Synthesis and thermal properties of mesomorphic 1,1'-bis[ω-(4'-cyano-4-biphenyloxy)alkyl] ferrocenes
Titel:
Synthesis and thermal properties of mesomorphic 1,1'-bis[ω-(4'-cyano-4-biphenyloxy)alkyl] ferrocenes
Auteur:
Bhatt, J. Fung, B. M. Nicholas, Kenneth M.
Verschenen in:
Liquid crystals
Paginering:
Jaargang 12 (1992) nr. 2 pagina's 263-272
Jaar:
1992-08-01
Inhoud:
A new series of 1,1'-disubstituted ferrocene compounds of the type [(η5-C5H4(CH2)nOC6H4C6H4CN]2Fe (3a-d, n = 5, 6, 8, 11) incorporating a variable length alkyloxy cyanobiphenyl unit has been prepared and their mesomorphic properties have been investigated. Compounds 3b, c and d exhibit a thermotropic smectic C phase and 3c also exhibits a monotropic smectic A phase over a fairly wide range near ambient temperature.