Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A kind of thermochromic fluorescent thermometer material and preparation method thereof

A thermochromic and thermometer technology, which is applied in the field of nanomaterials, can solve the problems of thermally active energy barriers and the scarcity of dual-emission materials, and achieve the effects of high sensitivity, simple preparation method, and good stability

Inactive Publication Date: 2016-04-13
ZHENGZHOU UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reports of dual-emission materials are scarce, mainly because it is very difficult to overcome the thermally active energy barrier between different chromospheres.
Besides, the Kasha rule only allows the lowest excited state to show emission thus restricting the existence of dual-emitting 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
  • A kind of thermochromic fluorescent thermometer material and preparation method thereof
  • A kind of thermochromic fluorescent thermometer material and preparation method thereof
  • A kind of thermochromic fluorescent thermometer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: synthetic thermochromic fluorescent thermometer material

[0016] Dissolve 17.4 mg of 2-naphthylmethylmercaptan (0.1 mmol) in a mixed solution of 3 mL of acetonitrile and 3 mL of acetone, and stir until completely dissolved. Add 44.2 mg (0.2 mmol) of silver trifluoroacetate to the above solution, and continue stirring until the solution is clear. After the reaction is finished, the solution is evaporated at room temperature in the dark to obtain crystals, which are then filtered to obtain a thermochromic fluorescent thermometer material.

Embodiment 2

[0017] Embodiment 2: Thermochromic phenomenon of thermochromic fluorescent thermometer material

[0018] Take the thermochromic fluorescent thermometer material sample prepared in Example 1, and it emits red light at room temperature under the irradiation of an ultraviolet lamp. When the sample is soaked in liquid nitrogen, it emits yellow light under the same UV lamp. When the sample temperature gradually increased to room temperature, its red color returned. The color change recognized by the naked eye can be applied to temperature sensing.

Embodiment 3

[0019] Embodiment 3: the measurement of fluorescence of thermochromic fluorescence thermometer material

[0020] Take the thermochromic fluorescent thermometer material sample prepared in Example 1 and test its solid-state emission spectrum in the range of 193-298K, and there are two emission peaks in the emission spectrum: a high-energy peak and a low-energy peak. The emission intensity of the high-energy peak decreases with the increase of temperature, and the emission intensity of the low-energy peak increases with the increase of temperature, and the ratio of the intensity of the high-energy peak to the low-energy peak has a linear relationship with temperature. Its good stability can be applied to temperature detection.

[0021] Get the thermochromic fluorescence thermometer material that embodiment 1 makes and do further characterization, its process is as follows:

[0022] (1) Determination of crystal structure

[0023] The X-ray single crystal diffraction data of the...

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 novel thermochromic fluorescent thermometer material and a preparation method thereof, belonging to the field of nanometer materials. Using a relatively mild self-assembly method, a silver nanocluster compound with dual emission, thermochromic properties, and temperature-sensitive controllable is obtained. The chemical formula of the silver nanocluster compound is: Ag12(SCH2C10H7)6(CF3CO2)6(CH3CN )6, belonging to the trigonal crystal system, the space group is R -3, a =23.9571(6)? , b =23.9571(6)? , c =16.5415(8)? , α =90°, b =90°, gamma =120°, V =8221.9(5)? 3. Its luminescent color changes from red to yellow with the decrease of temperature, and the ratio of fluorescence intensity between high energy peak and low energy peak has a linear relationship with temperature in the range of 193-298K. This kind of nanometer material has high sensitivity and has good application prospect in nanometer fluorescent thermometer.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a novel thermochromic fluorescent thermometer material and a preparation method thereof. Background technique [0002] Dual-emission materials are generally constructed of multiple chromophores or fluorescent spheres, which include organic dye molecules, quantum dot clusters, etc., and electrons or energy transfer are often accompanied by different chromophores. However, reports of dual-emission materials are scarce, mainly because it is very difficult to overcome the thermal activity barrier between different chromospheres. Besides, the Kasha rule only allows the lowest excited state to show emission thus restricting the existence of dual-emitting materials. [0003] Materials that respond thermochromically to temperature changes have become a research hotspot for scientists due to the visual signal readout and non-contact measurement. Remarkably, dual-emission m...

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 Patents(China)
IPC IPC(8): C09K9/02C07F1/10G01K11/32
Inventor 臧双全董喜燕徐庆庆
Owner ZHENGZHOU 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
Eureka Blog
Learn More
PatSnap group products