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Updated: Dec 25, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Multi-spectroscopic investigation on the inclusion complexation of α-cyclodextrin with long chain ionic liquid
Manoj Kumar Banjare1, Kamalakanta Behera2, Ramesh Kumar Banjare3
1School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, CG, 492010, India; MATS School of Sciences, MATS University, Pagaria Complex, Pandri, Raipur, CG, 492004, India.
Abstract:
Host-guest interaction of ionic liquid (IL) 1-decyl-3-methylimidazolium tetrafluoroborate [Dmim][BF4] within α-cyclodextrin (α-CD) has been studied by different spectroscopic techniques and our investigated system is significant in the field of supramolecular chemistry and medicine. Benesi-Hildebrand correlation is used to study the stoichiometry of the host-guest complexation. Here concurrence with FT-IR and dynamic light scattering (DLS) results, it is shown that α-CD interacts with [Dmim][BF4], induces compositional and structural changes. Characterization of the [Dmim][BF4]-α-CD inclusion complex (IC) by 1H NMR spectroscopy provided information about the complexation among the [Dmim][BF4] and α-CD molecules and the structure of the ICs. 1H NMR results confirm the formation of inclusion complex (IC) while UV-vis spectroscopy, DLS and FTIR studies show development of IC with 1:1 stoichiometry. The present study can be highly applicable in the fields of pharmaceutical science, supra-molecular chemistry and material science.
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