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Olefin Cross‐Metathesis: a Versatile Synthetic Reaction for the Design of Janus Liquid Crystals
Author(s) -
Trinh Thi Minh Nguyet,
Nguyen Thanh Tung,
Kopp Cyril,
Pieper Pauline,
Russo Virginie,
Heinrich Benoît,
Donnio Bertrand,
Nguyen Thi Le Anh,
Deschenaux Robert
Publication year - 2015
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201500754
Subject(s) - thermotropic crystal , liquid crystal , chemistry , olefin fiber , janus , olefin metathesis , grubbs' catalyst , salt metathesis reaction , metathesis , crystallography , organic chemistry , catalysis , liquid crystalline , phase (matter) , nanotechnology , materials science , polymerization , polymer , optoelectronics
The olefin cross‐metathesis reaction using the second‐generation Grubbs catalyst was employed to prepare non‐symmetrical thermotropic liquid crystals from various mesomorphic or nonmesomorphic type I and type II olefinic constructs, including linear, chiral, dendritic and ferrocenyl olefins. Smectic C, smectic A and nematic phases, as well as chiral smectic A and chiral nematic phases were observed in agreement with the structure and nature of the mesogens. The olefin cross‐metathesis proved to be a valuable chemical reaction in designing dimeric and Janus ‐like thermotropic liquid crystals built from two different molecular entities.