title: Encapsulated or Not Encapsulated? Ammonium Salts Can Be Encapsulated in Hexameric Capsules of Pyrogallol[4]arene.
abstract: Tetraalkylammonium salts were found, contrary to literature reports, to be encapsulated into hexameric capsules of pyrogallol[4]arene in benzene solution. The guest affinity depended on the length of the alkyl chain, the counteranion, the solvent used, the ammonium concentration, and most importantly, the pyrogallol[4]arene to ammonium salt ratio. At high ammonium salt to pyrogallol[4]arene ratios no encapsulation was observed, presumably since the high salt destabilized the formed hexamers.
authors.affiliation: School of Chemistry, The Sackler Faculty of Exact Sciences, Tel Aviv University , Ramat Aviv, Tel Aviv 69978, Israel.
authors.forename: Shani
authors.initials: S
authors.lastname: Yariv-Shoushan
authors.affiliation: School of Chemistry, The Sackler Faculty of Exact Sciences, Tel Aviv University , Ramat Aviv, Tel Aviv 69978, Israel.
authors.forename: Yoram
authors.initials: Y
authors.lastname: Cohen