title: The origin of cooperativity in double-wheel receptors. Freezing of internal rotation or ligand-induced torsional strain?
abstract: A model is proposed for the homotropic cooperative binding of a ditopic ligand to a double-wheel receptor with the aim of understanding the origin of cooperativity. Application of the model to the case of Ce(IV) bisporphyrinate double-decker complexes indicates that cooperativity is mainly due to ligand-induced torsional strain. [structure: see text]
authors.affiliation: Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica, I-00133 Rome, Italy. ercolani@uniroma2.it
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Ercolani