Design, Synthesis and Characterisation of π-Extended Viologen-Based Molecular and Supramolecular Complexes with Cucurbit[n]urils
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Abstract
Viologens, 4,4'-bipyridinium dications (V
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Chapter 2 describes the synthesis and characterisation of extended methyl viologen (EV[X]MV) derivatives with an aromatic extension between the pyridinium rings (X= phenylene, naphthalene, pyrene, chrysene, thiophene and dithiophene), their interactions with CB[7] and CB[8] macrocycles as well as physicochemical properties of the resultant host-guest systems are studied.
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Methyl viologen (MV
In Chapter 3, synthesis and characterisation of a family of extended viologens with aromatic substituents (EV[X]R, further denoted as extended aryl viologens), their interactions with CB[7] and CB[8] macrocycles as well as physiochemical properties of the resultant host-guest systems are studied.
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The design and synthesis of these new class of
Finally, in Chapter 4 the synthetic approach towards asymmetric aryl viologen (AV) and extended aryl viologen (EV[X]RR', where [X]= naphthalene) is presented. % Firstly, synthetic pathways based on the Zinke reaction for asymmetric aryl substitution of AV and EV are discussed. % Secondly, the supramolecular binding of the obtained asymmetric EV[Np]RR' with CB[8] is investigated along with the effect of supramolecular dimer formation on the optical properties. % Finally, the application of asymmetric aryl viologens in the formation of a bio-inspired nanofibers is presented.