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Method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as template

A technology of perylene imide and derivatives, applied in the field of organic template preparation of cadmium sulfide nanoparticles

Inactive Publication Date: 2012-11-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of using the Langmuir membrane of amphiphilic PDI derivatives as a template to control the growth of CdS nanoparticles has not been reported so far.

Method used

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  • Method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as template
  • Method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as template
  • Method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as template

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0061] 1 Obtain PDI-1 in high-purity water and CdCl through π-A curve 2 Conditions for Formation of Stable Langmuir Membrane in Two Subphases of Solution

[0062] Prepare 0.304 mg / mL of PDI-1 in dichloromethane (the structure of PDI-1 is as figure 1 Shown in A), respectively measured in high-purity water and 5×10 -2 mol / L, 5×10 -3 mol / L and 5×10 -4 mol / L of CdCl 2 The π-A curve of the solution ( figure 2 A). Then measure PDI-2 at 5×10 -4 mol / L of CdCl 2 π-A curves of self-assembly in solution for 3h, 9h and 12h ( figure 2 B). Get samples in CdCl 2 The optimal conditions for the formation of Langmuir in the solution subphase are: the sample self-assembly time is 3h, CdCl 2 The solution concentration is 5×10 -4 mol / L. The π-A curve of the sample in high-purity water ( Figure 4 A, solid line) with the best CdCl 2 The π-A curve under solution subphase conditions ( Figure 4 A, dotted line) for comparison, it can be seen that the single molecular area of ​​PDI-1 ...

example 2

[0079] 1 Obtain PDI-1 in high-purity water and CdCl through π-A curve 2 The conditions for forming a stable Langmuir film in the two subphases of the solution are consistent with the method and conclusion of the "1" part in "Example 1".

[0080] 2 Induced preparation of CdS nanoparticles using the Langmuir membrane of PDI-1 as a template

[0081] (1) Preparation of PDI-1 monolayer film

[0082] It is consistent with the method and conclusion of the "2(1)" part in "Example 1".

[0083] (2) Preparation of PDI-1 derivatives as templated CdS nanoparticles

[0084] In a small beaker, add 6mL of 5×10 -4 mol / L of CdCl 2 The solution is used as a subphase, and 5 μL of 0.304 mg / mL PDI-1 dichloromethane solution is carefully dropped onto the surface of the subphase with a micro-syringe, and left to stand for 15 minutes. After the dichloromethane is completely volatilized, PDI-1 will 2+ A stable Langmuir monolayer film is formed on the surface of the subphase. will be filled with N...

example 3

[0093] 1 Obtain PDI-1 in high-purity water and CdCl through π-A curve 2 The conditions for forming a stable Langmuir film in the two subphases of the solution are consistent with the method and conclusion of the "1" part in "Example 1".

[0094] 2 Induced preparation of CdS nanoparticles using the Langmuir membrane of PDI-1 as a template

[0095] (1) Preparation of PDI-1 monolayer film

[0096] It is consistent with the method and conclusion of the "2(1)" part in "Example 1".

[0097] (2) Preparation of PDI-1 derivatives as templated CdS nanoparticles

[0098] In a small beaker, add 6mL of 5×10 -4 mol / L of CdCl 2 The solution is used as a subphase, and 5 μL of 0.304 mg / mL PDI-1 dichloromethane solution is carefully dropped onto the surface of the subphase with a micro-syringe, and left to stand for 15 minutes. After the dichloromethane is completely volatilized, PDI-1 will 2+ A stable Langmuir monolayer film is formed on the surface of the subphase. will be filled with N...

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Abstract

The invention relates to a method for preparing flower-like nano cadmium sulfide by using perylene bisimide derivatives as a template. By controlling different reaction time lengths between the system and the H2S gas, a Langmuir film formed by two amphiphilic perylene diimide compounds (PDI-1 and PDI-2) in novel structures on a CdCl2 subphase surface is used as a template for the first time to successfully prepare CdS nanoparticles with different flower-like shapes, of which the particle sizes are respectively 20nm, 30nm, 40nm, 60nm and 80nm. Various means are utilized to comprehensively characterize the microstructure and shape. The method is simple to operate, and the reaction process is easy to control and is carried out in a water phase at room temperature; and thus, the invention has the advantages of mild preparation conditions and low cost, and is easy to implement.

Description

technical field [0001] The invention relates to a method for preparing cadmium sulfide nanoparticles with an organic template, which has low preparation cost, is easy to realize, and [0002] The cadmium sulfide molecule can be controlled to grow on the specific position of the template molecule in the Langmuir film, and cadmium sulfide nanoparticles with different shapes and sizes can be controlled. Background technique [0003] Perylene tetracarboxylic acid diimide (PDI) compounds are widely used in optical devices such as organic light-emitting diodes, dyeing lasers, and optical switches due to their good chemical stability, light, thermal stability, and high fluorescence quantum yield. And electronic devices and many other fields have a wide range of applications. In addition, PDI derivatives are also one of the most excellent n-type organic semiconductor materials so far. Cadmium sulfide is the most important n-type semiconductor of II-VI groups, and is now widely use...

Claims

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Application Information

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IPC IPC(8): C01G11/02B82Y30/00
Inventor 陈艳丽宋金刚田庆文
Owner UNIV OF JINAN
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