title: Positive magneto-LC effect in conjugated spin-bearing hexabenzocoronene.
abstract: The first neutral spin carrying hexabenzocoronene (HBC) derivative is described. The conjugated phenyl nitroxide substituted HBC with five alkyl chains exhibits a positive magneto-LC effect in columnar hexagonal liquid crystalline phase as probed by differential scanning calorimetry and electron paramagnetic resonance spectroscopy. Surprisingly, at 140 K the ΔMS = 2 transition can be observed indicating a thermally accessible triplet state between the neighboring molecules in the columnar arrangements.
authors.affiliation: Max Planck Institute for Polymer Research , Ackermannweg-10, D-55128, Mainz, Germany.
authors.forename: Prince
authors.initials: P
authors.lastname: Ravat
authors.forename: Tomasz
authors.initials: T
authors.lastname: Marszalek
authors.forename: Wojciech
authors.initials: W
authors.lastname: Pisula
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen
authors.forename: Martin
authors.initials: M
authors.lastname: Baumgarten