title: Hinged molecular capsules: synthesis and conformational control via temperature, pH, or solvent composition.
abstract: Three new covalently linked molecular capsules were synthesized from their resorcinarene cavitand precursors in good yields. The capsules undergo reversible conformational switching between the closed "vase" form and the open "kite" form upon temperature or pH variation. The kite conformation obtained via either method in CDCl(3) switches to vase conformation upon addition of polar solvents such as acetone-d(6) or THF-d(8).
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, USA.
authors.forename: Sang-Woo
authors.initials: SW
authors.lastname: Kang
authors.forename: Peter P
authors.initials: PP
authors.lastname: Castro
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.forename: Jose E
authors.initials: JE
authors.lastname: Nuñez
authors.forename: Carlos E
authors.initials: CE
authors.lastname: Godinez
authors.forename: Linda M
authors.initials: LM
authors.lastname: Gutierrez-Tunstad
mesh_terms: D047250:Calixarenes; D002214:Capsules / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D012997:Solvents; D013696:Temperature
chemical_list: D002214:Capsules; D012997:Solvents; C466160:resorcinarene; D047250:Calixarenes; D010649:Phenylalanine