Concerted motions in supramolecular systems: metal-mediated assemblies of porphyrins that behave like nanometric step-machines.
According to NMR evidence the metal-mediated sandwich assemblies of porphyrins 2 and 3 undergo in solution a thermally driven motion that resembles that of a stepper: the spontaneous rotational motion of the pyridyl rings is converted into a reciprocating linear motion of the porphyrins.
Dipartimento di Scienze Chimiche, University of Trieste, Trieste, Italy. eiengo@units.it
Elisabetta
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Iengo
Teresa
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Gatti
Ennio
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Zangrando
Maria Teresa
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Indelli
Franco
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Scandola
Enzo
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Alessio