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Title: Synthesis of novel acyclic and macrocyclic receptors for anion binding and templation
Author: Salgado, Chayanika
ISNI:       0000 0001 3546 9333
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 2007
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This thesis is concerned with the design and synthesis ofnew acyclic and macrocyclic receptors for anion binding and templation. ' Chapter One: Provides an introduction to the field of supramolecular chemistry and the nature of non-covalent interactions. A discussion of host-guest chemistry, in particular that of anions together with underlying principles of molecular recognition is given. Self assembly and anion templated interlocked molecular architectures are also reviewed. Chapter Two: Describes the design and synthesis of new Schiff base and amine pyridyl containing acyclic transition metal based receptors. The synthesis of transition metal macrocyclic receptor analogues are also presented. Their anion binding properties are investigated using a variety of spectroscopic and electrochemical techniques. Chapter Three: Explores the synthesis of a range of new acyclic tetra-amide based receptors containing the 2,6-bis-amide pyridyl moiety. Their anion binding properties are investigated by IH NMR spectroscopy. The ability of the new receptors to form orthogonal molecular assemblies is then investigated. The chapter concludes with the attempted syntheses of ion-pair receptors incorporating the new tetra-amide based anion recognition motif with polyethers. Chapter Four: Details the synthesis and anion binding properties of a range of bisvinyl functionalised acyclic compounds containing a tetra-amide anion recognition site. A new type of macrocycle is subsequently synthesised by an anion templated ring closing metathesis reaction. The anion binding properties of the new macrocycle are then studied by IH NMR spectroscopy. Its ability to form chloride anion templated pseudorotaxanes is studied with the use of different potential thread molecules. Whether oxoanions could be used as potential templates for pseudorotaxane formation is also probed. Chapter Five: Reports the synthesis and characterisation details for all products and intermediates. Chapter Six: Provides supplementary experimental information.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available