Space length adjustable crystal gel and method for preparing same

A spacing and crystal technology, which is applied in the field of crystal gel with adjustable spacing and its preparation, can solve the problems that the research of non-close packed colloidal crystal gel has not been reported, and achieve the effects of regular arrangement of crystal gel, improved efficiency and low cost

Inactive Publication Date: 2006-05-24
SOUTHEAST UNIV
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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 prepared crystal glue with adjustable spacing has a spectral energy gap from 200 nm to 900 nm.

Embodiment 2

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

[0023] 1) Place the spherical particle colloid with a diameter of 80-250nm and place it in water with a voltage of 500-3000V for dialysis. After each dialysis for at least 10 minutes, replace the dialysis water until the conductivity of the dialysis water is 0.1-10μs / cm. After dialysis against the electric field The colloid was ultrasonically treated for more than 1 minute,

[0024] 2) The colloid after ultrasonic dispersion is diluted to a volume concentration of 3-20% with a monomer solution of a neutral hydrogel polymer, and an initiator induced by ultraviolet light is added to the diluted colloid solution to mix evenly. The volume weight ratio of the colloid solution to the initiator initiated by ultraviolet light is 100: (1~0.1), and the monomer solution of the neutral hydrogel polymer includes acrylamide polymer monomer and ...

Embodiment 3

[0026] A preparation method for preparing a pitch-adjustable crystal glue with a wavelength of 300nm, the following steps are followed in sequence:

[0027] 1) Dialyze the spherical particle colloid 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) ultrasonically treat 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 initiated by ultraviolet light is added to the diluted colloid solution to mix well. The volume weight ratio to the initiator initiated by ultraviolet light is 100:(1~0.1), and the monomer solution of the neutral hydrogel polymer includes acrylamide polymer monomer and methacrylamide as a crosslinking agent , the molar rat...

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Abstract

The crystal gel with adjustable spacing and its preparation method relate to a crystal gel with adjustable spacing and a preparation method thereof. The prepared crystal gel with adjustable spacing has a spectral energy gap from 200nm to 900nm. The preparation method: spherical particles with a diameter of 80-250nm The colloid is placed in high-pressure water for dialysis, and the dialysis water is replaced for at least 10 minutes each time, until the conductivity of the dialysis water is 0.1-10μs / cm. The colloid after electric field dialysis is ultrasonically treated, and the colloid dispersed by ultrasonic Dilute the monomer solution of the neutral hydrogel polymer, and add the initiator caused by ultraviolet light to the diluted colloid solution and mix well. The above-mentioned monomer solution of the neutral hydrogel polymer includes acrylamide polymer monomer body and methylene acrylamide as a cross-linking agent, remove oxygen and carbon dioxide, stand still, and initiate polymerization to form gel under the condition of ultraviolet light irradiation, that is, crystal gel.

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 arrangement of dielectric materials, and colloidal crystals have many unique properties. These unique properties can be used to manufacture electronic, optical and sensing elements, among others. Colloidal crystal glue has been used in the detection and research of molecules affecting life activities such as lead ions, glucose, and inosine. [0003] At present, there are many patents and articles on the research of colloidal crystals in the world. There are reports on the research on closely packed colloidal crystals in China, but there is no report on the research on non-closely packed colloidal crystals. There are many preparation methods for high-quality colloidal crystals, mainly including precipitation volatilization method, convecti...

Claims

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Application Information

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