Tris(N-salicylideneanilines) [TSANs] exhibiting a room temperature columnar mesophase: synthesis and characterization
作者:C.V. Yelamaggad、A.S. Achalkumar
DOI:10.1016/j.tetlet.2006.07.102
日期:2006.9
Tris(N-salicylideneaniline) derivatives with peripheral branched alkyl chains, existing in their C-3h and C-s symmetric ketoenamine tautomeric forms, synthesized by condensing alkoxyanilines with 1,3,5-triformylphloroglucinol, display a technologically important columnar liquid crystal phase over a wide thermal interval (similar to 160 degrees C) well below and above room temperature, as established by optical and calorimetric studies. (c) 2006 Elsevier Ltd. All rights reserved.