Structure-function relationships in liquid-crystalline halogen-bonded complexes.
New liquid-crystalline materials were prepared by self-assembly driven by halogen bonding between a range of 4-alkoxystilbazoles, 4-alkyl-, and 4-alkoxy-substituted pyridines as halogen-bonding acceptors, and substituted derivatives of 4-iodotetrafluorophenyl as halogen-bonding donors. Despite the fact that the starting materials are not mesomorphic, the dimeric, halogen-bonded complexes obtained exhibited nematic and SmA phases, depending on the length of the alkyl chains present on the components. The modularity of this approach also led to new chiral mesogens starting from non-mesomorphic chiral compounds.
Bruce
Duncan W
DW
Department of Chemistry, University of York, Heslington, York YO10 5DD, UK. db519@york.ac.uk
Metrangolo
Pierangelo
P
Meyer
Franck
F
Pilati
Tullio
T
Präsang
Carsten
C
Resnati
Giuseppe
G
Terraneo
Giancarlo
G
Wainwright
Stephen G
SG
Whitwood
Adrian C
AC
D003460:Crystallization; D018360:Crystallography, X-Ray; D006219:Halogens / Q000737:chemistry*; D050866:Liquid Crystals / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D013267:Stilbenes / Q000737:chemistry; D013329:Structure-Activity Relationship
D006219:Halogens; D011108:Polymers; D013267:Stilbenes