多苯环结构有机阴离子镁铝水滑石的插层组装研究
发布时间：2018-07-17 02:26
【摘要】：自从聚集诱导发光(AIE)现象被提出以来,其有趣的性质迅速成为了固态有机荧光材料的研究热点。水滑石(LDHs)作为实验室中常用的阴离子交换剂,其特殊的层状结构引起了人们极大的研究兴趣。本文设计了以镁铝水滑石为主体,酚醛树脂和具有AIE现象的有机荧光分子(CTPVBP、H4ETTC)为客体合成了有机无机复合材料。以此来研究了CTPVBP-MgAlLDHs、H4ETTC-MgAlLDHs的各种光学性质以及通过酚醛树脂-水滑石来制备石墨烯,具体内容如下:(1)以MgCl2·6H2O和AlCl3·6H2O分别为镁源和铝源,摩尔比为3:1,在碱性环境下通过水热法合成了镁铝水滑石,将其除水后与有机荧光分子(CTPVBP)溶液通过离子交换制备CTPVBP-MgAlLDHs。我们研究了CTPVBP-MgAlLDHs在不同反应时间以及不同离心次数下的紫外以及荧光图并与CTPVBP聚集状态下的紫外以及荧光图进行对比,发现其光学性质不同于AIE现象,通过研究机理首次提出了空间限域诱导发光现象(SCIE)。并用XRD、TEM等仪器对产品的晶型、组成和形貌进行了分析。(2)我们制备了H4ETTC-MgAlLDHs并详细讨论了在不同反应时间、不同离心次数下对其紫外以及荧光图谱的影响,通过对比H4ETTC聚集状态下的紫外和荧光图谱,验证了空间限域诱导发光现象(SCIE)。XRD、TEM等仪器用来对产品的晶型、组成和形貌进行表征。(3)我们合成了酚醛树脂低聚物并组装成为酚醛树脂-镁铝水滑石,再加热形成酚醛树脂高聚物,高温碳化,碳化后在CTAB表面活性剂的保护下用盐酸使得镁铝水滑石溶解得到了石墨烯纳米片。对比研究了酚醛树脂低聚物-LDHs、酚醛树脂高聚物-LDHs、酚醛树脂低聚物紫外图,并对得到的石墨烯用XRD、拉曼等仪器进行了表征。
[Abstract]:Since the phenomenon of agglomeration induced luminescence (AIE) has been proposed, the interesting properties of AIE have rapidly become the focus of solid-state organic fluorescent materials. Hydrotalcite (LDHs), as a common anion exchanger in laboratory, has attracted much attention because of its special layered structure. In this paper, organic-inorganic composites were synthesized by using magnesium-aluminum hydrotalcite as main body, phenolic resin and organic fluorescent molecule with AIE phenomenon (CTPVBPNH4ETTC) as the guest. The optical properties of CTPVBP-MgAlLDHsN H4ETTC-MgAlLDHs and the preparation of graphene by phenolic resin-hydrotalcite were studied. The main contents are as follows: (1) MgCl _ 2 路6H _ 2O and ALCL _ 3 路6H _ 2O were used as magnesium and aluminium sources, respectively. Mg-Al hydrotalcite was synthesized by hydrothermal method in alkaline environment at a molar ratio of 3: 1. After removing water, it was prepared by ion exchange with organic fluorescent molecule (CTPVBP) solution to prepare CTPVBP-MgAlLDHs. The UV and fluorescence spectra of CTPVBP-MgAlLDHs at different reaction times and different centrifugation times were studied and compared with those of CTPVBP aggregation state. It was found that the optical properties of CTPVBP-MgAlLDHs were different from those of AIE. The spatial limited domain induced luminescence (sci) was proposed for the first time through the study of the mechanism. The crystal structure, composition and morphology of H4ETTC-MgAlLDHs were analyzed by means of XRDT-TEM. (2) We prepared H4ETTC-MgAlLDHs and discussed in detail the effects of different reaction time and different centrifugal times on UV spectra and fluorescence spectra of H4ETTC-MgAlLDHs. By comparing the UV and fluorescence spectra of H4ETTC aggregation state, it was verified that the spatial limited region induced luminescence (SCIE). XRDX TEM and other instruments were used to analyze the crystal form of the product. The composition and morphology of phenolic resin were characterized. (3) the phenolic resin oligomers were synthesized and assembled into phenolic resins-magnesium aluminum hydrotalcite, then heated to form phenolic resin polymers, which were carbonized at high temperature. After carbonization, graphene nanoparticles were obtained by dissolution of magnesium aluminum hydrotalcite with hydrochloric acid under the protection of CTAB surfactant. The UV diagrams of phenolic resin oligomer-LDHs, phenolic resin polymer-LDHs and phenolic resin oligomer were studied. The obtained graphene was characterized by XRD, Raman and other instruments.
【学位授予单位】：杭州师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332;O613.71
本文编号：2128604
[Abstract]:Since the phenomenon of agglomeration induced luminescence (AIE) has been proposed, the interesting properties of AIE have rapidly become the focus of solid-state organic fluorescent materials. Hydrotalcite (LDHs), as a common anion exchanger in laboratory, has attracted much attention because of its special layered structure. In this paper, organic-inorganic composites were synthesized by using magnesium-aluminum hydrotalcite as main body, phenolic resin and organic fluorescent molecule with AIE phenomenon (CTPVBPNH4ETTC) as the guest. The optical properties of CTPVBP-MgAlLDHsN H4ETTC-MgAlLDHs and the preparation of graphene by phenolic resin-hydrotalcite were studied. The main contents are as follows: (1) MgCl _ 2 路6H _ 2O and ALCL _ 3 路6H _ 2O were used as magnesium and aluminium sources, respectively. Mg-Al hydrotalcite was synthesized by hydrothermal method in alkaline environment at a molar ratio of 3: 1. After removing water, it was prepared by ion exchange with organic fluorescent molecule (CTPVBP) solution to prepare CTPVBP-MgAlLDHs. The UV and fluorescence spectra of CTPVBP-MgAlLDHs at different reaction times and different centrifugation times were studied and compared with those of CTPVBP aggregation state. It was found that the optical properties of CTPVBP-MgAlLDHs were different from those of AIE. The spatial limited domain induced luminescence (sci) was proposed for the first time through the study of the mechanism. The crystal structure, composition and morphology of H4ETTC-MgAlLDHs were analyzed by means of XRDT-TEM. (2) We prepared H4ETTC-MgAlLDHs and discussed in detail the effects of different reaction time and different centrifugal times on UV spectra and fluorescence spectra of H4ETTC-MgAlLDHs. By comparing the UV and fluorescence spectra of H4ETTC aggregation state, it was verified that the spatial limited region induced luminescence (SCIE). XRDX TEM and other instruments were used to analyze the crystal form of the product. The composition and morphology of phenolic resin were characterized. (3) the phenolic resin oligomers were synthesized and assembled into phenolic resins-magnesium aluminum hydrotalcite, then heated to form phenolic resin polymers, which were carbonized at high temperature. After carbonization, graphene nanoparticles were obtained by dissolution of magnesium aluminum hydrotalcite with hydrochloric acid under the protection of CTAB surfactant. The UV diagrams of phenolic resin oligomer-LDHs, phenolic resin polymer-LDHs and phenolic resin oligomer were studied. The obtained graphene was characterized by XRD, Raman and other instruments.
【学位授予单位】：杭州师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332;O613.71
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，本文编号：2128604
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