Ionic liquid crystals based on a triscatecholatotitanate( iv ) complex associated with imidazolium counter-ions
Abstract
The triscatecholatotitanate(IV) anion (Ti(Cat) 3 2-) interacts with various imidazolium cations (2-7) to generate salts (A-F) where the titanium dianion complex is associated with two imidazolium monocations.
Two types of cation form these salts; species 2-4 bear methoxy groups, whereas one, two or three dodecyl linear alkyl chains are incorporated within 5, 6 and 7, respectively. These salts were characterized in solution by 1 H NMR and the crystal structure of salt C containing the complex Ti(Cat) 3 2-with two imidazolium cations substituted by two methoxy groups (3) was established. Differential scanning calorimetry (DSC) measurements and polarized optical microscopy (POM) observations attest to the thermotropic liquid crystal behavior of the salts, where long alkyl chains are present in salts containing imidazolium cations (5-7). The data extracted from the small-and wide-angle X-ray scattering (SWAXS) analysis of salts 5-7 enable the proposal of the supramolecular organisations of the three mesophases. This organisation is dependent on the number of alkyl chains that compose the imidazolium cations.
Related
- Covalent Insertion of a Mn(Salen) Type Complex in Cross-Linked Protein Crystals: Design of an Enantioselective Artificial Epoxidase
- Thermodynamics and Accurate Solubilities of Lithium and Sodium Salts in Imidazolium-Based Ionic Liquids
- Comparative vibrational study between two imidazolium zwitterionic ionic liquids by FTIR-ATR and Raman spectroscopies
- Alkyl Imidazolium Cation-Supported Poly(terphenyl- co -fluorene isatin) Anion Exchange Membrane for Anion Exchange Membrane Fuel Cells
- Mechanism and Application of Imidazolium Derivatives as a Bifunctional Additive for Void-free Blind via Copper Filling
BibTeX
@article{barloy2026ionic,
title = {{Ionic liquid crystals based on a triscatecholatotitanate( iv ) complex associated with imidazolium counter-ions}},
author = {Laurent Barloy and Benoît Heinrich and Nicolas del Giudice and Matthieu Scarpi-Luttenauer and Laurent Douce and Pierre Mobian},
journal = {Dalton Transactions},
year = {2026},
month = jul,
doi = {10.1039/d6dt00695g},
url = {https://hal.science/hal-05762163v1},
note = {CC BY-NC 4.0},
}
RIS
TY - JOUR
TI - Ionic liquid crystals based on a triscatecholatotitanate( iv ) complex associated with imidazolium counter-ions
AU - Laurent Barloy
AU - Benoît Heinrich
AU - Nicolas del Giudice
AU - Matthieu Scarpi-Luttenauer
AU - Laurent Douce
AU - Pierre Mobian
PY - 2026
DA - 2026/07/16
JO - Dalton Transactions
DO - 10.1039/d6dt00695g
UR - https://hal.science/hal-05762163v1
AB - The triscatecholatotitanate(IV) anion (Ti(Cat) 3 2-) interacts with various imidazolium cations (2-7) to generate salts (A-F) where the titanium dianion complex is associated with two imidazolium monocations. Two types of cation form these salts; species 2-4 bear methoxy groups, whereas one, two or three dodecyl linear alkyl chains are incorporated within 5, 6 and 7, respectively. These salts were characterized in solution by 1 H NMR and the crystal structure of salt C containing the complex Ti(Cat) 3 2-with two imidazolium cations substituted by two methoxy groups (3) was established. Differential scanning calorimetry (DSC) measurements and polarized optical microscopy (POM) observations attest to the thermotropic liquid crystal behavior of the salts, where long alkyl chains are present in salts containing imidazolium cations (5-7). The data extracted from the small-and wide-angle X-ray scattering (SWAXS) analysis of salts 5-7 enable the proposal of the supramolecular organisations of the three mesophases. This organisation is dependent on the number of alkyl chains that compose the imidazolium cations.
SN - 1477-9226
SN - 1477-9234
ER -