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metal-ligand-interaction
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Electrochemical Study on Multidentate Amino Acid Ligands and Their Co(II) and Fe(III) Complexation
, M.Sc. Thesis Sharif University of Technology ; Ghanbari, Bahram (Supervisor)
Abstract
In our previous work, we have been undertake complexion of new amino phenolic ligand with Fe(III) and Co(II) in order to synthesis LSCF - and LSF - type perovskite inorganic membranes. In this study, the interactions between Co(II) and Fe(III) cations and the mentioned ligands were investigated their by cyclic voltammetry technique. In aqueous solution, it was found that chelate ring size has more prominent effect on the ligand-metal interaction than the related amino acid substitution. Accordingly, the amino phenol substituted...
Design and Fabrication of Self-Healable Double-Network (DN) Hydrogels Based on Reversible and Irreversible Bonds with Tunable Mechanical Properties
, M.Sc. Thesis Sharif University of Technology ; Pourjavadi, Ali (Supervisor)
Abstract
In order to increase the mechanical properties and resistance of hydrogels to external damage, for their wide application in tissue engineering and medicine, self-healing two-grid hydrogels are used. Two-grid hydrogels with physical lattice have more advantages than two-grid hydrogels with chemical lattice because they have reversible and dynamic bonds, which in addition to increasing mechanical properties, also have self-healing properties. In order to achieve high mechanical properties, gelatin-based double-grid hydrogels with hydrogen bonding and metal-ligand interaction are designed. In the present paper, two-grid hydrogels consisting of gelatin network and other network of sodium...
Synthesis of Homo and Hetero Bi and Multinuclear Complexes Containing Gold and Closed-Shell Metals Using Bridging Phosphine and Pyridine Ligands and Study of Their Emission Properties
, Ph.D. Dissertation Sharif University of Technology ; Jamali, Sirous (Supervisor)
Abstract
In this project, multi-nucleated clusters of copper (I)-gold (I) and silver (I)-gold (I) were synthesized. Initially, two tetranuclear Au2Cu2 cluster complexes [Au2Cu2(μ-(PPh2)2py)2(μ-OH)](PF6)3, and [Au2Cu2Cl2(μ-(PPh2)2 py)2](OTf)2, have been prepared by the reactions of precursor complexes [Au2(μ-(PPh2)2py)2](OTf)2, and [Cu2(μ-(PPh2)2py)2(μ-SMe2)(OTf)2], with [Cu(NCCH3)4]PF6 and AuCl(SMe2), respectively. The crystal structures of two clusters were determined by X-ray crystallography, indicating a butterfly-shaped Au2Cu2 metal core for the first and a planar-shaped Au2Cu2 metal core for second cluster. In the first cluster, the Cu atoms occupy the edge-sharing bond, while in the second...