發(fā)布時(shí)間：2018-03-31 15:05

  本文選題：InP　切入點(diǎn)：QDs　出處：《天津理工大學(xué)》2016年碩士論文

【摘要】：磷化銦量子點(diǎn)(InP QDs)以其獨(dú)特的光學(xué)性能及其低毒等特點(diǎn)而引起人們的普遍關(guān)注,在太陽(yáng)能電池、發(fā)光二極管以及生物成像領(lǐng)域有廣泛的應(yīng)用。隨著人們對(duì)InP QDs研究及其在光電和生物醫(yī)學(xué)等領(lǐng)域應(yīng)用推廣的深入,尋求大規(guī)模生產(chǎn)InP QDs的合成方法迫在眉睫。在InP QDs的應(yīng)用方面,基于光電器件的要求,將QDs嵌入固體基質(zhì)的研究成為必要。此外,生物成像對(duì)InP QDs在生物相容性以及其細(xì)胞毒性等方面提出了較高的要求。針對(duì)以上問(wèn)題,本論文的主要工作如下:(1)高發(fā)光效率的InP/ZnS QDs溶劑熱法制備:通過(guò)使用簡(jiǎn)單易控的溶劑熱法、對(duì)InP/ZnS QDs的合成條件進(jìn)行了系統(tǒng)研究。通過(guò)對(duì)溶劑體積、藥品劑量等實(shí)驗(yàn)條件的控制,合成了尺寸可調(diào)的InP QDs。通過(guò)進(jìn)一步在包殼過(guò)程中各個(gè)實(shí)驗(yàn)條件的調(diào)節(jié)與優(yōu)化,成功摸索出了溶劑熱法制備高熒光量子點(diǎn)的合成工藝,并獲得了發(fā)光效率高達(dá)50%以上的QDs。(2)InP/ZnS QDs均分散二氧化硅凝膠玻璃的制備:使用APS和MPS作為硅烷偶聯(lián)劑有針對(duì)性的對(duì)不同表面性質(zhì)的QDs進(jìn)行表面修飾。以APS作為玻璃基質(zhì),采用溶膠凝膠法將表面修飾后的QDs嵌入玻璃基質(zhì)中,成功制備出發(fā)光效率高達(dá)30%、具有良好透光性及QDs均勻分散的二氧化硅凝膠玻璃。(3)包含多個(gè)QDs的QDs-SiO_2納米球的制備:采用傳統(tǒng)的“St?ber”法制備二氧化硅納米球,通過(guò)討論是否對(duì)QDs進(jìn)行表面修飾這一過(guò)程,得出了表面修飾對(duì)于保持二氧化硅納米球熒光性能的重要性。通過(guò)條件優(yōu)化,成功制備了熒光效率高達(dá)32%的納米球。將所得的二氧化硅納米球應(yīng)用于生物細(xì)胞成像中,取得了較好的實(shí)驗(yàn)結(jié)果。
[Abstract]:Indium phosphide quantum dots (InP QDs) have attracted wide attention due to their unique optical properties and low toxicity, and have been widely used in solar cells, light-emitting diodes and biometric imaging.With the development of InP QDs and its application in the fields of photoelectricity and biomedicine, it is urgent to seek the synthetic method of mass production of InP QDs.In the application of InP QDs, it is necessary to embed QDs into solid matrix according to the requirement of optoelectronic devices.In addition, bioimaging requires high biocompatibility and cytotoxicity of InP QDs.To solve the above problems, the main work of this thesis is as follows: (1) InP/ZnS QDs with high luminescence efficiency is prepared by solvothermal method. The synthesis conditions of InP/ZnS QDs are systematically studied by using a simple and easily controlled solvothermal method.InP QDs with adjustable size were synthesized by controlling the experimental conditions such as the volume of solvent and the dosage of drug.Through the adjustment and optimization of the experimental conditions in the process of cladding, the solvothermal synthesis of high fluorescence quantum dots has been successfully explored.The preparation of QDs.(2)InP/ZnS QDs dispersed silica gel glass with luminescence efficiency of more than 50% was obtained. APS and MPS were used as silane coupling agents to modify the surface of QDs with different surface properties.The surface modified QDs was embedded in the glass matrix by sol-gel method with APS as the glass substrate.The QDs-SiO_2 nanospheres with high luminescence efficiency, good transmittance and uniform dispersion of QDs were successfully prepared. The QDs-SiO_2 nanospheres containing multiple QDs were prepared by the traditional "St?ber" method, and the silicon dioxide nanospheres were prepared by the traditional "St?ber" method.By discussing the process of surface modification of QDs, the importance of surface modification in maintaining the fluorescence properties of silica nanospheres was obtained.The fluorescent efficiency of 32% nanospheres was successfully prepared by optimizing the conditions.The obtained silica nanospheres have been applied to the imaging of biological cells and good experimental results have been obtained.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TB383.1;O657.3

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