Organic-inorganic hybrid liquid crystals: thermotropic mesophases formed by hybridization of liquid-crystalline phosphates and monodispersed alpha-Fe2O3 particles.
A novel organic-inorganic hybrid thermotropic liquid crystal (LC) is developed by the hybridization of an organic phosphate having a mesogenic core and monodispersed alpha-Fe2O3 particles with different shapes through the specific adsorption of the phosphate group to the surfaces parallel to the c-axis of the alpha-Fe2O3. The hybrid LC shows thermotropic nematic or cubic liquid-crystallinity in wide ranges of temperatures. Variable-temperature small-angle X-ray measurements reveal that the spontaneous formation of periodic structure by the hybridization induces the thermotropic liquid crystallinity. This technique would lead development of novel types of dynamic functional materials with multi-responsiveness to magnetic and electric fields.
Kanie
Kiyoshi
K
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan. kanie@tagen.tohoku.ac.jp
Muramatsu
Atsushi
A
D003460:Crystallization; D005296:Ferrous Compounds / Q000138:chemical synthesis / Q000737:chemistry; D007091:Image Processing, Computer-Assisted / Q000379:methods; D046529:Microscopy, Electron, Transmission / Q000379:methods; D049329:Nanostructures / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry; D010316:Particle Size; D010710:Phosphates / Q000138:chemical synthesis / Q000737:chemistry; D013696:Temperature
D005296:Ferrous Compounds; D009942:Organometallic Compounds; D010710:Phosphates; C034236:ferrous oxide