title: Porphyrinic supramolecular daisy chains incorporating pillar[5]arene-viologen host-guest interactions.
abstract: A porphyrin functionalised with pillar[5]arene and a viologen at its 5- and 15-meso positions assembles in a head-to-tail manner, producing linear supramolecular daisy chains in dichloromethane. At high concentrations, it forms an organogel which has been investigated by electron microscopy and rheological measurements, paving the way for the preparation of other functional supramolecular assemblies which harness viologen⊂pillararene host-guest interactions.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. stoddart@northwestern.edu.
authors.forename: Maher
authors.initials: M
authors.lastname: Fathalla
authors.forename: Nathan L
authors.initials: NL
authors.lastname: Strutt
authors.forename: Srinivasan
authors.initials: S
authors.lastname: Sampath
authors.forename: Khabiboulakh
authors.initials: K
authors.lastname: Katsiev
authors.forename: Karel J
authors.initials: KJ
authors.lastname: Hartlieb
authors.forename: Osman M
authors.initials: OM
authors.lastname: Bakr
authors.forename: J Fraser
authors.initials: JF
authors.lastname: Stoddart