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|Title:||Synthesis and miscibility studies of some phenyl cinnamoyloxybenzoate derivatives|
|Authors:||Urs, Subramanya Raj M.|
Krishna Prasad, S.
|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.|
|Copyright:||1983 OPA (Overseas Publishers Association) N.V.|
|Appears in Collections:||Research Papers (SCM)|
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|1983 MCLC V103 p235.pdf|
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