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Fluorescent chemical sensor as well as preparation method and application thereof

A chemical sensor and fluorescence technology, applied in the field of sensing, can solve the problems of shedding of fluorescent indicators, less photochemical sensors, and inability to use sensing films, and achieve the effect of solving the sensitivity of fluorescence response

Inactive Publication Date: 2015-01-28
BOE TECH GRP CO LTD
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Problems solved by technology

[0003] However, currently, there are few photochemical sensors for the determination of water content in organic solvents.
Kiyomi Takato, Norihiko Gokan, Masao Kaneko (Effect of humidity on photoluminescence from Ru(bpy) 3 2+ incorporated into a polysaccharide solid film and its application tooptical humidity sensor[J].Journal of Photochemistry and PhotobiologyA:Chemistry 169(2005)109–114) describes an optical sensor for testing air humidity, but the sensing film described It cannot be used to measure the water content in organic solvents, because the fluorescent indicator used is easily soluble in water and other solvents, and the fluorescent indicator will fall off when measuring the water content

Method used

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  • Fluorescent chemical sensor as well as preparation method and application thereof
  • Fluorescent chemical sensor as well as preparation method and application thereof
  • Fluorescent chemical sensor as well as preparation method and application thereof

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Embodiment Construction

[0034] The invention aims to provide a fluorescent chemical sensor for detecting water content in organic solvents based on ruthenium complexes.

[0035] The fluorescent chemical sensor for detecting water content in organic solvents provided by the present invention uses a ruthenium complex sensitive to water content as a fluorescent sensing indicator, and the fluorescent sensing indicator is dispersed in a matrix; wherein the matrix is ​​silicon dioxide An organic-inorganic composite film formed by hybridization with polyurethane.

[0036] The method for preparing the fluorescent chemical sensor provided by the present invention comprises the following steps:

[0037] 1) Dissolving the ruthenium complex in water to prepare the ruthenium complex solution;

[0038] 2) Dissolving ethyl orthosilicate in a mixture of absolute ethanol and water, and then heating in a water bath at 45°C to 55°C under the condition of formic acid as a catalyst, to prepare a prehydrolysis solution o...

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Abstract

The invention relates to a fluorescent chemical sensor and a preparation method and application thereof. The fluorescent chemical sensor adopts a ruthenium complex as a fluorescent sensing indicator, wherein the ruthenium complex is sensitive to water content; and the fluorescent sensing indicator is dispersed into a substrate, wherein the substrate is an organic-inorganic composite film formed by hybridizing silica and polyurethane. The fluorescent chemical sensor can be used for probing the water content in the organic solvent.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to a fluorescent chemical sensor and its preparation method and application. Background technique [0002] Most of the cleaning solvents used for cleaning objects are organic solvents. However, the water content in the organic solvent often affects the life of the object to be cleaned and participates in the chemical reaction inside the object to be cleaned. Therefore, the determination of water content in organic solvents is one of the most important and most frequently encountered problems. [0003] But at present, there are few photochemical sensors for the determination of water content in organic solvents. Kiyomi Takato, Norihiko Gokan, Masao Kaneko (Effect of humidity on photoluminescence from Ru(bpy) 3 2+ incorporated into a polysaccharide solid film and its application tooptical humidity sensor[J].Journal of Photochemistry and PhotobiologyA:Chemistry 169(2005)109–114) d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C08L75/04C08K3/36C08K5/3432
Inventor 李晓虎
Owner BOE TECH GRP CO LTD
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