Synthesis, Structure And Property Of Templated (Zinco) Borates

In this thesis, four templated borates were synthesized by reaction of bori acid、 3-Nitrophenylboronic acid、metal salt、DMF and organic amine as reactants under hydrothermal and solution conditions. These four templated borates’ crystal structure have been characterized by single-crystal X-ray diffraction data and further determined by four basic characterizations—element analysis, powder X-ray diffraction, FT-IR spectroscopy and thermal gravity analysis. Meanwhile compound 1 had been done by heating with different temperatures and further determined by powder X-ray diffraction, FT-IR spectroscopy and photoluminescence spectra after the sample were heated treatment. In addition, the effect on its fluorescence properties after annealing treatment was heat treatment were discussed. The ferroelectric on compound 2 and 4 had been characterized, specially, the first time to study the thin film ferroelectrics about compound 4. The crystal structure of compound 3 is special, revealing a rarely chiral zeolitic framework. All single-crystal X-ray diffraction data are as follow: The crystal of Compound [C9H14N][B5O6(OH)4] (1) belongs to P1(No.2) triclinic space group, with the following cell parameters:a=9.2635 (19) A, b=9.7473 (19) A, c=9.806 (2) A, a=73.12 (3) 。, β=83.82 (3) 。, γ=69.59 (3) 。, the compound 1 occurs with an emission maximum at 437nm upon excitation at 379 nm after heat treatment at 200 ℃.The crystal of Compound Ni(en)3·Hen·[B9O13(OH)4]-H2O (2) belongs to Pn monoclinic space group, with the following cell parameters:a=10.9982 (18) A, b=10.8439 (17) A, c=11.7551 (19) A, β=91.84 (0) °.According to the current report, the compound 2 is the first templated borate multiferroic material and it is made of two different units to form a chiral chain structure.The crystal of Compound Zn(1,3-DAP)[B4O7] (3) belongs to P432,2 tetragonal space group, with the following cell parameters:a=8.670(4) A, b=8.670(4) A, c= 12.722(13) A, a=90.00 °, β= 90.00 °, γ= 90.00 °, the compound 3 is rarely spiral chiral templated borate.The crystal of Compound[B5O6(OH)4][C6H]5N2] (4) belongs to Cc monoclinic space group, with the following cell parameters:a=9.786 (4) A,b=20.930 (9) A, c=14.577 (6) A,α=90.00 °, β=94.406 (5) °, γ=90.00 °, the thin film ferroelectrics on the compound 4 had been prepared and studied.