| The chemistry of organic-inorganic coordination polymers has recently become area of increasing interest. Self-assembly of organic ligands and inorganic metal ions is one of the most efficient and widely used approaches for the construction of organic-inorganic composite materials. In the thesis, we studied the syntheses, structures and luminescent properties of 24 new metal-containing organic-inorganic coordination complexes generated from acyclic polyether-bridged ligands, and fully characterized by IR, elemental analysis, X-ray single-crystal diffraction and powdered X-ray diffraction. The luminescent properties, reversible ion-exchange, magnetic properties and thermal stability were investigated.1. Thirteen new Ag(I)-containing macrocycles and coordination polymers generated from Acyclic Polyether-bridged Ligands and AgX (X = BF4-, ClO4-, SbF6-, SO3CF3-, PF6-) were synthesized: [Ag2(L1)(H2O)](BF4)2](1),[Ag(L1)]BF4·0.5(C6H6) (unknown solvate) (2),[Ag(L1)]SbF6·(unknown solvate) (3),[Ag(L1)]SbF6(4),[Ag(L2)(C6H6) (H2O)](BF4)2·H2O(5),[Ag(L2)(H2O)](ClO4)2·(C6H6)(6),[Ag(L2) (H2O)] (SO3CF3)2·(C6H6)(7),{[Ag(L4)]ClO4}n(9),{[Ag(L4)]BF4}n(10),{[Ag(L4)]SO3CF3}n(11),{[Ag(L4)]SbF6}n(12),{[Ag(L4)]PF6}n(13). Their single crystal structures and teamperatur-dependent properties were investigated.2. Eleven new coordination polymeric compounds based on acyclic polyether-bridged ligands were obtained: [Cu(L7)·1.5CH3OH](14),[Cu(L8)·1.5CH3OH](15),[Cd(C18H16O7)(C12H8N2)](16),[Cu(C16H12O6) (C12H8N2)] (17),[Co2(C16H12O6)2(H2O) (C12H8N2)2](18),[Mn2(C16H12O6)2(H2O) (C12H8N2)2](19),[Pb(C16H12O6)·H2O]2·C10H8N2(20),[La(C16H12O6) (C16H13O6)] (21),[Ce(C16H12O6)(C16H13O6)](22),[Pb2(L11)2·C8H8N2](23),[Cu2(L16)2 (CH3OH)2]·(CH3OH)2(24). Their single crystal structures and luminescent properties were investigated in the solid state. This research provides a promising and convenient approach to access to the multifunctional luminescent materials that can provide tunable emissions by controlling the type of guest moieties.3. Several new schiff-base-containing based on acyclic polyether-bridged ligands were obtained. We put schiff-base into acyclic polyether-bridged ligands and want to get a satisfied result.The results reported herein demonstrate that the use of acyclic polyethe-bridged ligands as precursors to bind transition metal ions, is in fact a new and efficient approach for synthesis of oxygen-rich metal-organic nanometer-framework and for the choice of organic-inorganic composite materials with selectivity and ionic recognition; and we found that the temperature parameter can be used to control the conformation of flexible ligands, and, consequentially, the topology of the metal-organic frameworks. We also found that the rigid organic spacers can be selectively etched to generate the hollow MOF containing cavities with hydrophilic inner surface. The empty framework is able to undergo a reversibly lanthanide cation exchange in the solid state. Therefore, the composition and the luminescence of the host-guest system can be tuned in a manner that would not normally be feasible. The study provides a convenient route to access to the new tunable emitters by simply controlling the type of guest species. |
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