title: A Dynamic and Responsive Host in Action: Light-Controlled Molecular Encapsulation.
abstract: The rational design of a flexible molecular box, oAzoBox4+, incoporating both photochromic and supramolecular recognition motifs is described. We exploit the E↔Z photoisomerization properties of azobenzenes to alter the shape of the cavity of the macrocycle upon absorption of light. Imidazolium motifs are used as hydrogen-bonding donor components, allowing for sequestration of small molecule guests in acetonitrile. Upon E→Z photoisomerization of oAzoBox4+the guest is expelled from the macrocyclic cavity.
authors: Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
authors: Seán T J
authors: ST
authors: Ryan
authors: Schlumberger Gould Research, Madingley Road, Cambridge, CB3 0EL, UK.|Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
authors: Jesús
authors: J
authors: Del Barrio
authors: Department of Chemistry, King's College London, London, SE1 1DB, UK.
authors: Reynier
authors: R
authors: Suardíaz
authors: NASA Goddard Space Flight Center, Greenbelt, MD, USA.
authors: Daniel F
authors: DF
authors: Ryan
authors: Department of Chemistry, King's College London, London, SE1 1DB, UK.
authors: Edina
authors: E
authors: Rosta
authors: Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
authors: Oren A
authors: OA
authors: Scherman
keywords: host-guest systems; hydrogen bonds; macrocycles; photochemistry; supramolecular chemistry