title: Nanosized molecular propellers by cyclodehydrogenation of polyphenylene dendrimers.
abstract: In a polymer analogous approach, large dendritic oligophenylenes containing benzene and tetraphenylmethane cores are transformed via oxidative cyclodehydrogenation to novel propeller-shaped molecules with large polycyclic aromatic hydrocarbon units as "blades". Structure analysis is performed by a combination of MALDI-TOF mass spectrometry, UV/vis, fluorescence, and Raman spectroscopy using solid-state sample preparation methods. These methods are also utilized to determine the degree of the cyclodehydrogenation reaction.
authors.affiliation: Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Simpson
authors.forename: Gunter
authors.initials: G
authors.lastname: Mattersteig
authors.forename: Kai
authors.initials: K
authors.lastname: Martin
authors.forename: Lileta
authors.initials: L
authors.lastname: Gherghel
authors.forename: Roland E
authors.initials: RE
authors.lastname: Bauer
authors.forename: Hans Joachim
authors.initials: HJ
authors.lastname: Räder
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen