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Abstract
A novel homologous series of esters was synthesized and studied with a view to understanding and establishing the effects of molecular structure on liquid crystal (LC) properties. The series consists of 11 members, and all exhibit enantiotropically the smectogenic mesophase. The nematogenic mesophase is totally absent. The textures of smectic phases are of the type A or C. The Sm-I transition curve of the phase diagram behaves in abnormal manner. The average Sm-I thermal stability is 124.53°C with mesomorphic phase length between 6.5°C and 52.3°C and is of a middle-ordered melting type. LC properties of the novel series are compared with a structurally similar other known series. Analytical and spectral data of the homologous match the molecular structure.
Acknowledgments
Authors acknowledge thanks to the Principal, Head of chemistry department, Dr. N.N. Vyas including Dr. V.R. Patel and Dr. M.L. Chauhan, P.T. Arts and Science College, Godhara, for providing microscopic facility and other cooperation as and when needed. Authors also thankful to the Green Circle Inc. laboratory, Vadodara, and our R and D lab for extending their valuable support for services related to synthesis of novel products and moral support. The authors are highly obliged to Punjab University, Chandigarh, for analytical services.