title: Controlling photochemical geometric isomerization of a stilbene and dimerization of a styrene using a confined reaction cavity in water.
abstract: Utility of a water-soluble deep cavity cavitand, octa acid, as a reaction medium is illustrated by carrying out photochemical reactions of a stilbene and a styrene included within the octa acid in water. Geometric isomerization of trans-4,4'-dimethyl stilbene is restricted while dimerization of 4-methyl styrene is facilitated within the octa acid cavity. The excited-state chemistry of both systems is different in this medium from that in organic solvents. The change in chemistry is attributed to the supramolecular effects provided by the host cavity.
authors.affiliation: Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA.
authors.forename: Anand
authors.initials: A
authors.lastname: Parthasarathy
authors.forename: Lakshmi S
authors.initials: LS
authors.lastname: Kaanumalle
authors.forename: V
authors.initials: V
authors.lastname: Ramamurthy
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry* / Q000528:radiation effects; D019281:Dimerization; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D015394:Molecular Structure; D010777:Photochemistry; D012995:Solubility; D013237:Stereoisomerism; D013267:Stilbenes / Q000737:chemistry* / Q000528:radiation effects; D013343:Styrenes / Q000737:chemistry* / Q000528:radiation effects; D014867:Water / Q000737:chemistry
chemical_list: D002264:Carboxylic Acids; D013267:Stilbenes; D013343:Styrenes; D014867:Water