Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/306554
Title: Monitoring mettalic toxins using azomethinic cyclic and semi cyclic receptors
Researcher: Sandhu, Pawanpreet Kaur
Guide(s): Talwar, Dinesh and Singh, Raghubir
Keywords: Graphene Oxide
Metallic Toxins
Sensing
Silatrane
Silica
University: Panjab University
Completed Date: 2019
Abstract: The work described in the thesis was aimed to develop strategies for selective recognition, efficient extraction, and sensitive quantification of metallic toxins. To accomplish framed objectives of the proposed plan, some azomethinic receptors were synthesized and characterized by suitable techniques. The denticity of Schiff base was varied to get heterodentate receptors possessing N4O3, N2O3, N3O2, N6O2, N4O2, N6O2, N4O2, N2O2, NO2 and N6 donor systems. Besides, presence of multiple hydroxyl groups along with N donor sites favour strong coordination of metal ions with Schiff base receptors. The synthesized receptors were investigated for their colorimetric, spectrophotometric and spectrofluorimetric response towards various metal ions like Fe2+, Fe3+, Zn2+, Cd2+ and oxyanions such as SeO32- and AsO2-. In order to use the azomethinic receptors as probes for monitoring metallic toxins, protocols were standardized for developing recognition, quantification and extraction strategies for various metal ions. The interaction of receptors with metallic toxins was investigated by NMR titrations, spectrophotometric and spectrofluorimetric experiments. The selectivity of probes was assured by investigating interference of co-existing metal ions and anions. Besides, receptors were incorporated on the silica and graphene surfaces to obtain heterogenous materials for easy separation of probes from samples. To immobilize the azomethinic receptors on solid surfaces, silatranyl derivatives of some receptor were obtained. The silatranyl moieties are excellent for anchoring organic moieties on various surfaces. In the present work, silatranyl receptors were immobilized on silica nanoparticles, mesoporous silica nanoparticles and graphene oxide sheets via sol-gel method. The fabricated surfaces were further used for the adsorption of toxic metal ions. newline newline newline
Pagination: xiii, 178p.
URI: http://hdl.handle.net/10603/306554
Appears in Departments:Department of Chemistry

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01_title.pdfAttached File28.25 kBAdobe PDFView/Open
02_correction certificate.pdf516.19 kBAdobe PDFView/Open
03_abstract.pdf30.85 kBAdobe PDFView/Open
04_acknowledgement.pdf77.33 kBAdobe PDFView/Open
05_contents1.pdf69.84 kBAdobe PDFView/Open
06_list of abbrevations.pdf32.63 kBAdobe PDFView/Open
07_list of figures.pdf136.07 kBAdobe PDFView/Open
08_list of tables.pdf105.97 kBAdobe PDFView/Open
09_list of schemes.pdf30.58 kBAdobe PDFView/Open
10_chapter 1.pdf2.69 MBAdobe PDFView/Open
11_chapter 2.pdf1.51 MBAdobe PDFView/Open
12_chapter 3.pdf2.48 MBAdobe PDFView/Open
13_chapter 4.pdf1.69 MBAdobe PDFView/Open
14_chapter 5.pdf1.34 MBAdobe PDFView/Open
15_chapter 6.pdf949.14 kBAdobe PDFView/Open
16_chapter 7.pdf782.47 kBAdobe PDFView/Open
17_appendix.pdf2.59 MBAdobe PDFView/Open
80_recommendation.pdf782.47 kBAdobe PDFView/Open
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