A kind of optical metal-based modified gel and its preparation method and application
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A metal-based, modified technology, used in gel preparation, chemical instruments and methods, nano-optics, etc., can solve problems such as environmental and water pollution, complex synthesis process, human health hazards, etc., and achieve good biocompatibility, Simple preparation method and high photoelectric efficiency
Active Publication Date: 2022-03-15
SOUTHEAST UNIV
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[0002] Due to the unique advantages of low background signal, high sensitivity and fast response, electrochemiluminescence (ECL) has become a superior analytical method for trace target detection of biomolecules, clinical diagnosis, environmental and food monitoring etc., common ECL active materials include quantum dots, luminol and bipyridyl ruthenium (Ru(bpy) 3 2+ ) and its derivatives, among them, Ru(bpy) 3 2+ Because of its high luminous efficiency, reversible electrochemical behavior and good chemical stability, it has become the most commonly used ECL emitter, but the high cost makes Ru(bpy) 3 2+ Wide application is limited
[0003] Metal-organic gel (MOG), as a soft material of intelligent coordination polymer, has been reported directly because of its porous structure, large specific surface area, excellent mechanical and chemical stability, and simple and gentle preparation method. MOG is used as a luminescent body in the construction of ECL sensors, but it mostly uses pyridine derivatives and trimesic acid as organic ligands, which will not only cause environmental and water pollution but also cause serious harm to human health. The treatment process not only requires the participation of a variety of organic compounds, but also faces the shortcomings of complex synthesis process, high technical requirements and long time consumption. For this reason, the present invention proposes an optical metal-based modified gel and its preparation method and application
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[0033] refer to Figure 1-5 , a preparation method of optical metal-based modified gel, comprising the following steps:
[0034] Add the salt solution containing metal X ions into the CNS solution whose temperature is programmed to rise to 10-100°C at a rate of 1°C / min-15°C / min and stir at constant temperature for 5-80s, then quickly remove from the heat source (within about 2s), and place The obtained product was naturally cooled to room temperature under dark conditions and preserved.
[0035] The X includes alkali metals (such as Na, K, etc.), alkaline earth metals (such as Be, Mg, Ca, etc.), transition metals (such as Fe, Zr, Co, Cu, Zn, Ti, etc.) and other metals ( For example, one or more metals in Al, Pb, etc.), the valence state can be +1 (for example, Na + 、K + etc.), +2 valence (for example, Mg 2+ 、Cu 2+ , Ca 2+ etc.), +3 valence (for example, Al 3+ , Fe 3+ etc.), +4 valence (for example, Zr 4+ 、Ti 4+ Wait);
[0036] The salt solution containing metal X io...
Embodiment 1
[0043] g-C 3 N 4 Synthesis of: For example, g-C can be synthesized by thermal polymerization 3 N 4 . For example, put 5.0g of white melamine powder into a covered ceramic crucible, heat it in a muffle furnace at 550°C for 4h at a rate of 5°C / min, cool it down to room temperature naturally, and use an agate mortar yellow block g-C 3 N 4 Grind into powder for further use.
Embodiment 2
[0045] Synthesis of CNS: For example, g-C can be 3 N 4 The powder (100mg) was dispersed in 100mL ultrapure water for 12h, then centrifuged and dried to obtain CNS.
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Abstract
The present invention relates to the field of photoelectric material manufacturing, especially an optical metal-based modified gel and its preparation method and application. The following scheme is proposed. The preparation method includes adding a salt solution containing metal X ions to the CNS after the temperature has been programmed Stirring at constant temperature in the solution, CNS is synthesized by the following steps: the steps include first g-C 3 N 4 The powder is dispersed in water for ultrasonic peeling, and then centrifuged and dried to obtain CNS, the g-C 3 N 4 is synthesized through the following steps: the steps include selecting a compound containing a triazine structure as a reaction precursor, and calcining to obtain g-C 3 N 4 . The method proposed by the present invention and the optical metal-based modified gel prepared according to the method have high ECL strength, low cost, high photoelectric efficiency, good stability, large specific surface area, and fast electron transfer rate, which are used in optoelectronic devices. , labeling materials, molecular sensing and biomedical fields have broad application prospects.
Description
technical field [0001] The invention relates to the field of optoelectronic material manufacturing, in particular to an optical metal-based modified gel and its preparation method and application. Background technique [0002] Due to the unique advantages of low background signal, high sensitivity and fast response, electrochemiluminescence (ECL) has become a superior analytical method for trace target detection of biomolecules, clinical diagnosis, environmental and food monitoring etc., common ECL active materials include quantum dots, luminol and bipyridyl ruthenium (Ru(bpy) 3 2+ ) and its derivatives, among them, Ru(bpy) 3 2+ Because of its high luminous efficiency, reversible electrochemical behavior and good chemical stability, it has become the most commonly used ECL emitter, but the high cost makes Ru(bpy) 3 2+ wide application is limited. [0003] Metal-organic gel (MOG), as a soft material of intelligent coordination polymer, has been reported directly because...
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