【摘要】：自從聚集誘導(dǎo)發(fā)光(AIE)現(xiàn)象被提出以來,其有趣的性質(zhì)迅速成為了固態(tài)有機(jī)熒光材料的研究熱點(diǎn)。水滑石(LDHs)作為實(shí)驗(yàn)室中常用的陰離子交換劑,其特殊的層狀結(jié)構(gòu)引起了人們極大的研究興趣。本文設(shè)計(jì)了以鎂鋁水滑石為主體,酚醛樹脂和具有AIE現(xiàn)象的有機(jī)熒光分子(CTPVBP、H4ETTC)為客體合成了有機(jī)無機(jī)復(fù)合材料。以此來研究了CTPVBP-MgAlLDHs、H4ETTC-MgAlLDHs的各種光學(xué)性質(zhì)以及通過酚醛樹脂-水滑石來制備石墨烯,具體內(nèi)容如下:(1)以MgCl2·6H2O和AlCl3·6H2O分別為鎂源和鋁源,摩爾比為3:1,在堿性環(huán)境下通過水熱法合成了鎂鋁水滑石,將其除水后與有機(jī)熒光分子(CTPVBP)溶液通過離子交換制備CTPVBP-MgAlLDHs。我們研究了CTPVBP-MgAlLDHs在不同反應(yīng)時間以及不同離心次數(shù)下的紫外以及熒光圖并與CTPVBP聚集狀態(tài)下的紫外以及熒光圖進(jìn)行對比,發(fā)現(xiàn)其光學(xué)性質(zhì)不同于AIE現(xiàn)象,通過研究機(jī)理首次提出了空間限域誘導(dǎo)發(fā)光現(xiàn)象(SCIE)。并用XRD、TEM等儀器對產(chǎn)品的晶型、組成和形貌進(jìn)行了分析。(2)我們制備了H4ETTC-MgAlLDHs并詳細(xì)討論了在不同反應(yīng)時間、不同離心次數(shù)下對其紫外以及熒光圖譜的影響,通過對比H4ETTC聚集狀態(tài)下的紫外和熒光圖譜,驗(yàn)證了空間限域誘導(dǎo)發(fā)光現(xiàn)象(SCIE)。XRD、TEM等儀器用來對產(chǎn)品的晶型、組成和形貌進(jìn)行表征。(3)我們合成了酚醛樹脂低聚物并組裝成為酚醛樹脂-鎂鋁水滑石,再加熱形成酚醛樹脂高聚物,高溫碳化,碳化后在CTAB表面活性劑的保護(hù)下用鹽酸使得鎂鋁水滑石溶解得到了石墨烯納米片。對比研究了酚醛樹脂低聚物-LDHs、酚醛樹脂高聚物-LDHs、酚醛樹脂低聚物紫外圖,并對得到的石墨烯用XRD、拉曼等儀器進(jìn)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.
【學(xué)位授予單位】：杭州師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB332;O613.71

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本文編號：2128604