AAO模板法制备荧光聚合物一维纳米阵列结构的研究

发布时间：2018-04-19 06:27

本文选题：稀土配合物 + 荧光　；参考：《青岛大学》2011年硕士论文

【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-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的复合材料已经广泛的应用于多种领域,若发光配合物被引入聚合物基质中制备成纳米阵列,研究其性质及用途,这将是一个崭新的课题。采用溶液共沉淀法成功制备了稀土铕和铽的三元配合物,通过红外光谱(IR)、紫外吸收光谱(UV)及热重分析(TG)对其组成及结构进行了表征,并对其荧光性能进行了表征,荧光光谱表明两种稀土配合物发光性能良好；将自制的配合物掺杂于聚苯乙烯(PS)、聚甲基丙烯酸甲酯(PMMA)、聚氯乙烯(PVC)溶液中,采用流延法制备了复合膜,热重分析表明聚合物为稀土配合物提供了稳定的化学环境,荧光分析表明复合膜材料与配合物光学性能一致,聚合物的存在没有破坏其发光性能。稀土荧光配合物掺杂聚合物溶液,通过浸润AAO硬模板方法,成功制备了稀土配合物复合聚合物纳米阵列,如稀土金属铕或铽配合物复合常规分子量的PS、PMMA、PVC三种聚合物纳米阵列。扫描电镜(SEM)表明：各种复合纳米阵列规整、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；透射电镜(TEM)表明,稀土配合物嵌于纳米线或纳米管之中,且发生了团聚现象,并对其结构的形成原因做了探讨；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；荧光激发光谱表明,其最大激发峰位发生了蓝移现象。此外,本文还就上述二现象做了初步探究。
[Abstract]:Since the discovery of carbon nanotubes (CNTs), the study of one-dimensional nanomaterials has attracted much attention.Polymer-dimensional nanomaterials as an important branch of nanotechnology in recent years has become a research hotspot in the field of nanotechnology.Rare earth metals are important luminescent matrix materials. Rare earth fluorescent complexes and composites doped with polymer have been widely used in many fields.It will be a new subject to study its nature and use.The ternary complexes of rare earth europium and terbium were prepared by solution coprecipitation method. The composition and structure of ternary complexes were characterized by IR, UV and TGG, and their fluorescence properties were characterized.The fluorescence spectra showed that the luminescent properties of the two rare earth complexes were good, and the composite membranes were prepared by flow casting method by doping the self-made complexes into the solutions of polystyrene (PS), polymethyl methacrylate (PMMA) and polyvinyl chloride (PVC).The thermogravimetric analysis shows that the polymer provides a stable chemical environment for the rare earth complexes. Fluorescence analysis shows that the optical properties of the composite films are consistent with those of the complexes, and the existence of the polymers does not destroy their luminescence properties.Rare earth complex polymer nanoarrays were successfully prepared by infiltrating AAO hard template with rare earth fluorescent complexes doped in polymer solution, such as rare earth metal europium or terbium complexes with conventional molecular weight PSN PMMA / PVC nanoarrays.Scanning electron microscopy (SEM) showed that all kinds of composite nanoarrays were uniform in diameter and the pore size was the same as the AAO template used. The composition of the composite nanoarrays was analyzed by energy dispersive spectroscopy (EDS), which showed that the polymer nanoarrays contained rare earth metal elements.The rare earth complexes are embedded in nanowires or nanotubes, and agglomeration occurs, and the formation of their structures is discussed. Fluorescence measurements show that all kinds of nanoarrays exhibit the characteristic spectra of rare earth ions.The fluorescence intensity is obviously superior to that of pure complexes and composite bulk films, and the fluorescence excitation spectra show that the maximum excitation peak has a blue shift phenomenon.In addition, this paper also makes a preliminary study on the above two phenomena.
【学位授予单位】：青岛大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TB383.1

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