title: The use of prochiral centers for demonstrating asymmetric stacking in aggregates of azulenylazulenium cyanine dyes
abstract: [structure: see text]The diastereotopic methyl signals detected at low temperatures or high concentrations of an azulenylazulenium salt containing prochiral centers are consistent only with a model involving monomers in rapid equilibration with dimers in the staggered ("brickwork") arrangement and not in the "card-stacked" arrangement.
authors.affiliation: Department of Chemistry, University of Hawaii, Honolulu 96822, USA.
authors.initials: AE
authors.lastname: Asato
authors.initials: DT
authors.lastname: Watanabe
authors.initials: RS
authors.lastname: Liu