本文選題：手性　切入點：圓偏振發(fā)光　出處：《南京郵電大學(xué)》2017年碩士論文

【摘要】：我們將實物與其鏡像不能重疊的現(xiàn)象稱之為手性。手性在自然界和生命體中都扮演著十分重要的角色,是生命有序化和組織化的基礎(chǔ)。手性材料在圓偏振發(fā)光材料(CPL),電致化學(xué)發(fā)光材料(ECL),信息存儲,生物探針等方面廣泛的應(yīng)用前景使得研究人員對手性材料的研究傾注了極大的興趣。本文以傒核為生色團(tuán),以芴、咔唑為骨架結(jié)構(gòu)單元,(S)-1-溴-3,7-二甲基辛烷為手性側(cè)鏈,構(gòu)建的三種手性光電材料,并研究其圓偏振光及電致化學(xué)發(fā)光性質(zhì),主要內(nèi)容及創(chuàng)新點如下:(1)本章設(shè)計了以傒為骨架結(jié)構(gòu),在其灣位引入供電子咔唑基團(tuán),構(gòu)筑了D-A構(gòu)型的手性光電材料。研究表明:該手性小分子不僅在良溶液THF和THF-H2O體系中均表現(xiàn)出良好的圓偏振熒光信號,其不對稱因子均在10-4。而且薄膜狀態(tài)未經(jīng)熱退火處理,也具有良好的CPL表現(xiàn),其不對稱因子是上述兩種狀態(tài)的3倍,為圓偏振熒光器件的實際應(yīng)用提供了實踐和理論支撐。(2)本章以芴酮為原料,合成嵌段型的以芴為骨架的功能手性芴高分子材料,并對其熱穩(wěn)定性,電化學(xué)行為,單分子態(tài)、聚集體狀態(tài)及薄膜狀態(tài)下的光學(xué)性質(zhì)進(jìn)行研究。研究表明該手性材料熱穩(wěn)定性好,在單分子狀態(tài)、聚集體狀態(tài)及薄膜狀態(tài)下都能有良好的圓偏振熒光,并且在聚集狀態(tài)下分子間作用力會使其發(fā)生自組裝影響其堆積結(jié)構(gòu),令人驚喜的是該功能手性芴高分子能在退火的狀態(tài)下更加局部有序,不對稱因子提高40%以上,增強(qiáng)CPL信號。(3)本章以丁酯修飾的傒衍生物為主體,在灣區(qū)引入具有極強(qiáng)供電子能力的咔唑基團(tuán),合成了性能優(yōu)良的D-A構(gòu)型的手性功能材料。并對其電致化學(xué)發(fā)光(ECL)行為進(jìn)行了深入研究,研究結(jié)果表明該手性材料能夠在沒有共反應(yīng)劑的參與下依舊能呈現(xiàn)出強(qiáng)烈,穩(wěn)定的ECL信號,在電化學(xué)發(fā)光時由于氧氣的參與會使得該手性材料出現(xiàn)非常強(qiáng)烈的給體與受體之間的電子轉(zhuǎn)移,發(fā)光強(qiáng)度是無氧狀態(tài)下的2倍以上,是潛在的高靈敏度檢測痕量反應(yīng)性氧及監(jiān)測單線態(tài)氧的極佳工具。
[Abstract]:We call it chirality when the object and its mirror cannot overlap.Chirality plays a very important role in nature and life, and is the basis of ordering and organization of life.The wide application of chiral materials in the fields of circularly polarized luminescent materials (CPL), electrochemiluminescence materials (ECL), information storage, biological probes and so on has attracted great interest in the research of chiral materials.In this paper, three kinds of chiral optoelectronic materials have been constructed by using fluorene and carbazole as the skeleton structure unit, Schi-1-bromo-3-dimethyl-octane as chiral side chain, and their circular polarized light and electrochemiluminescence properties have been studied.The main contents and innovations are as follows: (1) in this chapter, we design a chiral optoelectronic material with D-A configuration by introducing electron carbazole groups into its bay position.The results show that the chiral molecules not only exhibit good circularly polarized fluorescence signals in THF and THF-H2O systems, but also exhibit asymmetric factors of 10-4.Moreover, the film state has good CPL performance without thermal annealing, and its asymmetry factor is three times that of the above two states, which provides practical and theoretical support for the practical application of circularly polarized fluorescence devices.) in this chapter, fluorenone is used as the raw material.Functional chiral fluorene polymer with fluorene as skeleton was synthesized and its thermal stability, electrochemical behavior, monolayer state, aggregate state and optical properties in thin film state were studied.The results show that the chiral materials have good thermal stability and have good circularly polarized fluorescence in monolayer, aggregate and thin film states, and the self-assembly will affect the stacking structure of the chiral materials.The surprise is that this functional chiral fluorene polymer can be more locally ordered in annealed state, the asymmetry factor is increased by more than 40%, and the CPL signal is enhanced.Carbazole groups with strong electron supplying ability were introduced into the Bay area to synthesize D-A chiral functional materials with excellent properties.The electrochemiluminescence (ECL) behavior of the chiral material was studied. The results showed that the chiral material could still exhibit strong and stable ECL signals without the co-reaction agent.When electrochemiluminescence occurs, the electron transfer between the donor and the acceptor is very strong due to the participation of oxygen, and the luminescence intensity is more than twice as high as that in the anaerobic state.It is an excellent tool for the detection of trace reactive oxygen and the monitoring of singlet oxygen.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB34

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