Dissertation > Excellent graduate degree dissertation topics show

Studies on the Design and Synthesis of New Fluorescent Probes Based on2,5-diphenylfuran and Their Recognizing and Sensing Properties for Metal Ions

Author: XuCaiHua
Tutor: HuShengLi
School: Hubei Normal University,
Course: Analytical Chemistry
Keywords: fluorescent probe metal ion 2,5-diphenylfuran PET selective recognition
CLC: O626
Type: Master's thesis
Year: 2013
Downloads: 13
Quote: 0
Read: Download Dissertation

Abstract


Nowadays, how to quickly and accurately detect the metal ion content in the living body,the environment and the food has become one important research subject in the analyticalchemistry, the environmental chemistry, the life science and other disciplines. Fluorescentmolecular probe method, with the characteristics of simple operation, less sampling, low costand remote digital transmission, is an excellent metal iron analysis method with broadapplication prospects. In this dissertation, the efforts were focusd on design and synthesis ofnew fluorescent molecule derived from2,5-diphenylfuran and stuty of their molecularrecognition and sensing for metal ions by UV and fluorescent spectroscope. A series ofcreative results have been obtained. The research results were summarized below:1. Based on the PET principle, a new fluorescent probe II-1with8-hydroxyquinolineunit as recognition function and2,5-diphenylfura as fluorophore was designed andsynthesized. Its structure and conformation was fully confirmed by single crystal X-raydiffraction. Its chemosensory properties for metal ions were studied by UV and fluorescentspectroscope. It was found that it exhibited selective recognition towards Fe3+among13metal ions investigated in DMF/water (98:2, v/v) BR buffer solution with fluorescencequenching, and formed1:1stoichiometry complex with Fe3+.2. A new clip-type fluorescent acceptor III-1with two mercaptobenzothiazole attached tothe parent nucleus of the2,5-diphenylfuran via methylene was designed and synthesized. andits structure and conformation was fully confirmed by single crystal X-ray diffraction. Itschemosensory properties for metal ions were also studied by UV and fluorescent spectroscope.It was found that it also exhibited selective recognition towards Fe3+among other metal ionsinvestigated in DMF/water (98:2, v/v) BR buffer solution with fluorescence quenching, andformed1:1stoichiometry complex with Fe3+.3. A new fluorescent probe IV-1with2,5-diphenylfura as fluorophore and DPA unit asrecognition function was designed and synthesized. Its molecular structure was confirmed bysingle crystal diffraction. Its binding properties investigated by UV and fluorescencespectroscope showed that it can selectively bind Co2+and Ni2+with fluorescence quenching,and formed1:1stoichiometry complex with Co2+and Ni2+.

Related Dissertations

  1. Thermal Stability of Complexes of Chitosan Quaternary Ammonium Salt and Metal Ion,O634
  2. Fire Retardancy Performance of Poly (Ethylene Terephthalate) Containing Melamine Cyanurate,TB383.1
  3. Preparation and Characterization of Polymer Micro/Nano Fibers by Laser Melt Electrospinning,TQ340.64
  4. The Cloing、Expression and Initial Assessment of Immunoprection of Thioredoxin Glutathione Reductase of Schistosomiasis Japonicum,R392
  5. Synthesis and Analysis of Coumarin-fluorescent Probes,O657.3
  6. Synthesis of Acridine Fluorescent Probes Based on PET for the Determination of Metal Ions,O657.3
  7. Research on Detection of the Carbamate Pesticides by Aminoacids-matal Ions Films Chemically Modified Sencor,S481.8
  8. Design and Applications of turn-on Fluorescent Probe Based on the Surface Structure of Quantum Dots Modulated Using Suitable Chemical Agents,O657.3
  9. Study on Synthesis and Application Properties of a New Type of Polyester Polyether Copolymer Hydrophilic Finishing Agent,TS195.2
  10. Surface Modification of Silica Particals of Different Size and Their Dispersion in Pet,TB383.3
  11. Preparation and Performance Research for Carbon Fiber Reinforced Polyethylene Terephthalate Composite,TB332
  12. Clinical Research of 18F-FDG PET/CT Imaging in Epithelial Ovarian Cancer After Surgery,R737.31
  13. Crystallization and Melting Behaviors of Poly (Ethylene Terephthalate) Modified by Styrene-Sodium Methacrylate Ionomer,O631.3
  14. Study on Novel Fluorescent pH Sensors Derived from Iminocoumarin and Thiophene-carboxaldehyde,O626.12
  15. The Study of Forming Process and Properties of PTT/PET Skin-Core Composite Monofilament with Large Diameter,TQ340.64
  16. Design and Implementation of Data Transmission on Micro-PET,TN919.3
  17. Preparing and Property Research of Small Diameter Tapered and Corrugated Vascular Graft,TS106.67
  18. PTT / PET composite fibers and fabrics juxtaposed Elasticity,TS156
  19. Adsorption of Benzothiophene and Dibenzothiophene Over Modified Activated Carbons and Y-zeolites,TE624.55
  20. The Application of PET/CT in Evaluating the Recurrence and Metastasis of Oral Cancer,R739.8
  21. Analysis of PLA2G6 Mutation in Early-onset Parkinsonism and Assay the Enzyme Activiy of Mutated PLA2G6 Protein,R742.5

CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Heterocyclic compounds
© 2012 www.DissertationTopic.Net  Mobile