Mechanically Interlocked Molecules; rotaxanes and their future with lanthanide metal complexes Niamh O'Shea, Patrick Manning, and Thorfinnur Gunnlaugsson School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College, Dublin, D02 R590, Ireland The world of mechanically interlocking molecules (MIMs) has gained providence since the 2016 Nobel Prize Awards, for which Stoddart and Sauvage received the prize for their pioneering work on molecular machines. The world of interlocking molecules has continued to be investigated and developed due to their versatility and flexibility. Contained within the supramolecular and mechanostereochemistry worlds are Interlocking Molecules. The Mechanostereochemistry world includes the interlocking molecules of catenanes, rotaxanes, psueodorotaxanes and knots. In particular, this project will look at rotaxanes and their potential uses within ever-growing imaging, electronic and magnetic industries. Rotaxanes are becoming more and more prominent in the world of mechanostereochemistry as their potentials are neverending. These molecules comprise two building blocks, these blocks are macrocycle and threads. There are various relatives of rotaxanes, for example, pseudorotaxanes and polyrotaxane. Rotaxanes comprise a ring and a dumbbell component; interestingly, these components are noncovalently bonded, but to break the components apart, a covalent bond must be broken. This project aims to synthesise rotaxanes with click chemistry through the btp [2,6-bis(1,2,3-triazole-4-yl)pyridine] binding motif. Currently, within industries and research worlds, synthesised and designed rotaxanes are being stoppered using transition metals; this project will aim to stopper the rotaxanes using lanthanides. Due to their unique properties, lanthanides are versatile metals utilised in electronic and magnetic industries. Rotaxanes are functional molecules in terms of molecular sensors and the nanomaterials world. This project aims to produce and create novel interlocking molecule materials for use within the electronic, imaging and magnetic industries whilst also aiming to utilise these structures in the formation of 'all organic-based redox-active materials for use in batteries. Characterisation and analysis of the produced rotaxanes will occur using various microscopy techniques, such as SEM, AFM and TEM, whilst also noting crystallisation. With the emerging outlook on the nanomaterials world and looking at technologies encompassing nanomaterials, this project is highly topical.
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