82344-16-9Relevant academic research and scientific papers
Properties of the Liquid Crystals formed by Certain 2-p-Alkoxybenzylideneamino-9,10-dihydrophenanthrenes
Byron, David J.,Harwood, David J.,Wilson, Robert C.
, p. 197 - 200 (2007/10/02)
The liquid crystal transition temperatures of 11 2-p-alkoxybenzylideneamino-9,10-dihydrophenanthrenes are reported and discussed.Graphical presentation shows a fall to a minimum followed by a rise to a maximum for the N-I transition temperatures of the early homologues and lack of convergence of the rising SA-N and the falling N-I transition temperature curves for the higher homologues, i.e. there is persistence of nematic phases to a late stage in the homologous series.This behaviour is consistent with very low lateral cohesive forces operating throughout the homologous series.
The 9,10-Dihydrophenanthrene Structure as a Source of Liquid Crystals: Mesogenic Behaviour and Spectroscopic Properties of 2-Benzylideneamino-9,10-dihydrophenanthrenes
Behnam, Basil A.,Hall, D. Muriel
, p. 465 - 472 (2007/10/02)
13 Azomethines have been prepared from 2-amino-9,10-dihydrophenanthrene by reaction with aromatic aldehydes.Those with p-alkoxy, p-cyano or p-phenyl substituents in the aldehydic ring have a nematic mesophase.U.v. spectra, 1H and 13C n.m.r. spectra, and mass spectra of the series are discussed.Mass spectra show that ortho-substituents in the aldehydic ring substantially modify the fragmentation pattern.
