Reversible modulation of helicity in a binaphthyl-bipyridinium species and its cucurbit[8]uril complexes.
We describe a tweezer-like molecule constituted of two 4,4'-bipyridinium arms connected by means of alkyl spacers to a 1,1'-binaphthyl unit acting as a hinge. In aqueous solution the twist angle of the binaphthyl can be reversibly modulated by chemical or photochemical reduction of the bipyridinium moieties, and/or addition of cucurbit[8]uril, showing a non-trivial XNOR logic behavior.
Photochemical Nanosciences Laboratory, Dipartimento di Chimica G. Ciamician, via Selmi 2, 40126 Bologna, Italy.
Chao
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Gao
Serena
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Silvi
Xiang
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Ma
He
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Tian
Margherita
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Venturi
Alberto
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Credi