Anion-induced molecular motion within interlocked structures
<p>This thesis describes the construction and exploration of a variety of interlocked structures that exhibit anion-induced molecular motion of their constituent parts.</p> <p>Chapter One provides a brief overview of the field of supramolecular chemistry; in particular anion recogn...
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| Format: | Thesis |
| Language: | English |
| Published: |
2016
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| Summary: | <p>This thesis describes the construction and exploration of a variety of interlocked structures that exhibit anion-induced molecular motion of their constituent parts.</p> <p>Chapter One provides a brief overview of the field of supramolecular chemistry; in particular anion recognition and the concept of mechanically interlocked molecules and their applications in the fields of nanotechnology.</p> <p>Chapter Two describes the preparation of a series of bistable [2]rotaxanes followed by thorough investigation of their dynamic properties. Specifically, the success of an iodo-triazolium–naphthalene-diimide-based two-station axle component to facilitate halide-stimulated large-amplitude translational motion of the macrocyclic wheel in a [2]rotaxane is demonstrated.</p> <p>Chapter Three expands on the design principles established in the previous chapter with the synthesis of exotic higher-order structures including the first halogen bonding [3]rotaxane. These systems are capable of the recognition and colorimetric sensing of oxoanions <em>via</em> a novel dynamic pincer-like motion of the macrocycle components.</p> <p>Chapter Four further highlights the capabilities of controlled co-conformational switching in interlocked structures, resulting in a unique mechanism to accomplish anion sensing. The incorporation of C<sub>60</sub> fullerene- and ferrocenyl-reporter groups into a four-station [3]rotaxane enables sensing of chloride to be realised by a dual fluorescence response.</p> <p>Chapter Five presents the synthesis of novel interlocked structures containing a substituted perylene diimide motif that functions as a recognition site for macrocycles. Chloride binding stimulates translational motion in a [3]rotaxane and unprecedented rotary motion in a [3]catenane, with co-conformational changes in both systems resulting in a colorimetric response for this anion.</p> <p>Chapter Six describes experimental procedures used throughout this work and details the characterisation of novel compounds.</p> <p>Chapter Seven provides a summary of the major conclusions from the research described in this thesis.</p>. |
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