雙Salamo金屬配合物的合成、結構、性質及鋅(Ⅱ)配合物熒光傳感器的研究
發(fā)布時間:2018-07-04 21:10
本文選題:Salamo + 型四肟配合物; 參考:《蘭州交通大學》2017年碩士論文
【摘要】:在科學研究和工農業(yè)生產、環(huán)境保護等很多領域,化學量的檢測與控制技術正在得到越來越廣泛的應用,而化學傳感器是這個過程的首要環(huán)節(jié)。近幾十年化學傳感器的研究和發(fā)展表明,化學傳感器的應用已深入人們現(xiàn)代生活的各個方面,環(huán)境保護和監(jiān)控,預防災難和疾病的發(fā)生,仍然是當前乃至今后相當長時期化學傳感器應用的主要領域。Salen型和Salamo型化合物是一種多功能的螯合配體,其金屬配合物在結構化學、立體化學、磁學、立體異構、配位化學、光譜學、分析化學、催化、光電顯示、攝影、農業(yè)以及光致變色等領域都有重要的作用。在本文中通過一個基于萘環(huán)的長鏈Salamo型配體超分子結構和性質的研究,尤其超分子配體和配合物作為熒光化學傳感器的性質進行了深入研究,得到了兩個具有應用前景的熒光化學傳感器。全文分為四個章節(jié)進行討論:一、本章節(jié)主要介紹了研究背景。重點介紹了超分子領域的發(fā)展概況,包括Salen型和Salamo型化合物的研究近況,熒光化學傳感器的研究近況,傳感器主體識別客體的機理以及具有代表性的實例。另外對論文的選題的意義進行了闡述。二、我們設計并合成了一個萘環(huán)基的雙邊四肟型配體,同時我們得到了配體與鋅(Ⅱ)、銅(Ⅱ)和鈷(Ⅱ)的醋酸鹽反應得到的三核金屬配合物,并通過單晶衍射儀測得了相應的晶體結構。然后分別用核磁氫譜儀、熔點測定儀、紫外-可見光譜儀、熒光光譜儀等表征手段,測定了配體和三種金屬配合物的結構和性質。我們對金屬配合物結構進行了分析討論,研究了分子內和分子間的作用力,以及分子間一維和二維的構型;通過紫外滴定實驗確定了配體和金屬離子的配比。三、研究了配體可以作為繼熒光傳感器識別含水有機體系中的鋅(Ⅱ)離子和苦味酸根離子。我們研究了繼電傳感器H4L的穩(wěn)定性和靈敏性,發(fā)現(xiàn)其符合傳感器的要求。通過以上結論,我們認為繼電傳感器有三個優(yōu)點:pH適應范圍大;穩(wěn)定性好;以及響應靈敏,可以用于實際應用中用于檢測自然水中的Pic-離子。四、我們探索了配體和鋅(Ⅱ)配合物作為pH熒光化學傳感器的可能性。在熒光光譜中鋅(Ⅱ)配合物以及其Pic-離子的聚合物熒光化學傳感器對H+/OH-的熒光光譜響應變化就像開關一樣,因此得到了繼電傳感器H4L的兩條熒光響應鏈:加入(①Zn2+,H+和OH-,②Zn2+,Pic,OH-和H+)離子后溶液的熒光發(fā)生“①關-開-關-開”和“②關-開-關-開-關”的變化。
[Abstract]:In many fields, such as scientific research, industrial and agricultural production, environmental protection and so on, the chemical quantity detection and control technology is more and more widely used, and the chemical sensor is the primary link in this process. The research and development of chemical sensors in recent decades show that the application of chemical sensors has penetrated into all aspects of modern life, environmental protection and monitoring, prevention of disasters and diseases. Salen type and Salamo type compounds are multifunctional chelating ligands, their metal complexes are structural chemistry, stereochemistry, magnetics, stereoisomerism, coordination chemistry, etc. Spectroscopy, analytical chemistry, catalysis, optoelectronic display, photography, agriculture, and photochromism play an important role. In this paper, the structure and properties of a long chain Salamo ligand based on naphthalene ring were studied, especially the properties of supramolecular ligands and complexes as fluorescent chemical sensors. Two fluorescent chemical sensors with promising applications have been obtained. The full text is divided into four chapters to discuss: first, this chapter mainly introduces the research background. The development of supramolecular field, including Salen type and Salamo type compounds, fluorescent chemical sensors, the mechanism of host recognition and guest recognition, and representative examples are introduced in this paper. In addition, the significance of the topic is expounded. Secondly, we have designed and synthesized a naphthalene ring bilateral tetraoxime ligand. At the same time, we have obtained the trinuclear metal complexes which react with zinc (鈪,
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