title: A perfect match: fullerene guests in star-shaped oligophenylenevinylene mesogens.
abstract: Star-shaped oligophenylenevinylene (OPV) mesogens are shape-persistent and possess formally large void space. A mesogen with three styrene repeating units packs densely in a columnar helical arrangement. Attachment of one fullerene through a short spacer results in an exceptional increase of the mesophase stability. X-ray scattering and modeling evidence a triple-helical arrangement in which the fullerene perfectly fills the void space between the arms of the star mesogen.
authors: Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg (Germany). Matthias.Lehmann@uni-wuerzburg.de.
authors: Matthias
authors: M
authors: Lehmann
authors: Markus
authors: M
authors: Hügel
keywords: columnar phases; donor-acceptor systems; fullerenes; helical packing; liquid crystals