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WT5”HZ]Four new organosilane compounds containing cholesteryl group were synthesized by esterification of 3,3,5,5 tetramethyl 3,5 disila 4 oxa cyclohexane 1 carboxylic acid and ω hydroxyalkyl, cholesteryl carbonate in the presence of DCC and DMAP. Their structures were characterized by 1H NMR, IR and elemental analysis. Their phase behaviors were investigated by differential scanning calorimetry (DSC) and polarized microscopy. Results showed that these four organosilane compounds were all liquid crystalline and longer spacer was advantageous to orientation of organosilane heterocycle and cholesteryl group.
WT5 "HZ] Four new organosilane compounds containing cholesteryl group synthesized by esterification of 3,3,5,5 tetramethyl 3,5 disila 4 oxa cyclohexane 1 carboxylic acid and ω hydroxyalkyl, cholesteryl carbonate in the presence of DCC and DMAP. Their structures were characterized by 1H NMR, IR and elemental analysis. Their phase behaviors were investigated by differential scanning calorimetry (DSC) and polarized microscopy. Results showed that these four organosilane compounds were all liquid crystalline and longer spacer bent to orientation of organosilane heterocycle and cholesteryl group.