Space length adjustable crystal gel and method for preparing same

A technology of spacing and crystal gel, applied in the field of adjustable spacing crystal gel and its preparation, can solve the problems of non-closely packed colloidal crystal gel research that has not been reported, and achieve regular crystal gel arrangement, uniform properties, and better crystal gel arrangement. Effect

Inactive Publication Date: 2005-06-29
SOUTHEAST UNIV
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many patents and articles on the study of colloidal crystals have appeared in the world. There are domestic reports on the study of close-packed colloidal crystals, but there is no report on the study of non-close-packed colloidal crystal gels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A crystal glue with adjustable spacing, the spectral energy gap of the prepared crystal glue with adjustable spacing is from 200nm to 900nm.

Embodiment 2

[0022] A preparation method for preparing crystal glue with adjustable spacing, which is carried out in the following steps:

[0023] 1) Dialyze the colloidal spherical particles with a diameter of 80-250nm in water with a voltage of 500-3000V, and replace the dialysis water after each dialysis for at least 10 minutes until the conductivity of the dialysis water is 0.1-10μs / cm. The colloid was subjected to ultrasonic treatment for more than 1 minute,

[0024] 2) Dilute the colloid after ultrasonic dispersion to a volume concentration of 3-20% with a monomer solution of a neutral hydrogel polymer, and add an initiator caused by ultraviolet light to the diluted colloid solution and mix well, the The volume-to-weight ratio of the colloid solution and the initiator initiated by ultraviolet light is 100: (1~0.1), and the monomer solution of the above-mentioned neutral hydrogel polymer includes acrylamide polymer monomer and formazan as crosslinking agent Acrylamide, the molar rati...

Embodiment 3

[0026] A kind of preparation method that is used for preparing the crystal gel with adjustable spacing that the wavelength is 300nm, carries out according to the following steps successively:

[0027] 1) Dialyze the colloidal spherical particles with a diameter of 80nm in water with a voltage of 500-3000V, and replace the dialysis water after each dialysis for at least 10 minutes until the conductivity of the dialysis water is 0.1-10μs / cm,

[0028] 2) Ultrasonic treatment of the colloid after electric field dialysis for more than 1 minute,

[0029] 3) The colloid after ultrasonic dispersion is diluted to a volume concentration of 16.0% with a monomer solution of a neutral hydrogel polymer, and an initiator caused by ultraviolet light is added to the diluted colloid solution and mixed evenly, the colloid solution The volume-to-weight ratio of the initiator initiated by ultraviolet light is 100: (1-0.1), and the monomer solution of the above-mentioned neutral hydrogel polymer in...

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Abstract

The interval adjustable crystal colloid and its preparing method relate to an interval adjustable crystal colloid and its preparing method, whose spectrum spectrum can be 20-900nm. Concretely, the preparing method is: place the spheroidal particle whose diameter is 80-250nm into the water with high pressure for dialysis, and renew the water at least for ten minutes in each dialysis until the electric conductivity is 0.1-10ª–s / cm through the supersonic wave, the colloid (dispersed) being colloid (dispersed) is diluted by monomer solution of neutral hydrogel polymer (including ultraviolet light (acrylamide monomer and as the cross linker) ), in which the initiator of ultraviolet light (acrylamide monomer and as the cross linker) is added into the deprivate O2 and CO2, the crystal colloid is generated by ultraviolet light (acrylamide monomer and as the cross linker) raying.

Description

technical field [0001] The invention relates to a crystal glue with adjustable spacing and a preparation method thereof. Background technique [0002] Colloidal crystals are composed of three-dimensional periodic arrangements of dielectric materials, and colloidal crystals have many unique properties. These unique properties can be used to manufacture electronic, optical and sensing components, etc. Colloidal crystal glue has been used in the molecular detection and research of lead ions, glucose, inosine and other activities that affect life. [0003] At present, there are many patents and articles on the study of colloidal crystals in the world. There are domestic reports on the study of close-packed colloidal crystals, but there is no report on the study of non-close-packed colloidal crystal gels. There are many methods for preparing high-quality colloidal crystals, mainly including precipitation volatilization method, convective volatilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/00C08F2/48C08F4/04C08F20/56
Inventor 钱卫平董健曹跃霞
Owner SOUTHEAST UNIV
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