixtures Displaying Multiple Colors

[0062] Preparation of metal nanoparticles showing three primary colors

[0063] To prepare metal nanoparticles showing red, yellow, and blue, ie, the three primary colors, spherical gold nanoparticles and silver nanoparticles are first prepared.

[0064] To prepare spherical gold nanoparticles showing red color, 500ml of HAuCl 4 (1 mM) was added to a round-bottomed flask and heated under reflux at 100°C. 50 ml of sodium citrate (38.8 mM), as reducing agent, was added to the final solution. After confirming that the color of the reaction solution changed from yellow to dark red, the reaction liquid was further heated for 15 minutes, then cooled to room temperature, followed by filtration with a 0.2 μm microfilter.

[0065] To prepare silver nanoparticles showing yellow color, AgNO 3 (0.04 g), PVP (polyvinylpyrrolidone) (1 g) and 7.5 ml of EG (ethylene glycol) were mixed and stirred vigor...

Embodiment 2

[0072] Example 2: Preparation of colloidal particles coated with a mixture of metal nanoparticles exhibiting multiple colors

[0073] After selecting seven metal nanoparticle mixtures showing seven colors equivalent to rainbow colors from the metal nanoparticle mixtures prepared in Example , each of the selected metal nanoparticle mixtures was applied to the surface with Amine-treated polystyrene beads. Because of the coating process, polystyrene beads (3.18 μm, Bangs Laboratories, 1 wt% aqueous solution) were diluted (5X), and then 0.5 ml of the diluted solution was mixed with 4 ml of each metal nanoparticle exhibiting seven colors equivalent to rainbow colors. The particle mixture was mixed and then adjusted to an OD (optical density) of 2.8.

[0074] Polystyrene beads were coated with the final mixture for one day at room temperature. It was confirmed that the coated polymer particles precipitated after 4 hours at room temperature, and they were easily separated with a ...

Embodiment 3

[0077] Example 3: Identification of polychromatic colloidal particles

[0078] Colloidal particles coated with the mixture of metal nanoparticles exhibiting various colors prepared in Examples can be identified with SEM (scanning electron microscope) and TEM (transmission electron microscope). That is, after separating the polymer particles coated with the metal nanoparticles prepared in Example 2, the surface structure thereof was analyzed using SEM ( FIG. 9 ) and the structure of the metal nanoparticles coated on the surface of the polymer particles was analyzed using TEM ( FIG. 10 ). ) for a thorough inspection.

[0079] Fig. 9 is a scanning electron microscopy (SEM) photograph showing the surface of colloidal particles obtained by coating a mixture of metal nanoparticles on the surface of polymer and silica particles. To easily distinguish each characteristic structure, red spherical gold nanoparticles, yellow spherical silver nanoparticles, a mixture of green spherical...

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

No PUM Login to View More

Abstract

The present invention relates to multicolor colloidal particles coated with a metal nanoparticle mixture having colors in the visible region and a method for preparing the same. In particular, relates to a metal nanoparticle mixture in which two or more nanoparticles selected from the group consisting of metal nanoparticles exhibiting red color; metal nanoparticles exhibiting yellow color; and metal nanoparticles exhibiting blue color, are mixed in various compositional ratio, multicolor colloidal particles in which polymer or mineral colloidal particles are coated with the metal nanoparticle mixture, and a method for preparing the same. According to the present invention, all colors that are in the visible region can be developed by suitably mixing metal nanoparticles exhibiting three colors, and multicolor colloidal particles can be prepared by coating polymer or mineral colloidal particles with a metal nanoparticle mixture exhibiting various colors.

Description

technical field [0001] The present invention relates to colloidal particles coated with a mixture of metal nanoparticles exhibiting colors in the visible spectral region and a method for their preparation. In particular, the present invention relates to a mixture of metal nanoparticles exhibiting colors in the visible spectrum region, wherein two or more nanoparticles are selected from the group consisting of metal nanoparticles exhibiting red, metal nanoparticles exhibiting yellow, and metal nanoparticles exhibiting blue. Groups of particles that are mixed in various composition ratios. The invention also relates to polychromatic colloid particles coated with a mixture of metal nanoparticles on polymer or inorganic colloid particles, and a preparation method thereof. Background technique [0002] Nanoparticles are composed of gold and silver, which have a phenomenon of strongly absorbing or scattering light of specific wavelengths (surface plasmon resonance effect). Due t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02B22F1/0545
CPCB01J13/00B22F2001/0037B01J13/02B01J19/0086B22F2998/00B22F2001/0029B82Y30/00B22F1/0022B22F1/0549B22F1/0553B22F1/0545B22F1/18B01J13/04
Inventor 郑峰贤林勇泰金真庆
Owner KOREA RES INST OF BIOSCI & BIOTECH
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