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Synthesis and mesomorphic properties of 1‐(4′‐ethyl biphenylyl) 2‐(4‐alkoxy‐2,3,5,6‐tetrafluorophenyl) acetylenes
Author(s) -
YueLian Xu,
HuiYong Yin,
WeiLi Wang,
Qi Chen,
JianXun Wen
Publication year - 1996
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19960140112
Subject(s) - chemistry , alkoxy group , mesogen , liquid crystal , crystallography , organic chemistry , stereochemistry , liquid crystalline , alkyl , phase (matter) , materials science , optoelectronics
A series of l‐(4′‐ethylbiphenylyl) 2‐(4‐alkoxy‐2,3,5,6‐tetrafluorophenyl)acetylenes and their nonfluorinated analogues have been prepared. The polarizing microscope observation shows that the fluorinated target compounds exhibit enantiotropic nematic phases, whereas the nonfluorinated analogues show complicated DSC results. The effect of structure modification of the core on mesogenic phases was discussed by comparing the data of fluorinated target compounds with those of corresponding nonfluorinated analogues.