| 초록 |
The nano-structure of the synthetic perfluorinated supramolecule is strongly influenced by the molecular weight, molecular shape, and functionality, which can be controlled by surface anchoring and external force with our purpose. The basic thermal and structural experimental results show that the asymmetric fan-shaped dendrimer containing a hydrophilic core group of the cylinder and hydrophobic perfluorinated tails exhibits hexagonal columnar mesophase upon cooling from isotropic phase. SANS, WAXD, and TEM images show that the columns are strongly affected by the substrates; the columnar aligned perpendicular to hydrophobic substrate, and it aligned parallel to the hydrophilic surface. The most interesting thing is the ordering of these fan-shape molecules is aligned by magnetic field because of diamagnetism of the aromatic group in the molecule. |
