Document Details
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Document Type |
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Thesis |
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Document Title |
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Synthesis, spectroscopic and physicochemical investigations of novel heterocyclic dyes تحضير واستكشاف الخواص الطيفية والفيزيوكيميائية لصبغات حلقية غير متجانسة جديدة |
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Subject |
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Faculty of Sciences > Chemistry department |
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Document Language |
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Arabic |
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Abstract |
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In the present work novel heterocyclic dyes have been synthesized by the four different reaction series. • Series 1: Synthesis of donor acceptor chromophores synthesized by Knoevenagel condensation, the reaction of 6-methoxy-1,2,3,4-tetrahydro-naphthalin-1-one with appropriate aldehyde. • Series 2: Synthesis of novel chalcones by the aldol-condensation, the reaction of 3-acetyl-2,5-dimethyl thiophene with corresponding active aldehyde. • Series 3: acetyl-2,5-dimethylfuran with corresponding active aldehyde. • Series4: Synthesis of quinoline 3-carbonitrile by the one-pot multicomponent reaction (MCRs) of appropriate aldehyde, ethyl cyanoacetate, 6-methoxy-1,2,3,4-tetrahydro-naphthalin-1-one and ammonium acetate. • The structure of the newly synthesized heterocyclic dyes was established by elemental analysis, IR, 1H-NMR and 13C-NMR spectral analysis. • The structure of dyes was further conformed by the single X-ray crystallography. UV-Vis and fluorescence spectroscopy measurements provided that compounds are good absorbent and fluorescent. • Fluorescence polarity study demonstrated that the dyes were sensitive to the polarity of the microenvironment provided by different solvents. In addition, spectroscopic and physicochemical parameters, including electronic absorption, extinction coefficient, stokes shift, oscillator strength, transition dipole moment, fluorescence quantum yield and photochemical quantum yield were investigated in order to explore the analytical potential of synthesized dyes. |
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Supervisor |
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Prof. Dr. Abdullah M. Asiri |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1437 AH
2016 AD |
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Co-Supervisor |
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Dr. Salman A. KhaN |
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Added Date |
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Sunday, June 26, 2016 |
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Researchers
| هادي موسى بسيسي | Basisi, Hadi Mussa | Researcher | Master | |
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