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A bonded polyurethane nonlinear optical material and its preparation method and application

A technology of nonlinear optics and polyurethane, applied in the field of optical materials, can solve the problems of few reports on optical nonlinearity of composite materials, achieve good thermomechanical properties and optical transparency, overcome poor processability, and limit performance of strong light Effect

Active Publication Date: 2022-06-03
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding pyrene derivatives to polyurethane materials, there are few reports on the study of optical nonlinearity of composite materials.

Method used

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  • A bonded polyurethane nonlinear optical material and its preparation method and application
  • A bonded polyurethane nonlinear optical material and its preparation method and application
  • A bonded polyurethane nonlinear optical material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation of a bonded polyurethane S1 / PU nonlinear optical material comprises the following steps:

[0052]a. Add 0.115 g (0.7 mmol) of azobisisobutyronitrile (AIBN) to 7.8 g (0.06 mol) of hydroxyethyl methacrylate (HEMA), and stir to completely dissolve to obtain a HEMA solution in which AIBN is dissolved.

[0053] b. In a 125mL round-bottomed flask, add 39mg (0.08mmol) of compound S1 to 18g (0.03mol) of polyethylene glycol (PEG600), and add 13.36g (0.06mol) of isophorone diisocyanate (IPDI) after complete dissolution ). Mechanical stirring was performed for 5-10 min at a water bath temperature of 25°C, and then 0.037 g of dibutyltin dilaurate (DBTL) was added as a catalyst. After the reaction solution became clear, the stirring was continued for 15-20 min, and then the HEMA solution of AIBN was added, and the stirring was stopped after the reaction for 15-20 min. Polyethylene glycol (PEG600), compound S1, hydroxyl groups on HEMA were reacted with isocyanate gr...

Embodiment 2

[0062] The preparation of a bonded polyurethane S2 / PU nonlinear optical material comprises the following steps:

[0063] The preparation process of S2 / PU is the same as the preparation process of S1 / PU nonlinear optical material, only the compound S1 in step b is replaced with compound S2, and finally the S2 / PU nonlinear optical material is obtained.

[0064] Adjust the dosage of compound S2 to obtain S2 / PU nonlinear optical materials without compound S2, and the mass content of compound S2 is 0.01%, 0.03%, 0.05%, 0.07%, 0.1%, 0.2%, respectively. Physical picture such as figure 1 shown.

[0065] Depend on figure 1 It can be seen that with the increase of the content of compound S2, the optical color of the S2 / PU nonlinear optical material gradually changes from yellow to red, and also has good optical transparency, which can be used as an optically transparent material.

Embodiment 3

[0067] The preparation of a bonded polyurethane S3 / PU nonlinear optical material comprises the following steps:

[0068] The preparation process of the S3 / PU sheet is the same as the preparation process of the S1 / PU nonlinear optical material. It is only necessary to replace the compound S1 in the step b with the compound S3, and finally the S3 / PU nonlinear optical material is obtained.

[0069] Adjust the amount of compound S3 to obtain S3 / PU nonlinear optical materials without compound S3, and the mass content of compound S3 is 0.05%, 0.1%, 0.2%, respectively. The actual picture of each optical material is as follows figure 1 shown.

[0070] Depend on figure 1 It can be seen that with the increase of the content of compound S3, the color of the S3 / PU nonlinear optical material gradually deepens, has good optical transparency, and can be used as an optically transparent material.

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Abstract

The invention provides a bonded polyurethane nonlinear optical material and its preparation method and application. The bonded polyurethane nonlinear optical material is prepared by connecting a small molecule pyrenyl Schiff base derivative to a polyurethane system, so that Compared with small molecule pyrenyl Schiff base derivatives, polyurethane materials that do not have optical nonlinearity have stronger anti-saturation absorption and optical limiting properties. By changing the content of small molecule pyrenyl Schiff base derivatives, its own optical nonlinearity can be controlled, and the purpose of adjusting its optical nonlinear properties has been achieved, and it has a controllable optical nonlinear response. The bonded polyurethane nonlinear optical material of the present invention has fast optical nonlinear response speed, short recovery time and is indistinguishable in the picosecond time domain, and can be prepared and applied as optical limiting and all-optical switching materials.

Description

technical field [0001] The invention relates to a bonded polyurethane nonlinear optical material, a preparation method and application thereof, and belongs to the field of optical materials. Background technique [0002] Pyrene and its derivatives are widely used in many scientific fields, such as organic light-emitting diodes, organic photovoltaic cells (OPVs), microenvironmental sensors, laser dyes, and biological probes. In addition, pyrene can be used as a basic unit for the construction of π-conjugated extended derivatives. The π-conjugated system consists of connected π bonds, and the π electrons move in the conjugated system, and these structures can significantly modulate the optical nonlinearity of the material. Pyrene derivatives have abundant π electrons, which make them have high optical transmittance in the visible light region. Therefore, pyrene and its derivatives have broad application prospects in nonlinear optics (NLO), such as optical limiting (OL) and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/48C08G18/75C08F299/06
CPCC08G18/679C08G18/672C08G18/4833C08G18/755C08F299/065C08G18/48Y02P20/10
Inventor 高丽君张保丁崔静杨皓然方少明周立明李碧宇弋皓月宋瑛林李峰
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY