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Sensor chip capable of being used for sulfur dioxide detection and preparation method of sensor chip

A sensor chip, sulfur dioxide technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., to achieve the effect of wide application range, good sensitivity, and fast response speed

Inactive Publication Date: 2016-11-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing surface plasmon resonance sensor chip detects sulfur dioxide under normal temperature conditions, and propose a sensor chip that can be used for sulfur dioxide detection and its preparation method

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  • Sensor chip capable of being used for sulfur dioxide detection and preparation method of sensor chip
  • Sensor chip capable of being used for sulfur dioxide detection and preparation method of sensor chip

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Embodiment

[0028] The structure of a sensor that can be used for sulfur dioxide detection of the present invention, such as figure 1 As shown, it includes a glass substrate 1, a metal film 2, a self-assembled film 3, and a polymer film 4. The above-mentioned layers are in the order of glass substrate, metal film, self-assembled film, and guanidine-containing polymer film from bottom to top. Arranged, the guanidine group-containing polymer contains the following repeating structure: -[R]-[X]+-, where R contains a -COO- group, and X contains a guanidine group RHN-C(=NH)-NH 2 The self-assembly liquid of the self-assembled film is one of mercaptoacrylic acid and mercaptan.

[0029] A method for preparing a sensor chip that can be used for sulfur dioxide detection includes the following steps:

[0030] 1) A layer of gold film is deposited on the glass substrate by vacuum evaporation method. The specific evaporation method: select LaSFN9 glass with a refractive index of 1.845 as the substrate, selec...

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Abstract

The invention relates to a sensor chip capable of detecting sulfur dioxide under normal temperature conditions and a preparation method thereof, belonging to the technical field of surface plasmon resonance sensor chip design and preparation. The structure of the sensor chip includes: a glass substrate, a metal film, a self-assembled film, and a guanidine-containing polymer film; the invention synthesizes a new compound monomer by using a guanidine compound and an acrylic compound. After self-assembly modification on the surface of the gold-plated glass substrate, a guanidinium-containing polymer film was prepared on the surface plasmon resonance sensor substrate by thermal polymerization. The sensor can detect sulfur dioxide gas under normal temperature conditions, and has fast detection response speed and high sensitivity; it can be applied to SPR detection, electrochemical detection and QCM detection.

Description

Technical field [0001] The invention relates to a sensor chip capable of detecting sulfur dioxide under normal temperature conditions, and particularly relates to the design and preparation field of surface plasmon resonance (SPR) sensor chips. Background technique [0002] Surface plasmon resonance is an optical phenomenon that is extremely sensitive to changes in the dielectric constant, dielectric thickness, and refractive index of the metal surface. Generally speaking, physical or chemical changes can affect the dielectric constant, thickness, and refractive index of the dielectric on the metal surface. The surface plasmon resonance sensor has the characteristics of real-time, dynamic, high sensitivity, and no need to mark the sample. Therefore, sensors based on surface plasmon resonance technology have been widely used in various fields such as drug development, food safety, and environmental monitoring. However, the application of surface plasmon resonance sensors in gas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/552
CPCG01N21/554
Inventor 韦天新王洋
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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