本文關(guān)鍵詞： 熒光傳感 聚集誘導(dǎo)發(fā)光 光纖傳感器 爆炸物檢測(cè) 油田熒光示蹤劑　出處：《中國(guó)科學(xué)技術(shù)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：熒光分析傳感技術(shù)具有設(shè)計(jì)簡(jiǎn)單、容易操作、選擇性強(qiáng)、靈敏度高等優(yōu)點(diǎn)在生物和化學(xué)物質(zhì)分析、環(huán)境污染物檢測(cè)等方面發(fā)揮著舉足輕重的作用。然而,傳統(tǒng)的熒光探針在分析檢測(cè)時(shí)往往不可避免地存在著一些缺陷,如當(dāng)探針濃度改變時(shí)通常會(huì)出現(xiàn)微小的stocks位移,熒光強(qiáng)度呈非線性改變,濃度過高則會(huì)發(fā)生聚集,使探針熒光發(fā)生聚集誘導(dǎo)熒光淬滅,因此影響了探針的熒光信號(hào),降低了檢測(cè)的靈敏度。相比其他傳統(tǒng)的熒光材料,聚集誘導(dǎo)發(fā)光(Aggregation induced emission,AIE)類分子具有較突出的優(yōu)點(diǎn),在聚集態(tài)時(shí),這類分子能夠發(fā)出很強(qiáng)的熒光,而在溶液狀態(tài)下只有很微弱的熒光,甚至沒有熒光,這使提高熒光探針的靈敏度成為可能。在具有AIE特性的眾多化合物中,因發(fā)光性能優(yōu)良,合成方法簡(jiǎn)單、容易進(jìn)行基團(tuán)修飾等優(yōu)勢(shì)四苯基乙烯(Tetraphenylethylene,TPE)及其衍生物近年來受到了很多研究者的關(guān)注,并取得了許多成果。因此,本論文基于四苯基乙烯衍生物開展了一些研究,取得的階段性成果如下:1.合成了四苯基乙烯的衍生物烯丙基四苯基乙烯(ALTPE)。將1,6-己二硫醇,ALTPE與含有八個(gè)乙烯基的聚倍半硅氧烷(POSS-V8)以及2,4,6-三甲基苯甲�；趸�(UV819)光引發(fā)下,基于巰基-烯的(thiol-ene)"click"點(diǎn)擊聚合機(jī)理,在乙烯基硅烷修飾的光纖錐表面光鍍一層共價(jià)交聯(lián)聚合物熒光多孔膜(PFSF),構(gòu)建光纖錐熒光傳感器。結(jié)果表明:PFSF呈現(xiàn)出ALTPE較好的AIE特性發(fā)出很強(qiáng)的藍(lán)色熒光,同時(shí)具有較好的光熱穩(wěn)定性;POSS-V8的存在不僅可以使薄膜呈多孔性有助于氣體的擴(kuò)散,還能夠降低膜的折射率,使更多的薄膜熒光耦合到光纖錐中。構(gòu)建的光纖錐傳感器可以實(shí)現(xiàn)對(duì)2,4,6-三硝基甲苯(TNT)和2,4-二硝基甲苯(DNT)等硝基芳香族爆炸物氣體的檢測(cè),且重復(fù)使用性好,抗有機(jī)揮發(fā)類氣體的干擾能力強(qiáng)。2.將烯丙基四苯基乙烯與苯乙烯、乙烯基苯磺酸鈉通過分散聚合的方法制備了球形度高、粒徑分布窄的交聯(lián)聚合物熒光微球。結(jié)果表明:該微球分散到水溶液中具有較好的熱穩(wěn)定性、懸浮穩(wěn)定性,在分散到水溶液中熒光強(qiáng)度不受pH值變化及金屬離子存在的影響,有望應(yīng)用在油田熒光失蹤中,也為開發(fā)更多種油田熒光示蹤劑提供了新思路。
[Abstract]:Fluorescence sensing technology has the advantages of simple design, easy operation, high selectivity and high sensitivity. It plays an important role in the analysis of biological and chemical substances and the detection of environmental pollutants. Some defects are inevitable in the analysis and detection of traditional fluorescent probe. For example, when the probe concentration changes, there is usually a small stocks shift, the fluorescence intensity is nonlinear, and the concentration is too high. The fluorescence of the probe was induced by fluorescence agglomeration induced fluorescence quenching, which affected the fluorescence signal of the probe and reduced the sensitivity of the detection. Compared with other traditional fluorescent materials, the aggregation induced luminescence induced Mission AIEs have outstanding advantages. In the aggregated state, these molecules emit very strong fluorescence, while in the solution state there is only very weak fluorescence, or even no fluorescence, which makes it possible to improve the sensitivity of the fluorescence probe. Because of its excellent luminescence properties, simple synthesis method and easy group modification, Tetraphenylethyleneine (TPE) and its derivatives have been paid much attention by many researchers in recent years, and many achievements have been made in the synthesis of Tetraphenylethyleneine (TPE) and its derivatives. In this paper, some studies were carried out based on tetraphenyl ethylene derivatives. The results obtained are as follows: 1. Allyl tetraphenyl ethylene derivatives ALTPEPe have been synthesized. Under the photoinitiation of ALTPE and POSS-V8 (containing eight vinyl groups) and UV819, the derivatives of tetraphenyl ethylene were synthesized. Thiol-ene-based thiol-ene) "click" click polymerization mechanism, An optical fiber cone fluorescence sensor was constructed by photoplating a layer of covalent cross-linked polymer fluorescence porous film on the surface of the fiber cone modified by vinyl silane. The results showed that the AIE of ALTPE showed a strong blue fluorescence. At the same time, the existence of POSS-V8 with good photothermal stability can not only make the film porous to help the gas diffusion, but also reduce the refractive index of the film. The optical fiber cone sensor can be used for the detection of nitro aromatic explosive gases, such as 2N 4N 6 trinitrotoluene (TNT) and 2 N 4 dinitrotoluene (DNT), and has good reusability. The ability to resist the interference of organic volatile gases is strong. 2. Allyl tetraphenylethylene, styrene and sodium vinyl benzene sulfonate were prepared by dispersion polymerization. The results showed that the microspheres dispersed into aqueous solution had good thermal stability and suspension stability, and the fluorescence intensity was not affected by the change of pH value and the presence of metal ions. It is expected to be used in oil field fluorescence disappearance, and it also provides a new idea for the development of more oil field fluorescent tracers.
【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP212;TE39;O657.3

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