【作者】 秦成刚；

【导师】 陈接胜；

【作者基本信息】 吉林大学 ， 无机合成， 2006， 硕士

【摘要】 无机层状化合物是一类具二维层状结构的化合物,因特殊的结构和物理化学性质,尤其是能被客体分子嵌插进入层间的特性,使它们在催化,导电和生物等领域有着广泛的应用。本文以层板带正电荷的水滑石,层板带负电荷的蒙脱土两种层状无机化合物为主体,以生物分子,稀土化合物为客体分子对上述主体化合物开展嵌插研究。在水滑石的嵌插研究中,我们选择将脱氧核糖核酸分子DNA和生物荧光探针分子溴乙锭(Ethidium Bromide或EB)相互作用而得到的DNA-ET(Ethidium又称菲啶鎓,简写ET)复合物嵌入到水滑石层间,得到一种具有光致发光功能的新型复合化合物LDH-DNA-ET。这种新型复合化合物与DNA-ET复合物相比,发出的荧光向低波长移动了29 nm。我们还设计了一种新型的催化剂,催化剂中赖氨酸(Lys)和十六烷基三甲基溴化铵(CTAB)固载在蒙脱土的层板上,研究中发现,该复合物在苯甲醛和氯仿的反应体系中,在具有良好的催化性能的同时,回收后的催化效果仍然保持得很好。更多还原

【Abstract】 When a guest species is encapsulated in a host, composite host-guestcompounds with unusual properties may form. Layered inorganic materialshave been extensively consider as a good host to incorporate functional guestspecies which yield a variety of useful applications as catalyst, ion conductors,shape-selective adsorbents, ion exchangers, photofunctional materials, etc.,and many novel assembly structures can be tailored at the molecular levelthrough the design of the host and the guest species. In this thesis, we describesome new host-guest systems related to layered materials.1. Intercalation of DNA-Ethidium Complex into Layered DoubleHydroxide. A new composite compound LDH-DNA-ET has been preparedthrough intercalation of ethidium and DNA molecule into the layers of layereddouble hydroxide (LDH). The LDH-DNA-ET compound has beeninvestigated by various analytical methods such as X-ray diffraction, infrared,UV-vis and circular dichroism spectroscopy, element and thermogravimetricanalyses. The interlayer distance of the LDH-DNA-ET compound is 4.6 nm,larger than that of the pristine LDH. Taking into account the structure of theDNA molecule and the ET molecule, it is proposed that there are two layers ofDNA-ET composite between two adjacent LDH sheets. The DNA moleculesin the LDH-DNA-ET compound retain their chemical and biological integrity.The LDH-DNA-ET compound gave rise to photoluminescence of λem,max=610 nm under the excitation of a laser light of λex=488 nm.LDH-DNA-ET compound has potential significance about functionalmaterials of DNA development.2. Lysine and Cetyltrimethyl Ammonium Bromide(CTAB) Co-intercalatedMontmorillonite and Study on Its Catalytic Action. We succeeded toIntercalate lysine (Lys) molecules and CTAB molecules into between thelayers of montmorillonite at room temperature through an ions-exchangetechnique,and the production is MLC. Powder X-ray diffraction and infraredspectrum analysis indicate that the lysine molecules and the CTAB moleculesare intercalated into between the inorganic layers. The MLC molecules isstabilized in water and the lysine molecules and CTAB molecules can notescape from the layer. The MLC composite in combination with benzaldehydeand chloroform has also been applied in the reaction as a catalyst. However,the regathered MLC molecules showed high catalytic activity for the reaction.So, the catalyst’s repetition is not impossible.更多还原