Nanosized molecular propellers by cyclodehydrogenation of polyphenylene dendrimers.
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.
Simpson
Christopher D
CD
Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Mattersteig
Gunter
G
Martin
Kai
K
Gherghel
Lileta
L
Bauer
Roland E
RE
Räder
Hans Joachim
HJ
Müllen
Klaus
K