Orange light and infrared emission polymer carbon nanodot and preparation method thereof

A near-infrared and polymer technology, applied in nano-carbon, nano-technology, nano-optics, etc., can solve the problems of low signal-to-noise ratio, lower resolution and sensitivity, and limit the development and application of carbon dots in live fluorescence imaging, and achieve broad Application prospect, low cost, good solubility

Inactive Publication Date: 2017-05-31
JILIN UNIV
View PDF3 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since 2004, many types of carbon dots have been successfully prepared, and the methods of synthesizing carbon dots are also various, but most of the obtained carbon dots emit blue or green fluorescence, red light and near-infrared band fluorescent carbon dots are rare
However, the absence of fluorescent carbon dots in red light and near-infrared bands greatly limits the further

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
  • Orange light and infrared emission polymer carbon nanodot and preparation method thereof
  • Orange light and infrared emission polymer carbon nanodot and preparation method thereof
  • Orange light and infrared emission polymer carbon nanodot and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] Preparation of near-infrared emitting polymer carbon dots

[0021] Preparation of near-infrared emitting polymer carbon dots: Take 0.184g (1mmol) of dopamine and 0.108g (1mmol) of o-phenylenediamine, dissolve them in 10mL of deionized water, and add 37% concentrated hydrochloric acid aqueous solution to make the reaction system The pH value is 5.3, stir it with a glass rod. The liquid was transferred into a 20mL polytetrafluoroethylene-lined stainless steel reaction vessel, the lid was tightened, and the reaction vessel was reacted at 200°C for 8 hours, and the reaction vessel was allowed to cool to room temperature naturally. Then add absolute ethanol for ultrasound, so that the product attached to the reactor lining is fully dissolved in the ethanol solution. The obtained liquid was transferred into a pear-shaped bottle, the solvent ethanol was removed with a rotary evaporator, and then the obtained solid was vacuum dried at 60° C., and finally 0.072 g...

Example Embodiment

[0024] Example 2

[0025] Preparation of orange-red fluorescent carbon dots

[0026] Preparation of orange-red emitting polymer carbon dots: Take 0.184g of dopamine and 0.108g of o-phenylenediamine, dissolve them in 10mL of deionized water, and then add 37% concentrated hydrochloric acid aqueous solution to make the pH of the reaction system 5.3. Stir well with a glass rod. The liquid was transferred into a 20mL polytetrafluoroethylene-lined stainless steel reaction vessel, the lid was tightened, and the reaction was carried out at 150°C for 8 hours, and the reaction vessel was naturally cooled to room temperature. Then add absolute ethanol for ultrasound, so that the product attached to the reactor lining is fully dissolved in the ethanol solution. The obtained liquid was transferred into a pear-shaped bottle, the solvent ethanol was removed with a rotary evaporator, and then the obtained solid was vacuum dried at 60° C. to finally obtain 0.061 g of solid powder.

[0027] It is f...

Example Embodiment

[0028] Example 3

[0029] Due to the high fluorescence quantum yield of the obtained long-wavelength polymer carbon dots, we apply them to in vivo biological imaging. We subcutaneously injected the orange-red emitting polymer carbon dot ethanol solution obtained in Example 2 into nude mice. by Figure 7 It can be clearly seen that the obtained in vivo fluorescence imaging effect is very good, and the interference of the short-wavelength fluorescence emission of the organism is well eliminated.

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
Heightaaaaaaaaaa
Login to view more

Abstract

The invention discloses orange light and near-infrared emission polymer carbon nanodots and a preparation method thereof, and belongs to the technical field of carbon nanomaterial preparation. A hydrothermal reaction is carried out in a high-temperature reaction kettle by using a mixed solution of dopamine and o-phenylenediamine so as to prepare a carbon dot water solution, and carbon dot solid powder with high quantum yield is obtained through simple separation and purification. The method disclosed by the invention overcomes the disadvantages of an existing method that the preparation is difficult, the cost is high and the emission wavelength of the prepared carbon dots is short, and the near-infrared emission polymer carbon dots can be obtained through simple one-step hydro-thermal synthesis of two molecules. The obtained polymer carbon dots are dispersed in an ethanol solution, and under the irradiation of a portable ultraviolet lamp, the polymer carbon dots can give out bright red light. The method disclosed by the invention is simple and practicable, low in cost and high in yield, is applicable to mass production, and has wide application prospects in the fields such as biological living imaging, fluorescence printing and warm white diode illumination.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterial preparation, in particular to an orange-red light and near-infrared emitting polymer carbon nano-dot with high fluorescence quantum yield prepared by hydrothermal method using two molecules of dopamine and o-phenylenediamine Preparation. Background technique [0002] Fluorescent carbon dot material is a new kind of fluorescent probe material. Due to its low toxicity, effective chemical modification, good stability and biocompatibility, it has broad application prospects in the fields of bioimaging, medical diagnosis, catalysis and photovoltaic devices. Therefore, fluorescent carbon dot materials are called "a new generation of carbon nano light". [0003] Since 2004, many types of carbon dots have been successfully prepared, and the methods of synthesizing carbon dots are also varied. However, most of the obtained carbon dots emit blue or green fluorescence, and red light and near-in...

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): C09K11/65C01B32/15B82Y40/00B82Y20/00
CPCB82Y30/00B82Y40/00C09K11/65Y02B20/00
Inventor 杨柏卢思宇朱守俊
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap