Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 16172–16180 www.materialstoday.com/proceedings SCICON 16 *Correspondence author. E-mail address: ts_boopathi@cb.amrita.edu 2214-7853 © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Advanced Materials (SCICON ‘16). Synthesis and characterization of heterocyclic nonlinear mesogen T S Boopathi a * S Senthil b a Dept of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, Amrita University, India b Department of chemistry, Government Arts College, Salem, India Abstract A series of non linear schiffs base based liquid crystalline compounds differing in their alkyl chain in the terminal position of 1,4- disubstituted triazole core unit were synthesized. All the compounds and their intermediates are in accordance with FTIR, 1 HNMR and 13 CNMR spectroscopy. The thermal property and mesogenic behavior are characterized by HOPM and DSC studies which show that all the compounds exhibit liquid crystalline properties with nematic texture. The increase in terminal chain length aids the lamellar arrangement favoring smectic phase. © 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Advanced Materials (SCICON ‘16). Keywords: Liquid crystal;1,3-dipolar cycloaddition; click chemistry; triazole ; schiffs base; mesophase; smectic; nematic. 1. Introduction During the past decades, research is focused towards the studies on mesomorphic properties of liquid crystals, owing to their extensive application in hi tech areas like material chemistry, drug discovery, supramolecular chemistry etc., [1,2]. Several reports have been reported in the literature on liquid crystals containing five membered heterocyclic rings, because the incorporation of hetero atoms has a strong influence on mesomorphic behavior [3]. As most of the hetero atoms are more polarisable than carbon, the incorporation of them in rings results in large change of liquid crystalline phases, polarity, geometry, luminescence and other molecular properties. [4,5,6]. In general, the five membered heterocyclic rings are of great importance, owing to its ability to generate lateral and longitudinal dipoles necessary for liquid crystalline phases in addition with molecular shape[7]. In the academic perception of technological application, heterocyclic compounds containing more number of nitrogen atoms have gained more importance [8]. For instance N-heterocyclic compounds like [1,2,3]-triazoles derivatives have great potential as functional materials in material chemistry[9,10].