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Document Type |
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Thesis |
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Document Title |
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SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF SOME RUTHENIUM(II) DIIMINE COMPLEXES التحضيرات و الخواص الضوء فيزيائية لبعض معقدات داي ايمين الريثينيوم الثنائي |
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Subject |
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Faculty of Sciences |
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Document Language |
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Arabic |
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Abstract |
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The thesis included three main chapters:
In chapter 1, topics relevant to the studies presented in this thesis are introduced. These areas include the basic principles behind the ground and excited state properties of Ru(II) polypyridyl complexes and their applications of inorganic photophysics such as, solar cell, molecular machine and sensors.
In chapter 2, a series of complexes with the general formula [Ru(bpy)2(diamine)][PF6]2 {diamine = 1,2-diaminoethane (2), o-phenylenediamine (3), 1,2-diaminocyclohexane (4), 2,3-diaminonaphthalene (5)} was synthesized. The complexes were characterized by 1H NMR spectroscopy, mass spectrometry and elemental analysis while crystal structures were obtained for complexes (3) and (4). UV-vis absorption spectra of the complexes were collected and compared to that of [Ru(bpy)3][PF6]2 (1), showing that the MLCT band is red-shifted upon introducing the diamine ligands in place of bipyridine. Emission spectra, excited-state lifetimes and emission quantum yields were collected for the complexes (1 – 5), showing considerable changes in the photophysical characteristics. The emission spectrum of )5( exhibits an intense emission in the far red-NIR region when excited at 510 nm. The cyclic voltammograms of the complexes (1 – 5).
In chapter 3, the reactions was investigated of pyridine-2-carboxaldehyde with a range of aromatic primary amines, leading to formation of the expected Schiff bases in some cases, a mixture of products in some cases and the dimerized Schiff base in the case of p-toluidine. The investigations were supported with HNMR date and X-ray crystallographic studies. The resultant products from this condensation reactions were proceeded with cis-Ru(bpy)2Cl2, generating the proposed [Ru(bpy)2(L)][PF6]2.
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Supervisor |
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Dr. Bandar A. Babgi |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1439 AH
2017 AD |
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Co-Supervisor |
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Dr. Amal S. Basaleh |
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Added Date |
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Thursday, December 28, 2017 |
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Researchers
| كامله صالح الراشدي | Al-Rashdi, Kamelah Saleh | Researcher | Master | |
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