Document Details
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Document Type |
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Thesis |
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Document Title |
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SYNTHESIS, SPECTRAL STUDIES AND PHOTOVOLTAIC PROPERTIES OF SOME ORGANIC DYES تحضير ودراسة الخواص الطيفية والضوء كهربية لبعض الأصباغ العضوية |
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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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This work aims to demonstrate the synthesis, characterization and some of the interesting properties of some novel hetrocyclic chromophores such as 2-oxo-1,2,5,6-tetrahydrobenzo[h]quinoline-3-carbonitril, isoquinoline-1-carbonitrile, 5-aza-indeno[1,2-b] fluorine, pyridine-3-carboxylate and azlactone derivatives containg with the donor acceptor farmwork connected through a π -conjugated system of single and double bonds by one pot multi component reaction.
In the present work novel heterocyclic chromophores have been synthesized by the five diffrant reactions by one opt multi component reaction. chapter 1: Synthesis of 2-oxo-1,2,5,6-tetrahydrobenzo[h]quinoline-3-carbonitril (1-6) by the reaction of appropriate aldehyde, 3,4-dihydro-2H-naphthalene-1-one, ethyl cyanoacetate and ammonium acetate. Chaptere 2: Synthesis 4-(phenyl)-9-methoxy-5,6 dihydrobenzo[f]isoquinoline-1-carbonitrile (7-16) by the reaction of appropriate aldehyde, 6-methoxy-1,2,3,4-tetrahydro-naphthalin-1-one, malononitrile and ammonium acetate. Chapter 3: Synthesis of 11- Phenyl-6,12-dihydro-5-aza-indeno[1,2-b] fluorine (17-21) by the reaction of appropriate aldehyde, 2,3-dihydro-1H-inden-1-one, and ammonium acetate. Chapter 4: Synthesis of Ethyl 4-aryl-2 -methyl - 5 - oxo- 4, 5-dihydro - 1H-indeno [1,2-b] pyridine-3-carboxylate derivative (22 & 23) by the reaction of appropriate aldehyde, ethyl acetoacetate, and ammonium acetate with few drop of piperidine. Chapter 5: Synthesis of Azlactone derivative (24 &25) by the reaction of appropriate aldehyde, hippuric acid and anhydrous sodium acetate in acetic anhydride. The structure of the newly synthesized heterocyclic dye (1-25) was established by IR, 1H-NMR and 13C-NMR spectral analysis. The structure of dye 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 compounds were sensitive to the polarity of the microenvironment provided by deferent solvents. In addition, spectroscopic and physicochemical parameters, including electronic absorption, extenction coefficient, Stokes shift, oscillator and fluorescence quantum yield. Florescence quenching of the dyes with the different alcoholic solvent indicating intermolecular hydrogen bonding interactions between the dye with the alcohol. The fluorescence spectra of dyes were investigated in organized media of aqueous micellar solutions and may be used as a probe to determine critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) and cetyltrimethyl ammonium bromide (CTAB). The interactions of dyes with colloidal silver nanoparticles (Ag NPs) were also studied in ethanol using steady state fluorescence quenching measurements. |
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Supervisor |
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Prof.abdullah asiri |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1437 AH
2016 AD |
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Added Date |
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Monday, June 27, 2016 |
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Researchers
| سعد حامدي الثقفي | ALTHAQAFY, SAAD HAMEDI | Researcher | Doctorate | |
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