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Composite sensing material of fluorescent conjugated polymer and organic metal complex and application

A conjugated polymer and fluorescent polymer technology, which is applied in the fields of luminescent materials, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of no fluorescence, weak fluorescence, and difficult film formation, and achieves easy high integration and wide application. Foreground effect

Inactive Publication Date: 2010-10-20
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The provided composite sensing material combines the advantages of fluorescent conjugated polymers and organometallic complexes, which can not only overcome the limitations of fluorescent conjugated polymers for detection, but also overcome the difficulty of film formation of organic metal complexes. Disadvantages of weak or no fluorescence

Method used

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  • Composite sensing material of fluorescent conjugated polymer and organic metal complex and application
  • Composite sensing material of fluorescent conjugated polymer and organic metal complex and application
  • Composite sensing material of fluorescent conjugated polymer and organic metal complex and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0037] Embodiment 2 (ammonia sensing), the process is as follows:

[0038] Place a small ball of cotton at the bottom of the quartz pool, drop a few drops of ammonia water on the cotton, put a small ball of cotton on it, and place the composite sensing film prepared in Example 1 on the cotton to test its time response curve. It can be seen that the fluorescence of the composite sensing film decreased slightly in the first 50 seconds, and then the fluorescence gradually increased, and the fluorescence intensity increased by 40% within 300 seconds. The results are shown in figure 1 .

Embodiment 3

[0039] Embodiment 3 (n-propylamine sensing)

[0040] Place a small ball of cotton at the bottom of the quartz pool, drop a few drops of n-propylamine on the cotton, put a small ball of cotton on it, and place the composite sensing film provided by the invention on the cotton to test its time response curve. It can be seen that the fluorescence of the composite sensing film reaches saturation in the first 30 seconds and does not increase thereafter. Fluorescence intensity increases by 25-35% within 30 seconds, see results figure 2 .

Embodiment 4

[0041] Embodiment 4 (aniline sensing)

[0042] Place a small ball of cotton at the bottom of the quartz pool, drop a few drops of aniline on the cotton, put a small ball of cotton on it, and place the composite sensing film on the cotton to test its time response curve. It can be seen that the fluorescence of the composite sensing film reaches saturation in the first 100 seconds and does not increase thereafter. Fluorescence intensity increases by 50-90% within 25-100 seconds, see results image 3 .

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PUM

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Abstract

The invention relates to a composite sensing material consisting of an organic metal complex and a fluorescent conjugated polymer, a preparation method and application. The composite sensing material is characterized by consisting of the fluorescent conjugated polymer and the organic metal complex, wherein the molar ratio of the fluorescent conjugated polymer to the organic metal complex ranges from 1000:1 to 100:1 during physical direct mixing; the fluorescent conjugated polymer serves as a donor, the organic metal complex serves as an acceptor, and charge transfer or energy transfer should be allowed between the two; and the ratio of the fluorescent conjugated polymer to the organic metal complex is 300:1 to 500:1. The composite sensing material can be prepared by using the physical direct mixing or covalent bond connection. The material comprises environmental pollutants, drugs, chemical substances, biological substances and the like, and particularly explosives in the chemical substances, drugs, proteins and nucleic acids in biological substances and the like.

Description

technical field [0001] The invention relates to a composite sensing material constructed by a fluorescent conjugated polymer and an organometallic complex, a production method and an application. Background technique [0002] In the field of sensors, there is a great demand for low-concentration liquid and solid analytes, especially in economic and social fields related to national defense, public safety, and environmental safety. Fluorescence technology is a very sensitive analysis and detection technology. It has the characteristics of: it can detect single molecules (sensitive); it has switching properties; it has the characteristics of sub-nanometer spatial resolution; Moreover, the molecular chain effect of fluorescent conjugated polymers can amplify the fluorescent signal tens to hundreds of times, so it is more sensitive and quickly recognizes the analyte, so fluorescent conjugated polymers are a very sensitive and ideal sensing material. . However, the disadvantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06G01N21/64
Inventor 贺庆国何超付艳艳程建功曹慧敏
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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