%0 Journal Article
%T Ionic Liquid Crystals Based on Mesitylene-Containing Bis- and Trisimidazolium Salts
%+ Department of Chemistry and NMR Service
%+ NMR Service
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%+ Chimie moléculaire et organisation du solide (CMOS)
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM)
%A Trilla, Montserrat
%A Pleixats, Roser
%A Parella, Teodor
%A Blanc, Christophe
%A Dieudonné, Philippe
%A Guari, Yannick
%A Wong Chi Man, Michel
%< avec comité de lecture
%@ 0743-7463
%J Langmuir
%I American Chemical Society
%V 24
%N 1
%P 259-265
%8 2008
%D 2008
%R 10.1021/la702305t
%Z Chemical Sciences/Material chemistryJournal articles
%X The synthesis of novel ionic liquid crystals (ILCs) based on bis- and trisimidazolium salts (I-, BF4-, and [N(SO2CF3)2]-) bearing hydrophobic hexadecyl chains and a bridging mesitylene moiety is reported. The study of their mesomorphic properties is presented, including the characterization of the Smectic A phase by differential scanning calorimetry and polarized optical microscopy. A detailed powder X-ray diffraction (p-XRD) study as a function of temperature confirmed that cooling gives rise to a glass transition from the liquid-crystalline smectic A phase to a metastable lamellar phase. In addition, in the case of bisimidazolium iodide, the ability of these molecules to form self-aggregates in solution has been demonstrated by diffusion nuclear magnetic resonance (NMR) experiments. --------------------------------------------------------------------------------
%G English
%L hal-00319583
%U https://hal.science/hal-00319583
%~ CNRS
%~ UNIV-MONTP1
%~ UNIV-MONTP2
%~ ENSC-MONTPELLIER
%~ ICG
%~ LCVN
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ UM1-UM2
%~ TEST2-HALCNRS