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AssigneeQingdao University
InventorsKewei ZHANG, Kai LIU, Yanzhi XIA, Xiankai LI, Zhe CHEN, Hui BIN
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The present invention provides a facile heteroepitaxial method for growing conductive zinc-catecholate frameworks on bio-fibers with biomimetic connections, which is beneficial to fabricate biocompatible and high-performance photodetectors and chemiresistors, and the corresponding bio-fiber based metal-organic framework. In this method, a conductive layer is first introduced on the surface of polysaccharide bio-fibers, before well-aligned zinc oxide nanoarrays were densely constructed on the bio-fibers by a physiological coagulation mechanism. The obtained fibrous materials may be used in devices, including in electronic components, having the advantages of good stability, environmental-friendly, flame retardancy, and high response.
The invention effectively solves the problem that functional nanomaterials are difficult to grow on the surface-swelling bio-fibers, and the prepared bio-fiber based metal-organic framework compound material grows firmly and densely on the fiber surface layer by layer due to chemical bonding.
The material described in the present invention is based on bio-fibers. Unlike common substrate materials (e.g., conductive glass, silicon wafers, carbon cloth, polymer films, and other flat substrates), the surface of the fibrous substrate is curved and curved, and the surface cannot be completely covered when the material is grown by magnetron sputtering, liquid phase epitaxy, etc., but the present invention uses low temperature hydrothermal method to effectively solve this problem.
The bio-fiber based metal-organic framework compound material described in the present invention can be made into a variety of forms of fibrous and paper-based photoelectric sensor devices, flexible gas-sensitive devices for highly sensitive detection of different wavelengths of light as well as toxic and hazardous gases.
Dependencies are inferred from the claim text.