Liquid crystalline corannulene responsive to electric field.
An amide-appended corannulene derivative (3) with tribranched paraffinic side chains self-assembles into a hexagonal columnar liquid crystalline (LC) mesophase over a wide temperature range from 154 to -10 degrees C. In contrast with columnar LC assemblies of planar polycyclic aromatic hydrocarbons, the LC assembly of nonplanar 3 responds to an applied electric field and can align homeotropically to the electrode surface. Even after the electric field is switched off, this alignment is memorized for a long period of time unless the material is heated above the clearing temperature.
Miyajima
Daigo
D
School of Engineering and Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Tashiro
Kentaro
K
Araoka
Fumito
F
Takezoe
Hideo
H
Kim
Jungeun
J
Kato
Kenichi
K
Takata
Masaki
M
Aida
Takuzo
T
D000577:Amides / Q000737:chemistry; D004566:Electrodes; D004574:Electromagnetic Fields; D050866:Liquid Crystals / Q000737:chemistry*; D008958:Models, Molecular; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D014961:X-Ray Diffraction
D000577:Amides; D011084:Polycyclic Aromatic Hydrocarbons; C434863:corannulene