Thesis On Coordination Polymers

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This method provides control over size and morphology of the NCPs which were found to be readily dispersible in heptane.Furthermore, Gd2O3 was demonstrated to be an excellent substrate for the growth of thin films of Ln CPs.The temperature-sensing properties of these Ln CP films are also reported.The emphasis of this thesis is to design and synthesize innovative coordination polymers through crystal engineering, self-assembly, and hydrothermal synthesis.The thermal and magnetic properties of the coordination polymers are analyzed.The second part presents the unique chemical characteristics of benzotriazole and includes a thorough literature review on its use as a ligand in coordination chemistry, culminating to the development of a ligand system for the design of the targeted materials.Chapter 2 introduces the main family of benzotriazole-based ligands (L1-L3) employed in this thesis, focusing on their coordination chemistry with cobalt salts.Coordination polymers (CPs), in particular macroscale non-porous CPs constructed from flexible bridging ligands, have rarely been utilised in practical applications owing to their insolubility in most solvents.Accordingly, the focus of this study is to investigate and optimise methods to produce CPs at the nanoscale with high dispersibility with the ultimate goal of exploiting the large effective surface area inherent to nanoscale materials to expand the scope of their utility.By applying this method to alter both size and morphology, the NCPs have been observed to form two distinctive morphological structures: i) single elongated crystals of relatively uniform size and shape that are 28 ± 8 nm in length and 13 ± 4 nm in width, and ii) ultra-small seed crystals in the range of ~ 4-6 nm, which are clustered together giving rise to a raspberry-like morphology.The NCPs were fully characterised and it was confirmed that the NCPs have the same crystal structure to that of their macroscale counterparts.

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