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Method for preparing oxygen sensitive film of dissolved oxygen sensor by loading fluorescent indicator and application of oxygen sensitive film

A dissolved oxygen sensor and fluorescent indicator technology, which is applied in the direction of fluorescence/phosphorescence, instruments, scientific instruments, etc., can solve the problems of weak interaction between fluorescent indicators and substrates, loss of fluorescent indicators, slow response speed, etc., and achieve relief Loss of fluorescent indicator, improved mechanical strength, reduced impact and damage

Pending Publication Date: 2021-11-05
常州罗盘星检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the common weakness of dissolved oxygen sensitive membranes prepared in the prior art is that the response speed is slow, and the interaction between the fluorescent indicator and the substrate is weak. During use, due to various reasons, such as solvent, temperature, solution, pH and other factors, Lose the fluorescent indicator

Method used

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  • Method for preparing oxygen sensitive film of dissolved oxygen sensor by loading fluorescent indicator and application of oxygen sensitive film
  • Method for preparing oxygen sensitive film of dissolved oxygen sensor by loading fluorescent indicator and application of oxygen sensitive film
  • Method for preparing oxygen sensitive film of dissolved oxygen sensor by loading fluorescent indicator and application of oxygen sensitive film

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Effect test

Embodiment 1

[0042] S1: Activation treatment of the transparent support layer 4: use a rotary low-temperature plasma surface treatment machine to activate the transparent support layer 4;

[0043] S2: the preparation of fluorescent layer 3: platinum (II) MESO-tetrakis (pentafluorobenzene) porphine and nano-alumina content ratio 1%, nano-alumina content 5% in fluorescent layer 3, nano-alumina and platinum ( Ⅱ) MESO-tetrakis(pentafluorobenzene) porphine, polydimethylsiloxane and n-hexane were mixed and ultrasonically treated for 30 minutes, then stirred for 12 hours to obtain the fluorescent layer slurry, and then the fluorescent layer slurry was coated with a spin coater Uniform coating on the transparent support layer 4 of S1 with a coating thickness of 50 μm to form a fluorescent layer 3;

[0044] S3: Preparation of the refraction layer 2: the content of nano-boron nitride in the refraction layer 2 is 5%, and the nano-boron nitride, polydimethylsiloxane and n-hexane are mixed and ultrason...

Embodiment 2

[0047] S1: Activation treatment of the transparent support layer 4: use a rotary low-temperature plasma surface treatment machine to activate the transparent support layer 4;

[0048] S2: the preparation of fluorescent layer 3: platinum (II) MESO-tetrakis (pentafluorobenzene) porphine and nano-alumina content ratio 3%, nano-alumina content 3% in fluorescent layer 3, nano-alumina and platinum ( Ⅱ) MESO-tetrakis(pentafluorobenzene)porphine, polydimethylsiloxane and n-heptane were mixed and ultrasonically treated for 30 minutes, then stirred for 12 hours to obtain a fluorescent layer slurry, and then the fluorescent layer slurry was coated with a spin coater Coating evenly on the transparent support layer 4 of S1 with a coating thickness of 60 μm to form a fluorescent layer 3;

[0049] S3: Preparation of refraction layer 2: the content of nano-boron nitride in refraction layer 2 is 7%, nano-boron nitride, polydimethylsiloxane and n-heptane are mixed, ultrasonically treated for 30...

Embodiment 3

[0052] S1: Activation treatment of the transparent support layer 4: use a rotary low-temperature plasma surface treatment machine to activate the transparent support layer 4;

[0053] S2: the preparation of fluorescent layer 3: platinum (II) MESO-tetrakis (pentafluorobenzene) porphin and nano-alumina content ratio 5%, nano-alumina content 6% in fluorescent layer 3, nano-alumina and platinum ( Ⅱ) MESO-tetrakis(pentafluorobenzene) porphine, polydimethylsiloxane and cyclohexane were mixed and ultrasonically treated for 30 minutes, then stirred for 12 hours to obtain a fluorescent layer slurry, and then the fluorescent layer slurry was coated with a spin coater Coating evenly on the transparent support layer 4 of S1 with a coating thickness of 15 μm to form a fluorescent layer 3;

[0054] S3: Preparation of the refraction layer 2: the content of nano-boron nitride in the refraction layer 2 is 10%, the nano-boron nitride, polydimethylsiloxane and cyclohexane are mixed, ultrasonical...

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Abstract

The invention discloses a method for preparing an oxygen-sensitive film of a dissolved oxygen sensor by loading a fluorescent indicator and application of the oxygen-sensitive film of the dissolved oxygen sensor. The method comprises the following steps of activating a transparent support layer, preparing a fluorescent layer, preparing a refraction layer and preparing a shading protective layer, during preparation of the fluorescent layer, in the mixing process of the fluorescent indicator and the nano material, the fluorescent indicator can be adsorbed and wrapped in the high-transmittance and high-refractive-index nano material, the stable fluorescent layer is formed by fixing polydimethylsiloxane on the transparent supporting layer, and the refraction layer is introduced to the fluorescent layer, so measuring light of the sensor can be in full contact with the fluorescent material; a shading protection layer is deposited on the refraction layer, and the nano material capable of improving the mechanical strength of the oxygen sensitive film is used in the shading protection layer, so impact and damage of the oxygen sensitive film in the use process are reduced, and the service life of the oxygen sensitive film of the dissolved oxygen sensor prepared by loading the fluorescent indicator is prolonged.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a method and application for preparing an oxygen sensitive film of a dissolved oxygen sensor loaded with a fluorescent indicator. Background technique [0002] Dissolved oxygen is one of the comprehensive indicators for evaluating water quality and one of the important indicators for the degree of organic pollution in water bodies. Many countries have used the combination of electrochemical and electronic science to carry out research on dissolved oxygen detection and sensing technology. Various methods and instruments for measuring dissolved oxygen have been derived. [0003] Most of the commercially available products are based on the polarographic dissolved oxygen electrode to measure the diffusion current method, but the online oxygen electrode is used, the electrode is always energized (even when it is turned off), the electrode wears a lot, and it needs to ...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/643G01N2021/6432
Inventor 魏伟刘瑞杰张旭
Owner 常州罗盘星检测科技有限公司
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