Disilane functionalized carbon dots as well as preparation method and application thereof

A technology for functionalizing carbon and bis-silane, applied in chemical instruments and methods, semiconductor devices, luminescent materials, etc., can solve the problems of uncontrollable fluorescence emission wavelength blue-green light, poor integrated packaging performance, poor use performance, etc.

Active Publication Date: 2022-07-29
珠海市湖大派诺产业发展研究院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, no one has reported double-silane functionalized carbon dots with emission wavelength controllable function, and the preparation of organosilicon functionalized carbon dots usually uses one organosilane for functionalization at a time, and the fluorescence emission wavelength prepared is mostly blue. Green light cannot be adjusted
In addition, the existing organic silane functionalized carbon dots and packaging materials have poor performance in one-piece packaging, and poor performance in LED devices

Method used

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  • Disilane functionalized carbon dots as well as preparation method and application thereof
  • Disilane functionalized carbon dots as well as preparation method and application thereof
  • Disilane functionalized carbon dots as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033]Weigh 0.003mol of anhydrous citric acid and 0.1mol of absolute ethanol in a high-pressure reaction kettle with a pressure of 1MPa~3MPa, and add 0.0021mol of aminopropyltriethoxysilane and 0.0198mol of N-β-( Aminoethyl)-γ-aminopropyltrimethoxysilane, reacted at a constant temperature of 160 °C in an oven for 14 h, cooled to room temperature to obtain bissilane-functionalized carbon dots, and the bissilane-functionalized carbon dots were excited by 365 nm ultraviolet light. Green fluorescence.

Embodiment 2

[0035] Weigh 0.003mol of anhydrous citric acid and 0.1mol of anhydrous ethanol in an autoclave with a pressure of 1MPa~3MPa, and add 0.0063mol of aminopropyltriethoxysilane and 0.0154mol of N-β-(aminoethyl) to it. base)-γ-aminopropyltrimethoxysilane, reacted in a constant temperature oven at 185 °C for 12 h, and cooled to room temperature to obtain bissilane-functionalized carbon dots, which exhibited yellow fluorescence under the excitation of 365 nm ultraviolet light. .

Embodiment 3

[0037] Weigh 0.003mol of anhydrous citric acid and 0.1mol of anhydrous ethanol in an autoclave with a pressure of 1MPa~3MPa, and add 0.0147mol of aminopropyltriethoxysilane and 0.0066mol of N-β-(aminoethyl) to it. base)-γ-aminopropyltrimethoxysilane, reacted in a constant temperature oven at 210 °C for 10 h, and cooled to room temperature to obtain bissilane-functionalized carbon dots. The bis-silane-functionalized carbon dots exhibited red fluorescence under the excitation of 365 nm ultraviolet light .

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Abstract

The invention provides a disilane functionalized carbon dot as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The preparation method comprises the steps that anhydrous citric acid and a solvent are taken and added into a high-pressure reaction kettle, the pressure intensity of the high-pressure reaction kettle ranges from 1 MPa to 3 MPa, and the solvent is one or a combination of more of methyl alcohol, ethyl alcohol, propyl alcohol and isopropyl alcohol; adding an organosilane mixture containing monoamino organosilane and diamino organosilane into the high-pressure reaction kettle, wherein the molar ratio of the monoamino organosilane to the diamino organosilane in the organosilane mixture is 1: (0.25-50); and placing the high-pressure reaction kettle in a baking oven at 160-210 DEG C, and carrying out solvothermal reaction for 10-14 hours, so as to prepare the disilane functionalized carbon dots with different fluorescence emission wavelengths under the excitation of 365 nm ultraviolet light. The light-emitting wavelength of the double-silane functionalized carbon dot is adjustable, the preparation process is simple, and the invention further discloses application of the double-silane functionalized carbon dot in an LED device.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a bissilane-functionalized carbon dot and a preparation method and application thereof. Background technique [0002] In recent years, with the development of semiconductor lighting technology, light-emitting diodes are gradually replacing traditional lighting sources and become the most promising green lighting sources. According to the "Blue Book on the Development of China's Semiconductor Lighting Industry in 2019", the current consumption of LED general lighting products in my country in 2019 was as high as 6.3 billion pieces / set, with a penetration rate of 52.7%, saving 306.9 billion kWh of electricity and reducing carbon emissions by 2.4%. billion tons. Therefore, accelerating the development and promotion of LED manufacturing technology is of great significance for solving the increasingly severe problems of energy shortage and environmental pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y20/00B82Y40/00H01L33/50
CPCC09K11/65B82Y20/00B82Y40/00H01L33/504Y02B20/00
Inventor 孙争光曹文兵詹园武钰涵张玉红
Owner 珠海市湖大派诺产业发展研究院
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