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Document Type |
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Thesis |
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Document Title |
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Synthesis of some heterocyclic conjugated systems as fluorescent chemosensor for the detection of various metal ions تحضير بعض الأنظمة الحلقية الغير المتجانسة المقترنة كمحسسات كيميائية فلوريسينسية للكشف عن أيونات المعادن المختلفة |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Metal ions play a vital role in our daily life, whilst they are useful, they have got some undesirable effects too which has been reported to have disrupted the physiological functions in biological systems among the pollutants and caused serious health issues to humans. Thus, the subject of detecting these metal ions have arisen and several methods have developed for this matter. Among the vast variety of methods fluorescence chemosensor technique become favorable due to low cost, visual simplicity, real-time detection, nondestructive properties, high sensitivity and the ability to be used in vivo imaging applications.
In this study we synthesis 12 fluorescence chemosensors 10 new compounds and the other two we studied their photophysical behavior, they are of type donor-π-acceptor (D-π-A). The absorbance and emission spectra of these compounds were tested in polar and non-polar solvents, and the photo physical parameters such as Stokes shift, transition dipole moments, oscillator strength and fluorescence quantum yield have effected on the basis of the polarity of the solvents. Also, we examined the selective chemosensor behavior for different metal cations by the fluorescence spectra. Chapter one chalcones give quenching behavior toward Fe+3, also chapter two pyrazolines show intensity quenching in the present of Fe+3. Chapter three Schiff bases compound (DDMD) show intensity quenching in the present of Ru+2 while (MDTC), (BHMD) and (HDDP) give enhancement in fluorescence in the present of Al+3, (BHMD) also give large quenching with Cu+2. The fourth chapter indenofluorene compounds give quenching result with Fe+3 and Cu+2. |
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Supervisor |
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Prof. Abdullah Mohammed Asiri |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1443 AH
2022 AD |
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Co-Supervisor |
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Prof. Salman Ahmad Khan |
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Added Date |
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Tuesday, December 20, 2022 |
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Researchers
| منى محمد العمري | Alamri, Mona Mohammed | Researcher | Doctorate | |
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