Color-changing organic-inorganic hybrid material, and preparation method and application of material

Abstract

The invention discloses a color-changing organic-inorganic hybrid material, and a preparation method and an application of the material. A chemical formula of the material is [Cd3(CPBPY)2(BDC)3], wherein CPBPY is 3-benzoic acid-4,4'-dipyridyl; and BDC is p-benzene dicarbonic acid. The preparation method of the material comprises the steps of dissolving cadmium nitrate, terephthalic acid and monochlorated-3-benzoxy-4,4'-dipyridyl in a mixed solvent prepared from ethanol, water and N,N'-dimethylformamide proportionally under a solvothermal condition, heating for 5-10 days at 100 DEG C, cooling at a speed of 5-10 DEG C / h, performing filtration and washing to form a yellow blocky crystal, putting the crystal in a Shrek tube, performing vacuumizing till an oxygen content not exceeding 0.06ppm,irradiating a sample with a high-pressure mercury lamp, and obtaining a target product when the sample in the tube is changed to light blue from yellow. The crystal is stable in structure under a vacuum condition; the synthesis is simple; conditions are mild; the operation is convenient; low-concentration oxygen is detected quickly under a room temperature condition; the sensitivity is high; the testing cost is low; and the material has good application prospects in an aspect of oxygen molecule detection.

Description

Technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a color-changing organic-inorganic hybrid material and a preparation method and application thereof. Background technique [0002] With the rapid development of science and technology in my country, the detection of molecular oxygen has received widespread attention, and it is also playing an increasingly important role in many scientific fields such as life sciences, biology, meteorology, oceanography, medicine, and the environment. In the detection of molecular oxygen technology, oxygen content is an important control index. Choosing suitable oxygen content analysis and testing methods and equipment according to actual conditions is an important prerequisite for ensuring accurate oxygen content determination. At present, the main methods of oxygen content analysis are: 1. Chemical methods, including chemical colorimetry and chemical volumetric method, whic...

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Problems solved by technology

[0003] The above-mentioned methods for analyzing and detecting oxygen content all need the assistance of relevant instruments. At present, some traditional sensors for detecting oxygen include Clark type electrodes and optical devices, but the sensitivity of Clark type oxygen sensors to detect oxygen is not enough, and optical oxygen sensors need the help of a fluorometer In the detection process, it is judged that the luminescence performance of the material will be strengthened or quenched with the concentration of oxygen. This kind of fluorescence instrument is expensive, the detection cost is high, and the operation is relatively complicated.

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