本文選題：微納材料 + 10-羥基苯并喹啉鈹��； 參考：《北京交通大學(xué)》2015年碩士論文

【摘要】：納米科技作為21世紀(jì)主導(dǎo)的科學(xué)技術(shù)之一,其目標(biāo)是以原子、分子或宏觀材料為出發(fā)點(diǎn),利用物質(zhì)在納米尺度上的各種奇異性能,制造出具有特定功能的產(chǎn)品。發(fā)展方便有效的方法制備具有特定形貌和尺寸的納米材料對(duì)于功能納米材料及新型器件的研究都起著至關(guān)重要的作用。然而,相對(duì)于無(wú)機(jī)材料,有機(jī)分子在熔點(diǎn)和熱穩(wěn)定性等方面的不足,導(dǎo)致有機(jī)納米材料的可控性制備具有一定難度,一般無(wú)法采用無(wú)機(jī)納米材料的制備方法。因此,探索有機(jī)納米材料在形貌和性能方面的可控制備受到研究者們?cè)絹?lái)越多的關(guān)注。 本文選取了金屬有機(jī)小分子配合物10-羥基苯并喹啉鈹(BeBq2),系統(tǒng)研究了有機(jī)小分子納米材料的形貌調(diào)控、生長(zhǎng)機(jī)理及其光學(xué)性能。 (1)利用再沉淀法,對(duì)金屬有機(jī)配合物BeBq2的微納結(jié)構(gòu)進(jìn)行了形貌調(diào)控,通過(guò)選擇不同的良溶劑和不良溶劑,分別制備了BeBq2矩形納米片、平行四邊形納米片及一維納米線。在納米線的生長(zhǎng)過(guò)程中,CTAB起到軟模板的作用。利用掃描電鏡對(duì)其微納結(jié)構(gòu)的形貌及尺寸進(jìn)行了表征,同時(shí)采用熒光顯微技術(shù)表征了微納結(jié)構(gòu)的發(fā)光性能。其中BeBq2矩形納米片具有顯著的光波導(dǎo)現(xiàn)象。通過(guò)BeBq2單晶數(shù)據(jù)分析,確定了分子排列方式,研究了微納結(jié)構(gòu)的生長(zhǎng)機(jī)理。 (2)基于以上三種微納結(jié)構(gòu),本文選擇光波導(dǎo)現(xiàn)象顯著的矩形納米片,對(duì)其生長(zhǎng)機(jī)理及光學(xué)性能進(jìn)行了進(jìn)一步研究。利用再沉淀法,以DMF為良溶劑,正己烷為不良溶劑,制備了形貌良好、尺寸均一,長(zhǎng)10μm、寬5μm、厚度幾百納米的BeBq2矩形納米片。通過(guò)XRD的結(jié)晶性表征以及BeBq2的單晶數(shù)據(jù),分析了矩形納米片的生長(zhǎng)機(jī)理。同時(shí)對(duì)納米片的光學(xué)性能,尤其是光波導(dǎo)性能進(jìn)行了較為系統(tǒng)的研究。穩(wěn)態(tài)光譜表明BeBq2納米片的發(fā)射峰相對(duì)于單體分子和固體粉末分別紅移26nm和15nm。通過(guò)近場(chǎng)光學(xué)掃描顯微鏡,發(fā)現(xiàn)BeBq2矩形納米片具有良好的光波導(dǎo)性能,并計(jì)算了納米片發(fā)射的熒光沿長(zhǎng)邊方向傳播的衰減率。
[Abstract]:Nanotechnology is one of the leading science and technology in the 21st century. Its goal is to make products with specific functions by using the strange properties of materials on nanometer scale, starting from atoms, molecules or macroscopic materials. The development of convenient and effective methods for the preparation of nanomaterials with specific morphology and size plays an important role in the study of functional nanomaterials and novel devices. However, compared with inorganic materials, the shortcomings of organic molecules in melting point and thermal stability lead to the difficulty of controllable preparation of organic nanomaterials. therefore More and more researchers pay more and more attention to exploring the control of morphology and properties of organic nanomaterials. In this paper, the organic nanolayers, 10-hydroxybenzo-quinoline beryllium (10-hydroxybenzoquinoline) beryllium, have been systematically studied. The shape control of rice material, Growth mechanism and optical properties. The morphology of organometallic complex BeBq2 was controlled by reprecipitation method. The rectangular BeBq2 nanocrystals were prepared by selecting different good solvents and bad solvents. Parallelogram nanocrystals and one-dimensional nanowire. CTAB acts as a soft template during the growth of nanowires. The morphology and size of the nanostructure were characterized by scanning electron microscope (SEM). The luminescent properties of the nanostructure were characterized by fluorescence microscopy. Among them, BeBq2 rectangular nanochip has obvious optical waveguide phenomenon. Based on the data analysis of BeBq2 single crystal, the molecular arrangement and the growth mechanism of micro / nano structure are determined. The growth mechanism and optical properties were further studied. Using DMF as good solvent and n-hexane as bad solvent, BeBq2 rectangular nanocrystals with good morphology, uniform size, length of 10 渭 m, width of 5 渭 m and thickness of several hundred nanometers were prepared by reprecipitation method. The growth mechanism of rectangular nanocrystals was analyzed by XRD characterization and single crystal data of BeBq2. At the same time, the optical properties of nanocrystals, especially optical waveguides, are studied systematically. The steady-state spectra show that the emission peaks of BeBq2 nanoparticles are red-shifted to 26nm and 15nm relative to monomers and solid powders, respectively. The near field optical scanning microscope shows that BeBq2 rectangular nanocrystals have good optical waveguide performance and the attenuation rate of fluorescence emission along the long side is calculated.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TB383.1

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