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|Title: ||Synthesis and miscibility studies of some phenyl cinnamoyloxybenzoate derivatives|
|Authors: ||Urs, M. Subramanya Raj|
Krishna Prasad, S.
|Issue Date: ||Dec-1983 |
|Publisher: ||Gordon and Breach Science Publishers.|
|Citation: ||Molecular Crystals and Liquid Crystals, 1983, Vol.103, p235-241|
|Abstract: ||Some members of the homologous series, 4-cyanophenyl-3'-methyl-4'(4"-n-alkyloxycinnamoyloxy) benzoate and 4-cyanophenyl-3'-methyl-4'(4"-n-alkyloxy-agr-methyl cinnamoyloxy)benzoate have been prepared. The transitions were studied by hot stage microscopy and differential scanning calorimetry. The undecyloxy- and dodecyloxy-derivatives exhibit a reentrant nematic phase at atmospheric pressure. The effect of a lateral substituent on the reentrant phenomenon in these compounds is discussed.
A detailed study of the phase diagrams of binary mixtures of each of these compounds exhibiting a reentrant phase with 4-cyanophenyl-3'-methyl-4'(4"-n-decylbenzoyloxy)benzoate, a compound exhibiting no reentrant phase has been carried out. Interestingly, in three cases, the binary mixtures exhibit stable enantiotropic reentrant behaviour over a range of composition though the pure compounds themselves are monotropic reentrants.|
|Description: ||Restricted Access. Proceedings of the 9th international liquid crystal conference, Bangalore, 1982.|
|Alternative Location: ||http://dx.doi.org/10.1080/00268948308071055|
|Copyright: ||1983 OPA (Overseas Publishers Association) N.V.|
|Appears in Collections:||Research Papers (SCM)|
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