94817-00-2Relevant academic research and scientific papers
Properties of the Liquid Crystals formed by Certain 4-Alkoxy-N-(9-oxofluoren-2-ylmethylene)anilines
Bullock, Philip J.,Byron, David J.,Harwood, David J.,Wilson, Robert C.,Woodward, Adrian M.
, p. 2121 - 2123 (2007/10/02)
The liquid crystal transition temperatures of 1 3 4-alkoxy-N-(9-oxofluoren-2-ylmethylene)anilines are reported and discussed.The series gives a transition temperature plot of a similar type to that of the 2-p-alkoxybenzylideneaminofluorenones (in which the -CH=N- linkage is reversed), the N-I transition temperatures showing minima then maxima for the early homologues, but smectic properties do not occur until a late stage in the homologous series.Differences in liquid crystal thermal stability between the two series of azomethines of 9-oxofluorene are compared with the corresponding values for the 9,10-dihydrophenanthrene and biphenyl derivatives.
