Quantum dot composite material containing paraffin and preparation method thereof

A composite material and quantum dot technology, which is applied in the field of paraffin-containing quantum dot composite material and its preparation, can solve the problem of inability to prepare temperature-sensitive quantum dots, etc., and achieves strong temperature sensitivity, increased light transmittance, and high luminous efficiency. Effect

Inactive Publication Date: 2016-03-23
JUANCHENG RUIDING TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing technology cannot prepare quantum dots with very high temperature sensitivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Take 100g of 25 gram whose phase transition temperature is 25 ℃ # Add paraffin wax and 20g sodium lauryl sulfate to 700g ethanol aqueous solution, wherein the mass ratio of absolute ethanol to water is 4:1. Heat in a water bath at 40°C, and mechanically stir for 30 minutes after the paraffin melts to obtain a uniformly dispersed emulsion; add 80 g of tetraethyl orthosilicate dropwise to the above emulsion, add NaOH solution to adjust the pH to 10, and continue stirring at constant temperature for 3 hours , aged at room temperature, filtered, washed, and dried to obtain silica nanospheres. According to the characterization of the scanning electron microscope photos, it can be seen that the particle size of the silica nano-microspheres is 80nm-110nm, the particle size distribution is uniform, and the shape of the silica nano-microspheres is relatively regular and the surface is smooth.

[0030] (2) Cut the light-transmitting ITO conductive glass into small pieces of ...

Embodiment 2

[0040] (1) Take 100g of 35 gram with a phase transition temperature of 35°C # Add paraffin and 20g sodium tetradecyl sulfate to 500g ethanol aqueous solution, wherein the mass ratio of absolute ethanol to water is 4:1. Heat in a water bath at 50°C, and mechanically stir for 30 minutes after the paraffin wax is melted to obtain a uniformly dispersed emulsion; add 160 g of tetraethyl orthosilicate dropwise to the above emulsion, add NaOH solution to adjust the pH to 10, and continue stirring at constant temperature for 4 hours , aged at room temperature, filtered, washed, and dried to obtain silica nanospheres. According to the characterization of the scanning electron microscope photos, it can be seen that the particle size of the silica nano-microspheres is 80nm-120nm, the particle size distribution is uniform, and the shape of the silica nano-microspheres is relatively regular and the surface is smooth.

[0041] (2) Cut the light-transmitting ITO conductive glass into small ...

Embodiment 3

[0050] (1) Take 100g of 58 with a phase transition temperature of 58°C # Add paraffin wax and 30g sodium lauryl sulfate to 900g ethanol aqueous solution, wherein the mass ratio of absolute ethanol to water is 3:1. Heat in a water bath at 65°C, and mechanically stir for 30 minutes after the paraffin melts to obtain a uniformly dispersed emulsion; add 240 g of tetraethyl orthosilicate dropwise to the above emulsion, add NaOH solution to adjust the pH to 10, and continue to stir at constant temperature for 4 hours , aged at room temperature, filtered, washed, and dried to obtain silica nanospheres. The particle size of the silica nano-microspheres is 80nm-140nm, and the distribution is relatively uniform.

[0051] (2) Cut the light-transmitting ITO conductive glass into small pieces of 2*1.5cm, place the cut pieces of conductive glass in dilute hydrochloric acid, absolute ethanol, and deionized water for ultrasonic cleaning for 15 minutes, and dry them for use. Weigh 1 g of sil...

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Abstract

The invention discloses a quantum dot composite material containing paraffin and a preparation method thereof. The quantum dot composite material includes a light-transmitting substrate, quantum dots and silicon dioxide nanospheres. The quantum dots are self-assembled on the surfaces of the silicon dioxide nanospheres. Each silicon dioxide nanosphere includes a shell layer being SiO2 and an inner core being the paraffin. The quantum dot composite material maintains the excellent characters of high luminescence efficiency, high photo-chemical stability and the like. The luminescence intensity of the composite material is relative to a special temperature sensitive value, so that the composite material can be used for correlating or monitoring special temperature. The composite material is excellent in reusability and the quantum dots are free from falling off.

Description

technical field [0001] The invention relates to a quantum dot composite material, in particular to a quantum dot composite material containing paraffin and a preparation method thereof. Background technique [0002] When the size of the material is reduced to the nanometer level, due to its nano effect, the material will produce many novel and unique functional properties superior to traditional materials, and has a wide range of application values ​​in the fields of microelectronics, bioengineering, chemical engineering, and medicine. . [0003] In recent years, nano-luminescent materials with transition metals as active ions have been widely used in light-emitting devices, fluorescence imaging, solar cells, Fields such as fluorescence detection and biomarkers show broad application prospects. However, when quantum dots are used in light-emitting devices or fluorescence detection, in the range of 25-100°C, the red shifts of the quantum dot absorption peak wavelength and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/59C09K11/88C09K11/70C09K11/74C09K11/06G01N21/64B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C09K11/025C09K11/06C09K11/59C09K11/70C09K11/74C09K11/88G01N21/643
Inventor 莫婉玲
Owner JUANCHENG RUIDING TECH CO LTD
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