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Based on metal ions and organic ligands self-assembled structure of metal-organic complexes because of its rich topology and broad application prospects, making it the current coordination chemistry, supramolecular chemistry and materials chemistry research hotspot. For the rare earth compound is an organic ligand, the controllability of the structure is a major challenge in the synthesis of which is not only subject to many external factors, such as reaction temperature, reactant ratio, pH, etc., and rare earth metals large ionic radius, with a high median, the spatial configuration complex will also affect the structure and other characteristics of the control lines synthesized. This thesis is based on rare-earth organic complexes in optical, magnetic broader applications, the use of aromatic carboxylic acids, organic ligands, use of different ancillary ligands and manganese ions, synthesized a series of low-dimensional to high-dimensional organic complexes of rare earth objects, and its structure and properties were studied, the main research contents are as follows: 1. six rare earth (Pr, Nd, Sm, Eu) complex synthesis and study its properties. Hydrothermal conditions, using two - quinoline acid as a ligand and rare earth metal ions, through the introduction of 4,4 '- bipyridine, 2,2' - bipyridine and 1,10 - phenanthroline ancillary ligands were synthesized six rare earth complexes. X-crystal diffraction results show that complexes 1-4 for the dual-core structure of rare earth complexes [Ln2 (QUIN) 6 (H2O) 6] · 3H2O [Ln = Pr (1), Nd (2), Sm (3), Eu 2 (NO3) 2 (H2O) 2]. among complexes 1-4 dual-core structure through hydrogen bonds to form a two-dimensional supramolecular structure; 5 chain structure through weak π ... π stacking interactions form a two-dimensional super- molecular structure; 6 through hydrogen bonds to form a three-dimensional supramolecular network. Fluorescence curves indicate complexes 4 and 6 respectively red and green emission, the magnetic tests 2 and 6 to obtain the existence of the interaction between the metal antiferromagnetic. (2) two yttrium metal complexes Synthesis and Properties. Hydrothermal conditions for 5 - hydroxy isophthalic acid and Y3 assembled into one-dimensional chain structure [Y (OBDC) (H2O) 5] (H2O) 2 (CH3COO) (7); On this basis, the introduction of 1,10 - phenanthroline ancillary ligands, synthetic double core structure for the secondary structural elements of three-dimensional coordination polymer matrix Y (OBDC) (phen) (8), complexes 8 show a good blue-green fluorescence emission properties. 3 four rare earth (Eu, Nd) and rare earth transition metal (Mn) Synthesis and properties. With 5 - nitro carboxylic acid as a ligand, the introduction of manganese ions in rare earth metal ions (Eu3, Nd3) self-assembly process, {[Eu (NIPH) (HNIPH) (H2O) 2]-2H2O} n (9 ), {[Nd2 (NIPH) 3 (H2O) 3]-H2O} n (10) and [Ln2Mn (NIPH) 4 (H2O) 4] · 6H2O [Ln = Eu (11), Nd (12)]. with 9 and 10, respectively, are objects of rare earth Eu, Nd and rod-like structure formed by the ligand and quad-core structure for the secondary structural elements constitute a two-dimensional network structure. When the manganese ions into the synthesis reaction, the synthesized with [Ln2MnO20] - (OCO) 2 - [Ln2MnO20] (Ln = Eu, Nd) as the rod-like secondary structure of the three-dimensional heteronuclear Ln-Mn with the organic polymer matrix material 11 and 12 exists between the metal antiferromagnetic interactions, can be a good magnetic material.
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