| Summary: | 碩士 === 國立中央大學 === 化學學系 === 105 === In this thesis, a series of supramolecular compounds and coordination polymers
were synthesized via self-assembly processes and their structures and properties were
examined.
Compounds {[Cd(4-bdt)(atpa)(H2O)]·(DMF)(H2O)2}n (1),
{[Cd(4-bdt)(htpa)(H2O)]·DMF}n (2), {[Cd(4-bdt)(ntpa)(H2O)]·DMF}n (3),
respectively, were produced by the reaction of cadmium salts,
4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole (4-bpt), and 2-aminoterephthalic acid (atpa),
2-hydroxyterephthalic acid (htpa) or 2-nitroterephthalic acid (ntpa) ligands in a mixture
of DMF/H2O at 50 °C. The structures of compounds 1, 2, and 3 are similar. They are
comprised of two-dimensional structures formed by seven-coordinated metal centers,
and three-dimensional supramolecular structures are formed by hydrogen bonding
interactions between the two-dimensional structures. Because the structure has a
one-dimensional channel, it has gas adsorption characteristics.
A series of zinc-based metal－organic frameworks {[Zn(4-bdt)(2,5-tdc)]·DMF}n
(4), {[Zn(4-bdt)(cca)2]·DMAC}n (5) were synthesized at 50 °C. The structures of the
two products were constructed from paddle-wheel units, which were formed from two
zinc ions, four carboxylates and two pyridine united. The properties of compounds 4
and 5 regarding the uptake of CO2 are also discussed.
The reaction of Cu2+ with 4-bpt in a mixture of DMAC/H2O/EtOH at room
temperature resulted in the formation of {[Cu(4-bdt)2(H2O)]·(DMAC)
(EtOH)0.5(H2O)3(NO3)2}n(6). Compounds 16 were characterized by infrared
spectroscopy (FT-IR), powder X-ray diffraction (PXRD), elemental analysis (EA),
and thermogravimetric analysis (TGA). Their structures were further confirmed by
single-crystal X-ray diffraction analysis.
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