Synthesis, Characterization and Photophysical Study of Cationic Cyclometalated Platinum Complexes Containing 2-Phenylpyridine Ligand and its Derivatives

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Kermanshahian, Shahriar | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 48989 (03)
University: Sharif University of Technology
Department: Chemistry Science
Advisor(s): Jamali, Sirous
Abstract:
The cationic cyclometalated platinum(II) complex [Pt(ⱪ2-2-ppy)(ⱪ1-N-2-ppy)2][OTF], 2, has been prepared by reaction of [PtMe3I]4, 1, with one equiv Ag(OTF) and then three equiv 2-phenylpyridine. The similar complex with formula [Pt(ⱪ2-p′py)(ⱪ1-N-p′py)2][OTF], in which p′py = 2-(3-bromophenyl)pyridine, 4, has been prepared with similar procedure, from the reaction of 1 with one equiv Ag(OTF) and then three equiv of the corresponding cyclometalating ligand. Also, the cationic cyclometalated platinum(IV) complex [Pt(2-(p-tolyl)pyridine)2(Me)(H2O)][OTF], 3, has been prepared from the reaction of 1 with one equiv Ag(OTF) and then three equiv 2-(p-tolyl)pyridine. The structure of complexes 2, 3 determined using X-ray crystallography method in solid state and by 1H NMR spectroscopy in solution. Optical properties of 2, 3 and 4 have been investigated at room and low temperature in both solid state and dichloromethane solution. To gain insight into optical properties of 2, DFT and TD-DFT calculations were performed at optimized geometry of the ground state of the complex
Keywords:
Optical Properties ; Density Functional Theory (DFT) ; Time Dependent Density Functional Theory ; Cyclometalated Complex ; Cationic Complex ; 2-Phenylpyridine

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