本文選題：能量轉(zhuǎn)換 + 量子剪裁效率　； 參考：《吉林大學(xué)》2015年博士論文

【摘要】：納米材料具有的特殊的光學(xué)，電學(xué)，磁學(xué)等方面優(yōu)越的物理性質(zhì)，使其在生物與能源領(lǐng)域的應(yīng)用快速發(fā)展。其中稀土摻雜的納米發(fā)光材料有著傳統(tǒng)發(fā)光材料無(wú)法比擬的優(yōu)勢(shì)，近年來(lái)，稀土發(fā)光材料在生物熒光檢測(cè)與太陽(yáng)能譜的光轉(zhuǎn)換研究方面展示了誘人的前景，已成為光譜物理與納米材料領(lǐng)域研究的熱點(diǎn)之一。盡管稀土發(fā)光材料在這些領(lǐng)域的研究已經(jīng)取得了一定的進(jìn)展，但是在實(shí)際應(yīng)用中仍然存在著不足。因此，本論文研究了稀土納米發(fā)光材料光子能量轉(zhuǎn)換的基本性質(zhì)，設(shè)計(jì)了新型高效納米發(fā)光材料結(jié)構(gòu)并對(duì)其在生物熒光檢測(cè)等方面的應(yīng)用進(jìn)行了探索，取得的成果如下： [1]采用高溫?zé)峤夥ê铣闪薔aYF4:Yb3+/Er3+納米粒子，研究了其在多波長(zhǎng)激發(fā)下的近紅外量子剪裁，確定了其剪裁通道和Er3+向Yb3+的能量傳遞效率，最高達(dá)68.2%。理論估算了其量子剪裁效率，為186-193%。 [2]采用水熱法合成了YVO4: Bi3+/Nd3+, Yb3+，通過發(fā)射光譜與動(dòng)力學(xué)測(cè)量研究了Bi3+/Nd3+向Yb3+的能量傳遞過程，理論推導(dǎo)出實(shí)際量子剪裁效率計(jì)算公式，并以此確定YVO4: Bi3+, Yb3+和YVO4: Nd3+, Yb3+分別在355nm和467nm激發(fā)下的實(shí)際剪裁效率，其結(jié)果遠(yuǎn)遠(yuǎn)小于理論估算值。 [3]研究了980nm激光激發(fā)下稀土氧化物高強(qiáng)度的全波段超寬帶發(fā)射，并把這種現(xiàn)象歸結(jié)為有效的交叉弛豫過程和光子雪崩過程的影響。同時(shí)，這種氧化物紅外波段的超寬帶發(fā)射的性能也為其在集成光波導(dǎo)器件應(yīng)用上提供了可能。 [4]利用水熱法合成了PEI-NaYF4:Yb3+/Tm3+及巰基乙酸(TGA)修飾的CdTe量子點(diǎn)，，通過靜電吸附作用使二者相連從而發(fā)生能量傳遞。利用這種復(fù)合結(jié)構(gòu)檢測(cè)血清中的鉛離子并得了很好的線性度(R=0.996)和較低的檢測(cè)限(80nM)，同時(shí)克服了可見光激發(fā)所造成的血清的自發(fā)熒光。 [5]采用自組裝法合成了NaYF4:Yb3+, Tm3/TiO2反蛋白石復(fù)合薄膜，并利用TiO2光子晶體調(diào)制，增強(qiáng)了NaYF4:Yb3+, Tm3+的上轉(zhuǎn)換發(fā)光，最優(yōu)增強(qiáng)為43倍。基于該復(fù)合薄膜，生物素與親和素之間的特異性連接以及Tm與FITC之間的共振能量傳遞，實(shí)現(xiàn)對(duì)親和素的高靈敏度檢測(cè)，確定其線性度為0.996,檢測(cè)限為48pmol,靈敏度為34pmol-1。 [6]利用納米打印技術(shù)和上轉(zhuǎn)換熒光共振能量傳遞原理制作CEA檢測(cè)試紙，實(shí)現(xiàn)了對(duì)CEA抗原高靈敏度和便攜化的檢測(cè)。
[Abstract]:Nanomaterials have special optical, electrical, magnetic and other excellent physical properties, which make their applications in the field of biology and energy rapid development. The rare earth doped nano-luminescent materials have unparalleled advantages compared with the traditional luminescent materials. In recent years, rare earth luminescent materials have shown attractive prospects in the research of bioluminescence detection and photoconversion of solar energy spectrum. It has become one of the hotspots in the field of spectral physics and nanomaterials. Although some progress has been made in the research of rare earth luminescent materials in these fields, there are still some shortcomings in practical applications. Therefore, the basic properties of photonic energy conversion of rare earth nano-luminescent materials are studied in this paper. The structure of novel high-efficient nano-luminescent materials is designed and its applications in biological fluorescence detection are explored. The results obtained are as follows. [1] NaYF4:Yb3 / er _ 3 nanoparticles were synthesized by high-temperature pyrolysis. The near infrared quantum tailoring under multi-wavelength excitation was studied, and the energy transfer efficiency of its clipping channel and Er3 to Yb3 was determined, with a maximum energy transfer efficiency of 68.2. The quantum tailoring efficiency is estimated to be 186-1931. [2] YVO4: Bi3 / Nd3, Yb3 was synthesized by hydrothermal method. The energy transfer process from Bi3 / ND 3 to Yb3 was studied by means of emission spectra and kinetic measurements. The actual tailoring efficiency of YVO4: Bi3, Yb3 and YVO4: Nd3, Yb3 under the excitation of 355nm and 467nm is determined, and the result is far less than the theoretical estimate. [3] the high intensity full-band ultra-wideband emission of rare earth oxides excited by 980nm laser is studied, and this phenomenon is reduced to the effect of effective cross-relaxation process and photon avalanche process. At the same time, the performance of this oxide infrared band UWB emission also provides a possibility for its application in integrated optical waveguide devices. [4] CdTe quantum dots modified by PEI-NaYF4:Yb3 / TM 3 and thioglycolic acid (TGA) were synthesized by hydrothermal method. The two QDs were connected by electrostatic adsorption and energy transfer occurred. The complex structure was used to detect the lead ions in the serum and the linearity was good. The low detection limit was 80 nm M ~ (-1), and the autofluorescence caused by the excitation of the visible light was overcome at the same time. [5] NaYF4:Yb3 and Tm3/TiO2 inverse opal composite films were synthesized by self-assembly method. The up-conversion luminescence of NaYF4:Yb3 and Tm3 was enhanced by using TiO2 photonic crystal modulation, and the optimal enhancement was 43 times. Based on the specific connection between biotin and avidin and the resonant energy transfer between TM and FITC, the high sensitivity detection of avidin was achieved. The linearity, detection limit and sensitivity were 0.996, 48pmol-1 and 34pmol-1, respectively. [6] the high sensitivity and portability of CEA antigen detection was realized by using nanometer printing technology and upconversion fluorescence resonance energy transfer principle.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 于佳,孟繼武,李穎,馬君,鄭榮兒;腫瘤發(fā)展過程中類胡蘿卜素、卟啉代謝的模擬及其熒光分析[J];光譜學(xué)與光譜分析;2004年08期

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