功能化的有机荧光复合材料探针的制备及其性能的研究

发布时间：2018-01-01 15:07

本文关键词：功能化的有机荧光复合材料探针的制备及其性能的研究　出处：《兰州大学》2016年硕士论文　论文类型：学位论文

【摘要】：荧光分子探针因其具有响应快捷、灵敏度高、选择性好、检测极限高等特点,正逐渐被应用于环境和生物体系中金属离子的检测。本论文将荧光分子探针嫁接在无机纳米材料上,并把复合荧光探针应用于环境和生物领域中,从而提升了无机纳米材料对环境中金属离子的去除能力,是设计并合成一种能选择性检测和有效去除金属离子的多功能新材料的有效方法。1.通过水合热法和模板法合成出了具有纤维状结构的介孔硅球(KCC-1),并且利用嫁接的方法把预先设计并合成的有机分子前体(RB-Si)与其反应,从而制备出一种多功能的荧光复合材料(RB-KCC-1)。然后,通过各种表征手段分析了RB-KCC-1的结构特征。该荧光复合材料对Hg2+显示较好的选择性,并且还可以裸眼检测。此外,该复合材料还是一种去除水溶液中Hg2+的吸附剂,最大平衡吸附量是115.47 mg g-1。因此,该种荧光复合材料有望被应用于去除水溶液中的Hg2+。2.通过水合热法、溶胶-凝胶法和模板法合成了一种具有核-壳结构的纤维硅复合材料(Fe3O4@SiO2@KCC-1),并将设计合成的喹啉衍生物有机前体(AQ-Si)嫁接在该种无机材料上,从而制备了一种能检测和去除Zn2+的多功能荧光复合材料(AQ-Fe3O4@SiO2@KCC-1).然后,通过各种表征手段分析了AQ-Fe3O4@SiO2@KCC-1的结构特征。实验结果表明,该荧光复合材料对Zn2+显示较好的选择性,而其他相关金属离子不产生明显的影响。此外,由于AQ-Fe3O4@SiO2@KCC-1具有大的比表面积和顺磁性,所以该复合材料可以用来去除水溶液中的Zn2+,并且还可以通过磁铁来回收,最大吸附量是157.24 mg g-1。3.通过共沉淀法和微乳液法合成出了具有核-壳结构的磁性纳米颗粒(Fe3O4@SiO2),并且利用嫁接的方法把荧光分子前体与其反应,从而制备出一种多功能的荧光复合材料(RB-Fe3O4@SiO2).然后,通过各种表征手段分析了RB-Fe3O4@SiO2的结构特征。RB-Fe3O4@SiO2对Hg2+展示较高的选择性和敏感性,并且还可以裸眼检测。此外,RB-Fe3O4@SiO2还是一种去除水溶液中Hg2+的吸附剂,该种复合材料有望被应用于检测和去除水溶液中的Hg2+。
[Abstract]:The fluorescent molecular probe because of its fast response, high sensitivity, good selectivity, high detection limit, detection is being applied to the metal ions in biological and environmental systems. The fluorescent molecular probe grafted on nano inorganic material, and the composite fluorescent probe used in environmental and biological fields, so as to enhance the the inorganic nano material removal of metal ions in the environment,.1. is an effective method to synthesis of selective detection and effective removal of metal ions of new multifunctional material design and the heat of hydration method and template method combined with a mesoporous silica fibre structure (KCC-1), and the use of grafting method the preliminary design and organic synthesis of precursors (RB-Si) and its reaction, thus preparing fluorescent composite multifunctional (RB-KCC-1). Then, characterized by various measurements. RB-KCC-1 The characteristics of structure. The fluorescence of Hg2+ composites showed good selectivity, and can also be naked eye detection. In addition, the composite material is a kind of removal of Hg2+ in aqueous solution of adsorbent, the maximum adsorption capacity is 115.47 mg g-1., therefore, this kind of fluorescent composite material is expected to be used for the removal of Hg2+.2. in aqueous solution through hot hydration method, sol-gel method and template method to synthesize a core-shell structure silicon fiber composites (Fe3O4@SiO2@KCC-1), and the design of organic precursors in the synthesis of quinoline derivatives (AQ-Si) grafted on the inorganic material, thereby producing a multifunctional fluorescent composite material can detect and remove the preparation of Zn2+ (AQ-Fe3O4@SiO2@KCC-1). Then, the analysis of the structural characteristics of AQ-Fe3O4@SiO2@KCC-1 characterized by various means. The experimental results show that the fluorescence of Zn2+ composites showed good selectivity, and other related No apparent effects of metal ions. In addition, because AQ-Fe3O4@SiO2@KCC-1 has large surface area and magnetic properties, the composite material can be used to remove Zn2+ in aqueous solution, and also can be recovered by the magnet, the maximum adsorption capacity is 157.24 mg by g-1.3. method and microemulsion method was synthesized with nuclear magnetic nanoparticles shell structure of the co precipitation (Fe3O4@SiO2), and the use of grafting method to fluorescent molecular precursor and its reaction, thus preparing fluorescent composite multifunctional (RB-Fe3O4@SiO2). Then, through various means of characterization analysis of the structural characteristics of.RB-Fe3O4@SiO2 RB-Fe3O4@SiO2 showed high selectivity and sensitivity to Hg2+, and can also be naked eye detection. In addition, RB-Fe3O4@SiO2 is a kind of Hg2+ removal from aqueous solution as absorbent, the composite material is expected to be applied to the detection and removal in aqueous solution Hg2+.

【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TB33;O657.3

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