Color-change indicator used for detecting oxygen, synthesizing method thereof, oxygen sensor and preparation method of oxygen sensor

An oxygen sensor and indicator technology, which is applied in the fields of a color-changing indicator for detecting oxygen and its synthesis, an oxygen sensor and its preparation, can solve the problems of low reusability, complicated preparation process, slow response speed, etc. Good usability, simple preparation process and quick response

Inactive Publication Date: 2015-12-09
QIQIHAR UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of complex composition and preparation process, slow response speed and low reusability of the existing oxygen indicator, and provides a color-changing indicator for detecting oxygen and its synthesis method, an oxygen sensor and its Preparation

Method used

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  • Color-change indicator used for detecting oxygen, synthesizing method thereof, oxygen sensor and preparation method of oxygen sensor
  • Color-change indicator used for detecting oxygen, synthesizing method thereof, oxygen sensor and preparation method of oxygen sensor
  • Color-change indicator used for detecting oxygen, synthesizing method thereof, oxygen sensor and preparation method of oxygen sensor

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specific Embodiment approach 1

[0022] Embodiment 1: The color-changing indicator for detecting oxygen in this embodiment is N,N'-bis(alkylcarbamoylmethyl)-4,4'-bipyridyl halide and β-cyclodextrin Self-assemble in aqueous solution to form inclusion complexes, denoted as C n Bpyea X 2 mβ-CD; C n Bpyea X 2 mβ-CD formula: C n is a C4-C22 alkyl group, X is a halogen, m is 1-6, and β-CD represents β-cyclodextrin.

specific Embodiment approach 2

[0023] Specific embodiment two: The preparation method of the color-changing indicator for detecting oxygen described in specific embodiment one is carried out according to the following steps: N,N'-bis(alkylcarbamoylmethyl)-4,4' -Bipyridine halide (C n Bpyea X 2 ) and β-cyclodextrin with a molar ratio of 1:(2~6) are dissolved in water, placed in a container, heated until clarified, then cooled and left to stand until the water is completely volatilized, and a color-changing indicator for detecting oxygen is obtained agent. The indicator is inclusion complex C n Bpyea X 2 mβ–CD, is a white solid.

specific Embodiment approach 3

[0024] Specific embodiment 3: The difference between this embodiment and specific embodiment 2 is that in step 2, N,N'-bis(alkylcarbamoylmethyl)-4,4'-bipyridine halide (C n Bpyea X 2 ) and β-cyclodextrin in a molar ratio of 1:(3-5) are dissolved in water; the others are the same as in the second embodiment.

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Abstract

The invention relates to preparation and application of oxygen indicators, and discloses a color-change indicator used for detecting oxygen, a synthesizing method thereof, an oxygen sensor and a preparation method of the oxygen sensor. The purpose is to solve the technical problems that an existing indicator for detecting the oxygen is complex in composition and preparation, response speed is low, and repeated usability is low. The indicator is an inclusion complex which is formed by subjecting N,N'-2 (alkyl carbamoyl methyl)-4,4'-bipyridyl halide and beta-cyclodextrin to self-assembling in a water solution. The preparation method includes the steps that CnBpyeaX2 and beta-cyclodextrin are dissolved in water to be heated to be clarified and then cooled to stand, and after the water is thoroughly evaporated, the indicator is obtained. The inclusion complex is supported on a matrix to be subjected to ultraviolet or natural light irradiation treatment to obtain the oxygen sensor, and the sensor is easy and convenient to prepare and operate, high in response speed, low in cost, good in light stability and capable of being repeatedly used and can be used for detecting oxygen inside air and food package.

Description

technical field [0001] The invention relates to the synthesis of an oxygen color-changing reagent and the preparation and application of its test paper. Background technique [0002] Oxygen is an essential substance to maintain human, animal and plant life, and is also closely related to industrial and agricultural production, environmental testing, food storage and scientific research. Therefore, people need to detect and control the content of oxygen. Commonly used methods for detecting oxygen content include Winkler titration, Clark electrode method, gas chromatography and so on. However, the above methods have some disadvantages to some extent, such as complex instruments, time-consuming detection process, need for expensive instruments, large equipment, high cost, and cannot meet the needs of on-site measurement. The method for detecting oxygen by using an optical oxygen sensor has the advantages of simple use, low cost, little interference, and the like. The Chinese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 郭祥峰佟佳潞贾丽华
Owner QIQIHAR UNIVERSITY
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