| Ionic liquids (ILs), as a new kind of green solvents, witnessed the rapid growth period, and are entering a new phase of application. They have attracted much attention due to their novel electronic, electrochemical and optical properties , as well as their promising applications. In addition, supramolecular gels have evolved into a class of smart / functional nanomaterials with extensive application potentials recently. Most supramolecular gels studied today employ hydrogen bonding or molecular stacking as the driving force for gelation. Despite the major role that metal coordination plays in supramolecular chemistry,the use of metal-ligand interactions in the area of supramolecular gels has been somewhat neglected untilvery recently. Supramolecular gels including metal ions can capitalize on the unique richness of the attributes of metal ions such as photo-electronic,catalytic,redox,which stimulates research in this area. In view of this situation, as a continuation of our previous work on the design and synthesis of Ionic liquids metal complexes and gels attract our interest. Novel Ionic liquids metal complexes have been synthesized, and a series of superamolecular hydrogels bearing alkyl chain have been prepared by sonication of ionic liquids-based Pb(II) complexes, and the length of the alkyl chain is the salient factor in the gelation process.The relative content is as follows:1. Research on development of ionic liquids and gels2.Two novel Ionic liquids metal complexes [Ni(m-HNDA)2(H2O)4] (1), [Zn(m-HNDA)2(H2O)4]H2O (2) have been synthesized with MWI method and characterized by IR, UV spectra and elemental analysis, The single crystal structures of the title compounds were determined by X-ray diffraction. In crystal, the title compounds self-assembled to three-dimensional porous structure byπ-πinteraction, hydrogen bonding and intercalation of groups. Moreover, according to the stabilities of the hydrogen bonds and the intermolecularπ-πinteraction, we could predict that the compound 2 more stable than 1, which is in good agreement with the available experiments thermal stabilities, In addition, the results of the electrochemical properties show the cyclic voltammetry of ligands are changed for metal coordination. In addition, In H2O solutions, two compounds show single selectivity for F-.3. One novel Ionic liquids metal coordination polymer [Pb(m-HNA)(H2O)]·NO3·3H2O has been synthesized and characterized by IR, and elemental analysis. The single crystal structure of the title compound is determined by X-ray diffraction. In crystal, the title compound self-assembled to three-dimensional structure by hydrogen and coordination bonding. In addition, the results of the electrochemical properties show the compound exhibits a quasi-reversible electrode process.4. A series of superamolecular metal hydrogels bearing alkyl chain have been prepared by sonication of ionic liquids-based Pb(II) complexes, and the length of the alkyl chain is the salient factor in the gelation process. We believe that the hydrogel could act as a convenient and efficient anion test kit, and found an extraordinarily efficient self-assembly process in ILS/Pb gel system that undergoes stimuli-responsive disintegration and self-regeneration processes in real time. This process allows us for the first time to take snapshots of these dynamic processes, hence unraveling many interesting features.5. Three novel Ionic liquids metal coordination polymers [Cu4(bpdc)2(bpy)2]·NO3,[Ni(bpy)2(H2O)4]·bpdc·H2O,[Zn(bpy)2(H2O)4]·bpdc·H2O have been synthesized and characterized by IR, and elemental analysis. The single crystal structures of the title compound are determined by X-ray diffraction. In addition, discusses different temperature conditions on the influence of the structure of the three kinds of compounds. |
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