Unlock instant, AI-driven research and patent intelligence for your innovation.

Synthesis method of silver sulfide quantum dot sol with near infrared emission property

A technology of emission performance and synthesis method, which is applied in chemical instruments and methods, luminescent materials, etc., to achieve the effect of good near-infrared luminescence performance and good application prospects

Active Publication Date: 2017-02-15
EAST CHINA NORMAL UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since hemoglobin, oxyhemoglobin and water, the main components of biological tissue, have great absorption of light in the visible wavelength range, quantum dots with emission wavelengths in the visible range are not suitable for biological imaging materials.

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
  • Synthesis method of silver sulfide quantum dot sol with near infrared emission property
  • Synthesis method of silver sulfide quantum dot sol with near infrared emission property
  • Synthesis method of silver sulfide quantum dot sol with near infrared emission property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a. Take 0.1358g AgNO 3 and 2.2107g thioglycolic acid (TGA), respectively placed in 10ml of n-butanol (the amount of silver nitrate is 0.01358g / ml, the ratio of TGA to AgNO3 is 30), and then mixed with the two The solution was purged with nitrogen to remove oxygen, and then both solutions were heated to 90°C simultaneously.

[0018] b. Add the TGA mixed solution at 90°C in step a dropwise to the AgNO at 90°C 3 In the mixed solution, the temperature of 90° C. was maintained for 8 hours to obtain a silver sulfide quantum dot sol with near-infrared emission properties excited by a near-infrared light source.

[0019] Depend on figure 1 It can be seen that the prepared silver sulfide quantum dots have good dispersion and relatively uniform size. figure 2 It is found that the silver sulfide quantum dot sol has an absorption peak at 804nm, which indicates that near-infrared light can be selected as the excitation light source. image 3 It shows that under the excitation o...

Embodiment 2

[0021] a. Take 0.1365g AgNO 3 and 1.8430 thioglycolic acid (TGA), respectively placed in 10ml of n-butanol (the amount of silver nitrate is 0.01365g / ml, TGA and AgNO 3 The ratio of the amount of substances is 25), and then nitrogen gas is passed through the two mixed solutions to remove oxygen, and then the two solutions are heated to 80°C at the same time.

[0022] b. Add the TGA mixed solution at 80°C in step a dropwise to the AgNO at 80°C 3 In the mixed solution, the temperature of 80° C. was maintained for 8 hours to obtain a silver sulfide quantum dot sol with near-infrared emission properties excited by a near-infrared light source.

Embodiment 3

[0024] a. Take 0.3058g AgNO 3 and 4.9750g thioglycolic acid (TGA), were placed in 10ml of n-butanol (the amount of silver nitrate is 0.03058g / ml TGA and AgNO 3 The ratio of the amount of substances is 30), and then nitrogen is passed into the two mixtures respectively to remove oxygen, and then both are heated to 80°C simultaneously.

[0025] b. Add the TGA mixed solution at 80°C in step a dropwise to the AgNO at 80°C 3 In the mixed solution, the temperature of 80° C. was maintained for 9 hours to obtain a silver sulfide quantum dot sol with near-infrared emission properties excited by a near-infrared light source.

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 invention discloses a synthesis method of a silver sulfide quantum dot sol with a near infrared emission property, and the method comprises the following steps: 1, taking silver nitrate and mercaptoacetic acid to respectively put into a n-butanol solvent with a same volume, then introducing nitrogen respectively into a silver nitrate and n-butanol mixed solution and a mercaptoacetic acid and n-butanol mixed solution to remove oxygen, and simultaneously heating the silver nitrate and n-butanol mixed solution and the mercaptoacetic acid and n-butanol mixed solution to 60 DEG C-100 DEG C; and 2, adding dropwise the mercaptoacetic acid and n-butanol mixed solution into the silver nitrate and n-butanol mixed solution of the step 1, continuing to heat to 60 DEG C-100 C, and holding for 8-10 hours to obtain the silver sulfide quantum dot sol with the near infrared emission property. The silver sulfide quantum dot sol has a very good near-infrared luminescence property, and has good application prospects in biological field.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis materials, in particular to a method for synthesizing silver sulfide quantum dots with near-infrared emission performance excited by a near-infrared light source. Background technique [0002] Since quantum dots with fluorescent properties have many excellent properties, such as high photochemical stability, large Stokes shift, long fluorescence lifetime, wide excitation spectrum, and narrow emission spectrum, etc., quantum dots have been increasingly Many researchers have paid attention to it, and quantum dots have potential application value in the fields of bioimaging, biomarkers, and nanodiagnostics. [0003] In past studies, light in the ultraviolet or visible wavelength range was often used as the excitation light source for quantum dots. The light energy in the ultraviolet and visible wavelength ranges is relatively high, and may cause damage to biological tissues. Therefore, i...

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): C09K11/58
CPCC09K11/582
Inventor 李强张艳艳杨薇王丹丹郑慧萍杜元生李喜
Owner EAST CHINA NORMAL UNIV