【摘要】：配位聚合物在熒光、氣體儲(chǔ)存、吸附、催化、傳感和磁性等領(lǐng)域有著廣泛的應(yīng)用,是當(dāng)前化學(xué)和材料化學(xué)領(lǐng)域的研究熱點(diǎn)之一。與過(guò)渡金屬配位聚合物相比,稀土金屬配位聚合物具有多種多樣的拓?fù)浣Y(jié)構(gòu)和特殊的光電磁、催化等性質(zhì),使其越來(lái)越受到國(guó)內(nèi)外相關(guān)領(lǐng)域?qū)W者的青睞。但是合成過(guò)程中,由于受到溫度、時(shí)間、橋連配體等因素的影響,可控合成金屬配位聚合物仍然是一種挑戰(zhàn)。本文利用微波法、溶劑熱法合成了幾種稀土配合物微/納米結(jié)構(gòu),并對(duì)其結(jié)構(gòu)和性能進(jìn)行了研究,對(duì)其應(yīng)用進(jìn)行了探索。本項(xiàng)工作為合成其它配位聚合物提供了一定的方法路線和理論依據(jù)。本論文的主要研究?jī)?nèi)容有:(1)稻草束狀鋱配位聚合物的微波輔助合成及作為熒光探針檢測(cè)重金屬離子在微波輔助條件下,以均苯四甲酸(H4BTC)作為有機(jī)配體,快速合成了稻草束狀的配位聚合物。此方法快速,溫和且環(huán)保。提出了稻草束狀結(jié)構(gòu)配合物的可能形成機(jī)理,并討論了鋱基配位聚合物的熒光性能以及其檢測(cè)重金屬離子的能力,尤其是對(duì)Pb2+金屬離子的檢測(cè)能力。(2)釓及其它稀土配位聚合物空心球的溶劑熱合成與表征在無(wú)表面活性劑和模板的條件下,將2-氨基對(duì)苯二甲酸(H2ATPA)作為有機(jī)配體,使用溶劑熱法合成出新穎的具有空心結(jié)構(gòu)的配合物。氨基是一個(gè)給電子基團(tuán),而金屬離子通常是接受電子的。因此,在配合物中的氨基可以用作一個(gè)結(jié)合位點(diǎn)來(lái)結(jié)合金屬離子。本章研究了一系列反應(yīng)條件對(duì)產(chǎn)物結(jié)構(gòu)和形貌的影響,另外用類似的方法制備了其它稀土元素配位聚合物,討論了空心球狀結(jié)構(gòu)的形成機(jī)理和熒光性能。(3)釓及其它稀土配位聚合物球的合成與表征混合溶劑作為一種反應(yīng)介質(zhì),在合成具有各種形貌的無(wú)機(jī)材料中己經(jīng)被廣泛應(yīng)用。由于溶劑的不同,其對(duì)產(chǎn)物的形貌和物相方面都有著巨大的影響。本實(shí)驗(yàn)利用2-氨基對(duì)苯二甲酸(H2ATPA)作為有機(jī)配體,通過(guò)改變反應(yīng)溶劑的組成,從而合成了實(shí)心球狀的配位聚合物,另外用類似的方法制備其它稀土元素配位聚合物,討論了配合物熒光性能。
[Abstract]:Coordination polymers have been widely used in the fields of fluorescence, gas storage, adsorption, catalysis, sensing and magnetism. Compared with transition metal coordination polymers, rare earth coordination polymers have a variety of topologies, special optoelectronic magnetic and catalytic properties, which make them more and more popular in related fields at home and abroad. However, due to the influence of temperature, time and bridging ligands, the controllable synthesis of metal coordination polymers is still a challenge. In this paper, some rare earth complexes have been synthesized by microwave method and solvothermal method. The structure and properties of rare earth complexes have been studied and their applications have been explored. This work provides a certain method and theoretical basis for the synthesis of other coordination polymers. The main contents of this thesis are as follows: (1) Microwave-assisted synthesis of terbium coordination polymer from rice straw and detection of heavy metal ions with H4BTC as organic ligand under microwave-assisted conditions. The coordination polymers with straw bundles were synthesized rapidly. This method is fast, mild and environmentally friendly. The possible formation mechanism of the complexes with straw bundles was proposed. The fluorescence properties of terbium based coordination polymers and their ability to detect heavy metal ions were discussed. (2) Solvothermal synthesis and characterization of gadolinium and other rare earth coordination polymer hollow spheres. 2-aminoterephthalic acid (H2ATPA) was used as an organic ligand in the presence of no surfactant and template. A novel complex with hollow structure was synthesized by solvothermal method. An amino group is an electron-giving group, whereas metal ions usually receive electrons. Therefore, the amino group in the complex can be used as a binding site to bind metal ions. In this chapter, the effects of a series of reaction conditions on the structure and morphology of the product were studied. In addition, other rare earth element coordination polymers were prepared by a similar method. The formation mechanism and fluorescence properties of hollow spherical structure were discussed. (3) the synthesis and characterization of gadolinium and other rare earth coordination polymer spheres as a reaction medium have been widely used in the synthesis of inorganic materials with various morphologies. Because of the different solvents, it has a great influence on the morphology and phase of the product. In this study, solid spherical coordination polymers were synthesized by using 2-aminoterephthalic acid (H2ATPA) as organic ligands, and other rare earth coordination polymers were prepared by changing the composition of the reaction solvent. The fluorescence properties of the complexes were discussed.
【學(xué)位授予單位】：江西師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：O634.3;TB383.1

【共引文獻(xiàn)】

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本文編號(hào)：2259190