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Compound material constructed by molecular engram and fluorescent conjugated polymer, preparation and application
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A technology of conjugated polymers and molecular imprinting, which is applied in the direction of material inspection products, fluorescence/phosphorescence, material excitation analysis, etc., and can solve the problems of unsuitable for on-site, fast, sensitive and highly selective detection, slow response, etc.
Active Publication Date: 2013-06-26
浙江同创海诚科技有限公司
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The biggest advantage of molecularly imprinted polymers is its high selectivity, but its disadvantage is that the response is slow, usually the response time is more than 15 minutes, therefore, it is not suitable for the needs of on-site, rapid, sensitive and highly selective detection
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Embodiment 1
[0033] Embodiment 1 synthesis process is as follows:
[0034] Side chain (12 carbons) TNT-sensitive fluorescent conjugated polymer containing molecularly imprinted active monomer 1mmol (see Figure 4 for the structure), acrylamide (1mmol), di(methacrylate)-ethylene glycol ester (4mmol) , explosive template molecule (containing Octogen, RDX, nitroglycerin, the ratio of the three is 1:1:1, 0.018mmol in total), add 0.012mmol of benzoyl peroxide, dissolve in 5mL of toluene, and heat to React at 60-70°C for 6 hours. The resulting polymer was precipitated, centrifuged, and the polymer was washed successively with toluene and ethanol. Soxhlet extractor extracts and removes template molecules to obtain a light yellow composite polymer with a yield of 85%.
Embodiment 2
[0035] Embodiment 2 (change crosslinking monomer), synthetic process is as follows:
[0036] Double side chain (12 carbons) TNT-sensitive fluorescent conjugated polymer containing molecularly imprinted active monomer 1mmol (see Figure 4 for the structure), acrylic acid (1mmol), di(methacrylic acid)-ethylene glycol ester (4mmol) , explosive template molecule (containing Octogen, RDX, nitroglycerin, the ratio of the three is 1:1:1, 0.018mmol in total), add 0.012mmol of benzoyl peroxide, dissolve in 5mL of toluene, and heat to React at 60-70°C for 6 hours. The resulting polymer was precipitated, centrifuged, and the polymer was washed successively with toluene and ethanol. Soxhlet extractor extracts and removes template molecules to obtain a light yellow composite polymer with a yield of 87%.
Embodiment 3
[0037] Embodiment 3 (carbon chain length changes)
[0038] Double side chain (6 carbons) TNT-sensitive fluorescent conjugated polymer containing molecularly imprinted active monomer 1mmol (see Figure 4 for structure), acrylamide (1mmol), di(methacrylic acid)-ethylene glycol ester (4mmol ), explosive template molecules (containing Octogen, RDX, and nitroglycerin, the ratio of which is 1:1:1, 0.018mmol in total), add 0.012mmol of benzoyl peroxide, dissolve in 5mL of toluene, and heat Reaction at 60-70°C for 6 hours. The resulting polymer was precipitated, centrifuged, and the polymer was washed successively with toluene and ethanol. Soxhlet extractor extracts and removes template molecules to obtain a light yellow composite polymer with a yield of 90%. The product is less soluble in common solvents such as DMF and DMSO. Not suitable for further device preparation.
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Abstract
The invention relates to a composite material constructed by a molecular engram polymer and a fluorescence conjugated polymer and preparation and application thereof. The invention is characterized in the composite material consists of the fluorescence conjugated polymer, a connection unit and the molecular engram polymer, wherein the connection unit is used for the covalent connection between the side bond of the fluorescence conjugated polymer and the molecular engram polymer, meanwhile, the connection unit and the molecular engram polymer are in the covalent connection. The preparation process comprises the following steps: a functional monomer which can form the molecular engram polymer is introduced to the side chain of the fluorescence conjugated polymer through the covalent bond; and by taking various biological or / and chemical matter molecules as a template and adding a cross linking agent and an initiator, the polymerization reaction is initiated under the condition of heating or illumination, and a template molecule is removed by extraction, and the molecular engram- fluorescence conjugated polymer composite material which can detect various biological and chemical matter molecules simultaneously is obtained. The composite material can be used as a sensing material which can detect various biological and chemical matters simultaneously.
Description
technical field [0001] The present invention relates to a kind of composite material constructed by fluorescence and molecularly imprinted polymer, its preparation and application. As a sensing material, the composite material constructed by this kind of polymer not only has the characteristics of sensitivity, speed, convenience and high integration of light-emitting polymer ; At the same time, it has the characteristics of high selectivity of molecularly imprinted polymers, which can make up for the shortcomings of each other in terms of structure and properties, forming a class of sensor materials that can simultaneously detect a variety of biological and chemical substances. At the same time, the present invention provides a method for identifying the analytes through the detection of luminescent properties, and the types of the analytes include chemical substances and biological substances. Especially explosives in chemical substances, proteins, nucleic acids in drugs and ...
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