Ferroelectric liquid crystalline phase transition of (S)-hexakis(4-(4'-(6-methyl)octyloxy)biphenoxy) cyclotriphosphazene

(S)-Hexakis(4-(4'-(6-methyl)octyloxy)biphenoxy) cydotriphosphazene (SMOCP) was synthesized in a search for new ferroelectric liquid crystalline compounds. We found an enantiotropic ferroelectric smectic C* phase between 419 and 441K in SMOCP by using polarizing microscopy and DSC measurements. The spontaneous polarization was estimated to be -130.5 mu C m(-2) at 437.6 K, several times larger than that of DOBAMBC ((S)-2-methylbutyl 4-(4'-decyloxybenzylidene)aminocinnamate.