Single-layer fluorescent conjugated polymer membrane and preparation method thereof

A technology of conjugated polymers and polymers, which is applied in the field of single-layer fluorescent conjugated polymer membranes and its preparation, can solve the problems of reducing the density of matrix surface modification and affecting the fluorescence intensity of SAM membrane materials, and achieve analytical sensitivity and selectivity Improve and eliminate terrorist threats and ensure the effect of modification density

Active Publication Date: 2014-03-12
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

However, with the increase of conjugated polymers, their modification density on the substrate surface will decrease, which will affect the fluorescence intensity of SAM membrane materials.

Method used

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  • Single-layer fluorescent conjugated polymer membrane and preparation method thereof
  • Single-layer fluorescent conjugated polymer membrane and preparation method thereof
  • Single-layer fluorescent conjugated polymer membrane and preparation method thereof

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Embodiment

[0038] A method for preparing a single-layer fluorescent conjugated polymer film with a sensing function for aromatic hydrocarbon explosives, the steps are as follows:

[0039] Step 1: Preparation of matrix material: The purpose of this step is to modify the azide functional group on the surface of the matrix material, and at the same time modify amino groups, reactive groups and neutral groups.

[0040] Cut the silicon wafer into 2.5×1.3cm size, ultrasonically wash it with acetone, methanol and water for 15 minutes, then wash it with 5% HF acid solution for 5 minutes, wash it several times with ultrapure water, and then wash it with piranha solution (7 / 3,v / v,30%H 2 o 2 / 98%H 2 SO 4 , Note: Piranha solution will react violently with organic matter and must be used with care) for 30 minutes. After washing with a large amount of water, dry at 100°C for 1 h. Place the activated silicon chip in a 25mL round bottom flask, add 10mL toluene and 100mM 3-chloropropylsilane. Unde...

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Abstract

The invention discloses a single-layer fluorescent conjugated polymer membrane and a preparation method thereof. Long-chain aliphatic groups are introduced in carbon-9 and carbon-9' of fluorene; long-chain alkoxy groups are introduced in carbon-2 and carbon-5 of 1, 4-paradiiodobenzene; the two monomers are copolymerized to form a polymer; meanwhile, the polymer is immobilized on the surface of a substrate material to form a single-layer fluorescent conjugated polymer membrane material. The single-layer fluorescent conjugated polymer membrane material has excellent detection sensitivity to 1, 3, 5-trinitrotoluene, 2, 4-dinitrotoluene and 1, 3, 5-trinitrophenol.

Description

technical field [0001] The invention relates to a single-layer fluorescent conjugated polymer film and a preparation method thereof. The single-layer fluorescent conjugated polymer film is mainly used for detecting aromatic hydrocarbon explosives and has a sensing function for aromatic hydrocarbon explosives. Background technique [0002] The detection of aromatic explosives such as 2,4-dinitrotoluene (DNT), 1,3,5-trinitrotoluene (TNT) and 1,3,5-trinitrophenol (PA) is important for homeland security , military operations and environmental detection are of great significance. The most ideal way to detect trace explosives is to detect its vapor, which is also the main detection method of current commercial explosive detection devices. A variety of methods have been used for the detection of aromatic hydrocarbon explosives, such as colorimetry, surface-enhanced Raman spectroscopy, ion mobility chromatography, and fluorescent quantum dots. These methods exhibit good detection ...

Claims

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Application Information

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IPC IPC(8): C03C17/30C08G61/02
Inventor 赵川德王晓川王红梅王蔺罗毅威刘晓峰姜燕
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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