Author/Authors :
Yoo، نويسنده , , Hye Jin and Lee، نويسنده , , Sun Young and You، نويسنده , , Nam-Ho and Lee، نويسنده , , Dong Su and Yeo، نويسنده , , Hyeonuk and Choi، نويسنده , , Yong Mun and Goh، نويسنده , , Munju and Park، نويسنده , , Jinwoo and Akagi، نويسنده , , Kazuo and Cho، نويسنده , , Jae Whan، نويسنده ,
Abstract :
Liquid crystal (LC)-functionalized multi-walled carbon nanotubes (MWNTs) were synthesized by substituting decyloxy and phenylcyclohexyl (PCH) mesogenic moieties into MWNT surface through covalent linkage. The LC-functionalized MWNTs (LC-MWNTs) showed good dispersion stability in ethanol as well as good miscibility in a host thermotropic nematic LC (N-LC). A polarizing optical microscope image demonstrated that the LC-MWNTs could be well dispersed in the host N-LC within 5 wt% content of LC-MWNTs without aggregation, which is ascribed to the substantial affinity between the PCH moieties and the host N-LC molecules. It was found that the LC-MWNTs in the host LC matrix could be well aligned parallel to the direction of the applied magnetic field of 5 T. Then the high order parameter of 0.46 for LC-MWNTs was obtained from the measurement of polarized Raman spectroscopy.
Keywords :
Liquid crystal , Functionalized carbon nanotube , magnetic alignment , Carbon nanotube
