Ultraviolet light-driven molecular crystal-polymer composite film material and preparation method thereof

A polymer film and composite film technology, applied in the field of ultraviolet light-driven molecular crystal-polymer composite film material and its preparation, can solve the problems of fragility, low deformation accuracy, small deformation amount, etc., and achieves simple preparation, physical and chemical Stable properties and low cost effects
CN105199282BActive Publication Date: 2018-08-10SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Publication Date
2018-08-10

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Abstract

The invention discloses an ultraviolet light-driven molecular crystal-polymer composite film material and a preparation method thereof. The composite thin film material includes: a polymer thin film, and nanocrystals of organic dye molecules distributed in the thin film. Structured organic dye molecules. Preferably, the organic dye molecular nanocrystals form an array structure in a closely arranged manner. The preparation method of the composite material includes: uniformly mixing the organic dye molecular nanocrystals and the polymer in a solvent, spreading them on the substrate, allowing the organic dye molecular nanocrystals to self-assemble, and volatilizing the solvent, so as to obtain the composite material. film material. The composite film material of the invention has the characteristics of large size, large deformation, good flexibility, fast light response speed, simple preparation, low cost, stable physical and chemical properties, deformation direction not affected by light direction, and the like.
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Description

technical field

[0001] The invention relates to a material for realizing the direct conversion of light energy to mechanical energy, in particular to an ultraviolet light-driven molecular crystal-polymer composite thin film material and a preparation method thereof. Background technique

[0002] At present, materials that can convert ultraviolet energy into mechanical energy, or produce deformation responses to ultraviolet energy, mainly include organic dye molecular crystals and azobenzene-containing polymer liquid crystals. The principle is to take advantage of the high energy characteristics of ultraviolet photons, which can trigger reversible chemical reactions of certain photoactive groups.

[0003] Azobenzene-containing polymer liquid crystals, whose mesogens are long rod-shaped molecules containing azo groups, are arranged in a nematic phase at room temperature. Under the irradiation of ultraviolet light, part of the liquid crystal molecules on the surface of the fil...

Claims

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