發(fā)光巰基配合物的制備及其在金屬離子檢測中的應用
發(fā)布時間：2018-07-25 18:10
【摘要】：熒光材料因其自身所具有的特殊發(fā)光性能,多年來一直被科研工作者們所關(guān)注與研究。同時熒光材料在熒光分子探針、生物成像、光電響應、發(fā)光二極管(LED)和太陽能電池等多個領域都有著廣泛的應用。本文在調(diào)研了大量的國內(nèi)外之前發(fā)表工作的基礎上,采用了燃燒法、溶劑熱法和攪拌法這三種方法合成了三組不同的熒光材料,研究探討了它們的性質(zhì)及其應用。主要內(nèi)容包括以下三個方面:(1)熒光碳納米顆粒(Au-C NPs)的合成及其對Fe3+和Hg2+的檢測采用直接燃燒的方式處理氯金酸(HAuCl4)和谷胱甘肽(GSH)的混合物,制備出了具有熒光性質(zhì)的碳納米顆粒(Au-CNPs)。通過使用X-射線衍射儀(XRD),X-射線光電子能譜儀(XPS),透射電子顯微鏡(TEM)和紅外光譜儀(IR)等手段對碳納米顆粒進行了物相、形貌等表征。測試結(jié)果表明了 Au被包裹在碳顆粒的里層,整個顆粒的表面被大量的有機基團修飾。探究Au-CNPs對金屬離子的響應性質(zhì),一共選擇了 13種待檢測的金屬離子,測試結(jié)果發(fā)現(xiàn)Au-CNPs對Fe3+和Hg2+這兩種離子都能夠特殊識別。當Fe3+的濃度在1.0*10-5到2.0*10-3 M和Hg2+的濃度在5.0*10-5到3.0*10-2M的范圍時,Au-CNPs的熒光強度分別與兩種離子濃度都具有很好的線性相關(guān)性。除此之外,我們也探究了在實際水樣中Au-CNPs對Fe3+和Hg2+的響應情況,結(jié)果表明了 Au-C NPs在實際水樣中對兩種離子也能很好的響應,實際水樣環(huán)境并不會影響Au-CNPs對離子的檢測。(2)熒光石墨烯量子點(GQDs)的合成及其對Fe3+的檢測基于此前的研究,用谷胱甘肽(GSH)作為碳源,乙二醇作為溶劑,利用溶劑熱法制備出能夠發(fā)熒光的石墨烯量子點。通過AgN03來調(diào)節(jié)石墨烯量子點表面修飾的基團種類,當沒有加入AgNO3時,所制備的石墨烯量子點(SN-GQDs)表面有羥基(-OH),羧基(-COOH),氨基(-NH2)和巰基(-SH)等基團修飾。當在反應體系中加入了 AgNO3時,因AgNO3可以與GSH中的-SH結(jié)合從而形成了 Ag2S,即-SH從石墨烯量子點表面脫落,所制備出的石墨烯量子點(N-GQDs)表面就沒有該基團修飾。隨后用XRD、TEM、原子力顯微鏡(AFM)、XPS和IR等手段對量子點進行了物相、形貌、元素等表征。同時也研究了兩種量子點對金屬離子的檢測。同樣挑選了 13種待檢測的金屬離子,測試結(jié)果發(fā)現(xiàn)SN-GQDs對Hg2+具有特殊地離子響應性質(zhì)。而N-GQDs則能對Fe3+快速離子響應,并且在5.0*10-5到2.0*10-3M這一范圍內(nèi),Fe3+濃度與N-GQDs的相對熒光強度呈現(xiàn)出很好的線性關(guān)系。(3)三基色熒光材料調(diào)制白光的制備探索通過處理兩種含有巰基的有機物2-巰基苯并噻唑和2-巰基吡啶,分別與AgN03按一定的比例混合后溶解在乙酸乙酯溶劑中,快速攪拌,離心洗滌后烘干即可得到熒光粉末。將制備出的能發(fā)出紅色熒光和黃綠色熒光的聚集誘導熒光材料與之前合成的藍色熒光量子點,通過調(diào)配這三基色的熒光材料的比例,得到了可以發(fā)出白光的熒光材料。
[Abstract]:Fluorescent materials have been paid attention to by researchers for many years because of their special luminescent properties. At the same time, fluorescent materials have been widely used in many fields, such as fluorescent molecular probes, biological imaging, photoresponse, light-emitting diode (LED) and solar cells. In this paper, three different groups of fluorescent materials have been synthesized by combustion, solvothermal and agitation methods, and their properties and applications have been discussed based on the investigation of a large number of previous work published at home and abroad. The main contents include the following three aspects: (1) the synthesis of fluorescent carbon nanoparticles (Au-C NPs) and the direct combustion of Fe3 and Hg2 were carried out to prepare fluorescent carbon nanoparticles (Au-CNPs) from the mixture of HAuCl4 and glutathione (GSH). The phase and morphology of carbon nanoparticles were characterized by means of X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS),) transmission electron microscope (TEM) and infrared spectrometer (IR). The results show that au is encapsulated in the inner layer of carbon particles, and the surface of the particles is modified by a large number of organic groups. In order to investigate the response of Au-CNPs to metal ions, 13 kinds of metal ions were selected. The results show that Au-CNPs can recognize both Fe3 and Hg2 ions. The fluorescence intensity of Au-CNPs is linearly correlated with the concentration of both ions when the concentration of Fe3 is 1.0 ~ (-5) ~ 2.0 ~ (-1) ~ (-3) M and the concentration of Hg2 is in the range of 5.0 ~ (-5) ~ 3.0 ~ (-2) M. In addition, we also investigated the response of Au-CNPs to Fe3 and Hg2 in real water samples. The results show that Au-C NPs can also respond well to two kinds of ions in real water samples. (2) Synthesis of fluorescent graphene quantum dot (GQDs) and its detection of Fe3 based on previous studies, glutathione (GSH) was used as carbon source and ethylene glycol as solvent. Graphene quantum dots were prepared by solvothermal method. The types of groups modified on the surface of graphene quantum dots were regulated by AgN03. When AgNO3 was not added, the surface of graphene quantum dots (SN-GQDs) was modified with hydroxyl group (-OH), carboxyl group (-COOH), amino group (-NH2) and mercapto group (-SH). When AgNO3 was added to the reaction system, the Ag _ 2S was formed because AgNO3 could bind to the -SH in GSH, that is, the surface of graphene quantum dots (N-GQDs) was not modified by Ag _ 2S when -SH was removed from the surface of graphene quantum dots. Then the phase, morphology and elements of the QDs were characterized by XRD-Tem, atomic force microscope (AFM) (AFM) and IR. The detection of metal ions by two quantum dots is also studied. Thirteen kinds of metal ions were also selected. It was found that SN-GQDs has a special earth ion response to Hg2. N-GQDs, on the other hand, can respond to the fast ions of Fe3. There is a good linear relationship between the concentration of Fe _ 3 and the relative fluorescence intensity of N-GQDs in the range of 5.0 ~ 2.0 ~ 10 ~ (-3) M. (3) the preparation of white light modulated by tricolor fluorescent materials and the treatment of two organic compounds containing mercapto group 2-mercaptobenzothiothiothioate Azoles and 2-mercaptopyridine, The fluorescent powder was obtained by mixing with AgN03 in a certain proportion and then dissolving in ethyl acetate solvent, stirring quickly, drying after centrifugation and washing. The aggregation induced fluorescence material which can emit red fluorescence and yellow green fluorescence was mixed with the blue fluorescence quantum dot, and the white fluorescent material was obtained by the proportion of the three primary color fluorescent materials.
【學位授予單位】：安徽大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：O657.3
本文編號：2144619
[Abstract]:Fluorescent materials have been paid attention to by researchers for many years because of their special luminescent properties. At the same time, fluorescent materials have been widely used in many fields, such as fluorescent molecular probes, biological imaging, photoresponse, light-emitting diode (LED) and solar cells. In this paper, three different groups of fluorescent materials have been synthesized by combustion, solvothermal and agitation methods, and their properties and applications have been discussed based on the investigation of a large number of previous work published at home and abroad. The main contents include the following three aspects: (1) the synthesis of fluorescent carbon nanoparticles (Au-C NPs) and the direct combustion of Fe3 and Hg2 were carried out to prepare fluorescent carbon nanoparticles (Au-CNPs) from the mixture of HAuCl4 and glutathione (GSH). The phase and morphology of carbon nanoparticles were characterized by means of X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS),) transmission electron microscope (TEM) and infrared spectrometer (IR). The results show that au is encapsulated in the inner layer of carbon particles, and the surface of the particles is modified by a large number of organic groups. In order to investigate the response of Au-CNPs to metal ions, 13 kinds of metal ions were selected. The results show that Au-CNPs can recognize both Fe3 and Hg2 ions. The fluorescence intensity of Au-CNPs is linearly correlated with the concentration of both ions when the concentration of Fe3 is 1.0 ~ (-5) ~ 2.0 ~ (-1) ~ (-3) M and the concentration of Hg2 is in the range of 5.0 ~ (-5) ~ 3.0 ~ (-2) M. In addition, we also investigated the response of Au-CNPs to Fe3 and Hg2 in real water samples. The results show that Au-C NPs can also respond well to two kinds of ions in real water samples. (2) Synthesis of fluorescent graphene quantum dot (GQDs) and its detection of Fe3 based on previous studies, glutathione (GSH) was used as carbon source and ethylene glycol as solvent. Graphene quantum dots were prepared by solvothermal method. The types of groups modified on the surface of graphene quantum dots were regulated by AgN03. When AgNO3 was not added, the surface of graphene quantum dots (SN-GQDs) was modified with hydroxyl group (-OH), carboxyl group (-COOH), amino group (-NH2) and mercapto group (-SH). When AgNO3 was added to the reaction system, the Ag _ 2S was formed because AgNO3 could bind to the -SH in GSH, that is, the surface of graphene quantum dots (N-GQDs) was not modified by Ag _ 2S when -SH was removed from the surface of graphene quantum dots. Then the phase, morphology and elements of the QDs were characterized by XRD-Tem, atomic force microscope (AFM) (AFM) and IR. The detection of metal ions by two quantum dots is also studied. Thirteen kinds of metal ions were also selected. It was found that SN-GQDs has a special earth ion response to Hg2. N-GQDs, on the other hand, can respond to the fast ions of Fe3. There is a good linear relationship between the concentration of Fe _ 3 and the relative fluorescence intensity of N-GQDs in the range of 5.0 ~ 2.0 ~ 10 ~ (-3) M. (3) the preparation of white light modulated by tricolor fluorescent materials and the treatment of two organic compounds containing mercapto group 2-mercaptobenzothiothiothioate Azoles and 2-mercaptopyridine, The fluorescent powder was obtained by mixing with AgN03 in a certain proportion and then dissolving in ethyl acetate solvent, stirring quickly, drying after centrifugation and washing. The aggregation induced fluorescence material which can emit red fluorescence and yellow green fluorescence was mixed with the blue fluorescence quantum dot, and the white fluorescent material was obtained by the proportion of the three primary color fluorescent materials.
【學位授予單位】：安徽大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：O657.3
【參考文獻】
相關(guān)期刊論文 前1條
1 王艷忠,黃素萍;新型熒光材料的應用及其發(fā)展趨勢[J];化工新型材料;2000年11期
，本文編號：2144619
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