ABSTRACT
The most fascinating point of Langmuir-Blodgett (LB) films is that they have an oriented layer structure at the molecular level. The molecules used in the LB method are amphiphilic molecules, and possess both hydrophilic and hydrophobic moieties at the same time. Wholly aromatic polyimides are thermally stable engineering plastics, and have been widely used as reliable insulating materials in microelectronics. The electrochemical evaluation of defects in the polyimide LB films by redox reaction in aqueous solution was examined. Orientation of molecules in L and LB films is one of the most important problems in basic physics, as well as fabrication of "super molecular machine". Polybenzothiazoles are obtained by curing the precursor polymers at 300°C with subsequent elimination of the protecting groups and water. The polymeric LB films prepared by the, "precursor method" have applied to devices such as an aligning layer for a liquid crystalline cell, solar battery cells, photomemory devices working in the photon mode, and electroluminescent devices.
