title: "Too small, too big, and just right"--optical sensing of molecular conformations in self-assembled capsules.
abstract: Irradiation of dimethylbenzil within a cylindrical capsule gives bright green phosphorescence, while irradiation of benzil and dimethoxybenzil in the same capsule results in high energy blue fluorescence. This difference is likely due to the geometric restrictions imposed by the capsule's space on its excited guests, forcing a trans-planar conformation in some cases and cis-skewed in others.
authors.affiliation: Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
authors.forename: Mark R
authors.initials: MR
authors.lastname: Ams
authors.forename: Dariush
authors.initials: D
authors.lastname: Ajami
authors.forename: Stephen L
authors.initials: SL
authors.lastname: Craig
authors.forename: Jye-Shane
authors.initials: JS
authors.lastname: Yang
authors.forename: Julius
authors.initials: J
authors.lastname: Rebek
mesh_terms: D002214:Capsules; D008958:Models, Molecular; D008968:Molecular Conformation; D010658:Phenylglyoxal / Q000031:analogs & derivatives* / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013237:Stereoisomerism; D013696:Temperature
chemical_list: D002214:Capsules; D010658:Phenylglyoxal; C006697:benzil