掺杂型稀土聚合物一维纳米阵列的荧光性能研究

发布时间：2017-12-28 05:26

本文关键词：掺杂型稀土聚合物一维纳米阵列的荧光性能研究　出处：《青岛大学》2016年硕士论文　论文类型：学位论文

【摘要】：自从碳纳米管被发现以来,一维纳米材料的研究受到了极大地关注。聚合物一维纳米材料作为其一个重要的分支,在最近几年成为纳米科技前沿领域的研究热点。稀土金属是重要的发光基质材料,稀土荧光配合物及其掺杂聚合物后的复合材料已经被广泛的应用于各种领域,将发光配合物引入聚合物基质中以制备成纳米阵列,并对其性质及用途进行研究。本研究中采用溶液共沉淀法成功制备了稀土铕和铽的配合物,通过红外光谱(IR)、紫外吸收光谱(UV)及热重分析(TG)对其结构组成、荧光性能等进行了表征。通过荧光光谱表征表明这两种稀土配合物的发光性能良好。将自制的配合物掺杂于聚甲基丙烯酸甲酯(PMMA)中,用流延法制备出复合膜后用荧光光谱进行表征分析表明复合膜材料与配合物光学性能一致,复合后聚合物的存在没有破坏配合物材料的发光性能。在成功制备了配合物聚合物复合材料以后,又通过模板法成功制备了稀土荧光配合物掺杂聚合物材料纳米阵列。如稀土金属铕或铽配合物与常规分子量的PMMA、聚乙烯咔唑(PVK)聚合物复合生成纳米阵列。扫描电子显微镜(SEM)表征表明:复合材料的纳米阵列规整、直径均一、与所用AAO模板孔径一致;能量色散谱(EDS)就其成份做了分析,表明聚合物纳米阵列含有稀土金属元素;透射电子显微镜(TEM)表明,稀土配合物嵌于纳米线或纳米管之中,团聚现象较轻。荧光测试表明,各种纳米阵列均表现出相应稀土离子的特征光谱,且其荧光强度要明显优于纯配合物和复合块状膜材料;此外,本文还就上述现象的形成机理做了初步探究。
[Abstract]:Since the discovery of carbon nanotubes, the research of one-dimensional nanomaterials has attracted great attention. As an important branch of one dimensional nanomaterials, polymer one-dimensional nanomaterials have become a hot topic in the frontier field of nanotechnology in recent years. Rare earth metals are important luminescent matrix materials. Rare earth fluorescent complexes and polymer doped composites have been widely applied in various fields. Luminescent complexes are introduced into polymer matrix to prepare nano arrays, and their properties and applications are studied. In this study, the complexes of rare earth europium and terbium were successfully prepared by solution coprecipitation. Their structure and fluorescence properties were characterized by infrared spectroscopy (IR), ultraviolet absorption spectroscopy (UV) and thermogravimetric analysis (TG). The fluorescence spectra showed that the luminescence properties of the two rare earth complexes were good. The self-made complexes doped in polymethyl methacrylate (PMMA), were prepared by casting composite membrane after using fluorescence spectroscopy analysis showed that the complexes were characterized with favorable optical properties of composite membrane material, the composite polymer has no damage with luminescence material. After successfully preparing the complex polymer composite, the rare earth fluorescent complex doped polymer nanoarrays have been successfully prepared by the template method. The complexes of rare earth metal europium or terbium complexes are combined with conventional molecular weight PMMA and polythene carbazole (PVK) polymers to produce nanoscale arrays. Scanning electron microscopy (SEM) characterization showed that the composite nano structured array, uniform diameter, and the AAO template aperture consistent; energy dispersive spectroscopy (EDS) is the component to do the analysis, show that the polymer nano array containing rare earth metals; transmission electron microscopy (TEM) showed that the rare earth complexes embedded in nanowires or nanotubes, agglomeration of lighter. Fluorescence measurements showed that all kinds of nano arrays showed the characteristic spectrum of the corresponding rare earth ions, and their fluorescence intensity was obviously better than that of pure complexes and composite bulk materials. In addition, the formation mechanism of the above phenomena was also explored.
【学位授予单位】：青岛大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：O641.4

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