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A kind of preparation method of bimodal fluorescent nanorod

A technology of fluorescent nanometers and nanorods, which is applied in the field of preparation of bimodal fluorescent nanorods, can solve the problems of narrow fluorescence range, difficult adjustment of fluorescence intensity, difficulty in white light, etc., and achieves easy multiple use, easy control of luminous wavelength and luminous intensity , easy long-term storage effect

Active Publication Date: 2021-03-23
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In general, II-VI nanorods contain the toxic element Cd, while I-III-VI nanorods have a relatively narrow fluorescence range, and I-II-III-VI nanorods solve the above two problems well. , but its fluorescence intensity is not easy to adjust, and the above-mentioned nanorods are all single-beam fluorescence in LED applications, so it is relatively difficult to obtain white light

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  • A kind of preparation method of bimodal fluorescent nanorod
  • A kind of preparation method of bimodal fluorescent nanorod
  • A kind of preparation method of bimodal fluorescent nanorod

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Embodiment 1

[0027] A method for preparing bimodal fluorescent nanorods, the bimodal fluorescent nanorods are Mn-doped AgInZnS bimodal fluorescent nanorods, namely Mn:AgInZnS bimodal fluorescent nanorods, and the preparation steps are as follows:

[0028] (1) Preparation of Mn precursor solution: Add 0.4 mmol of manganese acetate tetrahydrate powder into 16 ml of n-dodecyl mercaptan, stir until the powder is completely dissolved, and then ultrasonic for 30 min, and obtain the Mn precursor solution after uniform dispersion;

[0029] (2) Preparation of Zn precursor solution: 8.4 mmol of zinc acetate (Zn(Ac) 2 ), 6ml oleylamine (OAm) and 12ml 1-octadecene (ODE) were added to the three-necked flask, and the solution was first passed through nitrogen (N 2 ) Remove the air in the flask for 10 minutes, and then heat the three-neck flask to 120°C under nitrogen gas flow until a clear solution is formed, then anneal to 60°C, and place it at this temperature to obtain a Zn precursor solution;

[00...

Embodiment 2

[0034] A method for preparing bimodal fluorescent nanorods, the bimodal fluorescent nanorods are Mn-doped AgInZnS bimodal fluorescent nanorods, namely Mn:AgInZnS bimodal fluorescent nanorods, and the preparation steps are as follows:

[0035] (1) Preparation of Mn precursor solution: Add 0.3 mmol of manganese acetate tetrahydrate powder to 12 ml of n-dodecyl mercaptan, stir until the powder is completely dissolved, then sonicate for 20 minutes, and obtain a Mn precursor solution after dispersing evenly;

[0036] (2) Preparation of Zn precursor solution: 7 mmol of zinc acetate (Zn(Ac) 2 ), 5ml oleylamine (OAm) and 10ml 1-octadecene (ODE) were added to the three-necked flask, and the solution was first passed through nitrogen (N 2 ) Remove the air in the flask for 10 minutes, and then heat the three-necked flask to 100°C under nitrogen gas flow until a clear solution is formed, then anneal to 50°C, and place it at this temperature to obtain a Zn precursor solution;

[0037] (3) P...

Embodiment 3

[0041] A method for preparing bimodal fluorescent nanorods, the bimodal fluorescent nanorods are Mn-doped AgInZnS bimodal fluorescent nanorods, namely Mn:AgInZnS bimodal fluorescent nanorods, and the preparation steps are as follows:

[0042] (1) Preparation of Mn precursor solution: Add 0.5 mmol of manganese acetate tetrahydrate powder into 20 ml of n-dodecyl mercaptan, stir until the powder is completely dissolved, then sonicate for 40 min, and obtain the Mn precursor solution after dispersing evenly;

[0043] (2) Preparation of Zn precursor solution: 9 mmol of zinc acetate (Zn(Ac) 2 ), 7ml oleylamine (OAm) and 14ml 1-octadecene (ODE) were added to the three-necked flask, and the solution was first passed through nitrogen (N 2 ) Remove the air in the flask for 10 minutes, and then heat the three-neck flask to 140°C under nitrogen gas flow until a clear solution is formed, then anneal to 50°C, and place it at this temperature to obtain a Zn precursor solution;

[0044] (3) P...

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Abstract

The invention discloses a preparation method of a double-peak fluorescent nanorod. The double-peak fluorescent nanorod is a Mn (manganese)-doped AgInZnS double-peak fluorescent nanorod. The preparation method comprises the following steps of (1) preparing an Mn precursor; (2) preparing an Zn (zinc) precursor solution; (3) preparing an S (sulfur) precursor solution; (4) preparing an AgInZnS nanorodsolution by a cationic reverse injection method; (5) preparing the Mn-doped AgInZnS double-peak fluorescent nanorod. The preparation method has the advantages that the preparation method is simple, and the spectrum is controllable; the possibility is provided for the regulating and control of the light emitting color of the nanorod and obtaining of white light emitting, and a good foundation is laid for white light semiconductor devices.

Description

technical field [0001] The invention relates to a method for preparing bimodal fluorescent nanorods, belonging to the technical field of nanomaterial preparation and application. Background technique [0002] With the increasing application of nanocrystals in LED devices, solar cells, ion detection, biomedicine and other fields, the preparation method and performance regulation of one-dimensional nanocrystals have become the focus of research due to their own optical polarization and other characteristics. In 1998, Li's group synthesized CdS nanorods by a solution-liquid-solid method. In 2013, Zou's group synthesized bimodal white Mn-CdS nanowires. Such nanocrystals contain the toxic element Cd, which limits their development in the application field. Then researchers began to study I-III-VI nanorods, such as CuInS 2 and AgInS 2 , in 2008, Wang's group synthesized various shapes of AgInS by controlling the reaction temperature and S source concentration 2 Nanocrystallin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/62B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/623
Inventor 徐淑宏董仁杰王春雷崔一平
Owner SOUTHEAST UNIV