101914-02-7Relevant articles and documents
Synthesis and Mesogenic Properties of N-n-alkyl-N'-(4-n-Pentyloxyphenyl)-Piperazines
Zuniga, H.,Bartulin, J.,Ramirez, A.,Muller, H.,Taylor, T. R.
, p. 131 - 140 (2007/10/02)
The N-n-alkyl-N'-(4-n-pentyloxyphenyl)-piperazines (4) exhibit ordered smectic phases at temperatures below 100 deg C.For 3, 4, 5 and 6 carbons in the alkyl chain, two smectic phases are present and for 7, 8 and 9 carbons only one smectic phase is present.The ΔH values for 4, 5, 6 and 7 carbons are anomalous.From optical and X-ray data, the smectic phases are identified as probably smectic E and B phases.