title: Inverse Kinetic and Equilibrium Isotope Effects on Self-Assembly and Supramolecular Chirality of Porphyrin J-Aggregates.
abstract: When mixtures of D2O/DCl are used to foster the self-assembly formation of TPPS4porphyrin J-aggregates in aqueous solutions, an inverse kinetic isotope effect of 0.4 and an inverse equilibrium isotope effect of 0.6 are clearly detected. Most importantly, the addition of at least 10 % D2O causes an inversion in the handedness of the final chiral J-aggregates, thus evidencing an important role of deuterium in driving the enantiomeric excess in the scalemic mixture of such supramolecular assemblies.
authors.affiliation: CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy), Fax.
authors.forename: Roberto
authors.initials: R
authors.lastname: Zagami
authors.affiliation: CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy), Fax.|Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, and C.I.R.C.M.S.B., V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Romeo
authors.affiliation: CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy), Fax.
authors.forename: Maria A
authors.initials: MA
authors.lastname: Castriciano
authors.affiliation: CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy), Fax.|Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, and C.I.R.C.M.S.B., V.le F. Stagno D'Alcontres 31, 98166, Messina, Italy.
authors.forename: Luigi
authors.initials: L
authors.lastname: Monsù Scolaro
mesh_terms: D002942:Circular Dichroism; D017666:Deuterium Oxide / Q000737:chemistry; D007700:Kinetics; D011166:Porphyrins / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
chemical_list: D011166:Porphyrins; C016136:tetraphenylporphine sulfonate; D017666:Deuterium Oxide
keywords: chirality; isotope effect; kinetics; porphyrins; self-assembly