發(fā)布時(shí)間：2018-05-29 14:12

  本文選題：磁性質(zhì) + 發(fā)光性質(zhì)　； 參考：《長春理工大學(xué)》2015年碩士論文

【摘要】：多功能復(fù)合納米材料一般包含有兩種或多種不同功能的納米粒子,這類材料經(jīng)常呈現(xiàn)核殼結(jié)構(gòu)或者異質(zhì)納米結(jié)構(gòu),在催化、傳感、成像、藥物傳輸、基因調(diào)控、抗癌治療等方面有廣泛的應(yīng)用。稀土離子摻雜的釓基氟化物納米材料具有良好的發(fā)光特性和磁性;貴金屬納米材料和碳納米管具有光熱轉(zhuǎn)換性質(zhì),能夠?qū)⒔t外光轉(zhuǎn)化為熱;將具有以上三種性質(zhì)的納米材料復(fù)合得到同時(shí)具有磁性質(zhì)、發(fā)光性質(zhì)和光熱轉(zhuǎn)換性質(zhì)的磁光熱多功能復(fù)合納米材料,該復(fù)合納米材料在細(xì)胞成像、生物傳感器、目標(biāo)藥物傳輸、癌癥治療等生物醫(yī)學(xué)領(lǐng)域具有潛在的應(yīng)用價(jià)值。本論文將稀土離子摻雜的釓基氟化物納米材料(NaGdF_4:Yb~(3+),Er~(3+),Eu~(3+);NaGdF_4:Tb~(3+),Eu~(3+);NaGdF_4:Yb~(3+),Er~(3+)),多壁碳納米管(MWCNTs)或者貴金屬(Ag納米粒子)相復(fù)合,利用簡單的液相法制備了MWCNTs-NaGdF_4:Yb~(3+),Er~(3+),Eu~(3+);MWCNTs-NaGdF_4:Tb~(3+),Eu~(3+)和Ag/NaGdF_4:Yb~(3+),Er~(3+)多功能復(fù)合納米材料。利用X-射線粉末衍射儀(XRD),掃描電子顯微鏡(SEM),能量色散光譜(EDS)和紅外吸收光譜儀(FT-IR)表征復(fù)合納米材料的結(jié)構(gòu)、形貌、尺寸和組成;通過熒光光譜儀(PL)、振動(dòng)樣品磁強(qiáng)計(jì)(VSM)和光熱轉(zhuǎn)化實(shí)驗(yàn)對(duì)樣品的發(fā)光性、磁性和光熱轉(zhuǎn)換性進(jìn)行了表征,采用MTT法、熒光倒置顯微鏡和光熱治療效果表征了納米材料在生物醫(yī)學(xué)中的潛在應(yīng)用,研究結(jié)果表明:所制備的各類復(fù)合納米材料都具有良好的發(fā)光性質(zhì)、磁性質(zhì)、光熱轉(zhuǎn)換性質(zhì)、低的毒性、好的生物相容性、好的熒光成像和優(yōu)秀的光熱治療效果。因此所制備的磁光熱多功能復(fù)合納米材料在生物醫(yī)學(xué)、環(huán)境治理、熒光成像等領(lǐng)域有著廣泛的應(yīng)用前景。
[Abstract]:Multifunctional composite nanomaterials generally contain two or more nanoparticles with different functions. These materials often present core-shell or heterogeneous nanostructures in catalysis, sensing, imaging, drug delivery, gene regulation, Anticancer therapy and other aspects have been widely used. The rare earth ions doped gadolinium based fluorides nanomaterials have good luminescence properties and magnetic properties, and noble metal nanomaterials and carbon nanotubes have photothermal conversion properties, which can be converted into heat by near infrared light. The magneto-optothermal multifunctional composite nanomaterials with magnetic properties, luminescence properties and photothermal conversion properties were obtained by combining the above three kinds of nanomaterials. The composite nanomaterials were imaged in cells, biosensors, and target drug transmissions. Cancer therapy and other biomedical fields have potential application value. In this paper, the rare earth ions doped gadolinium fluoride nanomaterials NaGdF4: YbF4: YbDF4 / EbF4 / NaGdF4 / NaGdF4: NaGdF4: YbF4, multiwalled carbon nanotubes (MWCNTs), or noble metal silver (Ag) nanoparticles are synthesized, and the results show that the structure of NaGdF4 / NaGdF4 / NbF4 / NaGdF4 / 4 / TGdF4 / RE-doped NaGdF4 / RE-doped nanocrystalline fluorides (NaGdF4) are synthesized. The multifunctional composite nanomaterials of MWCNTs-NaGdF_4:Yb~(3 and Ag/NaGdF_4:Yb~(3 have been prepared by using simple liquid phase method. The structure, morphology, size and composition of the composite nano-materials were characterized by X-ray powder diffractometer (XRDX), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and infrared absorption spectrometer (FT-IR). The luminescence, magnetic properties and photothermal conversion properties of the samples were characterized by fluorescence spectrometer, vibratory sample magnetometer and photothermal conversion experiment. MTT method was used to characterize the luminescence, magnetism and photothermal conversion of the samples. The potential applications of nanomaterials in biomedicine were characterized by fluorescence inversion microscope and photothermal therapy. The results showed that all kinds of composite nanomaterials had good luminescence, magnetic properties and photothermal conversion properties. Low toxicity, good biocompatibility, good fluorescence imaging and excellent photothermal therapy. Therefore, the magnetothermal multifunctional composite nanomaterials are widely used in biomedicine, environmental control, fluorescence imaging and other fields.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.1;TB33

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