Conventional study on novel dicationic ionic liquid inclusion with β-cyclodextrin.
This study focuses on the synthesis and characterization of the inclusion complex of β-Cyclodextrin (β-CD) with dicationic ionic liquid, 3,3'-(1,4-Phenylenebis [methylene]) bis(1-methyl-1H-imidazol-3-ium) di(bromide) (PhenmimBr). The inclusion complex was prepared at room temperature utilizing conventional kneading technique. Proton ((1)H) NMR and 2D ((1)H-(1)H) COSY NMR were the primary characterization tools employed to verify the formation of the inclusion complex. COSY spectra showed strong correlations between protons of imidazolium and protons of β-CD which indicates that the imidazolium ring of PhenmimBr has entered the cavity of β-CD. UV absorption indicated that β-CD reacts with PhenmimBr to form a 2:1 β-CD-PhenmimBr complex with an apparent formation constant of 2.61 × 10(5) mol&(-2) L(2). Other characterization studies such as UV, FT-IR, XRD, TGA, DSC and SEM studies were also used to further support the formation of the β-CD-PhenmimBr inclusion complex.
University of Malaya Centre for Ionic Liquids, Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails:  hems8620@yahoo.com  (H.S.);  vainavi38@gmail.com  (T.M.);  kumuthinic@um.edu.my  (K.C.);  puva@um.edu.my  (P.S.).
Sharifah
S
Mohamad
Hemavathy
H
Surikumaran
Muggundha
M
Raoov
Tilagam
T
Marimuthu
Kumuthini
K
Chandrasekaram
Puvaneswary
P
Subramaniam
D002152:Calorimetry, Differential Scanning; D002413:Cations, Divalent / Q000737:chemistry; D060326:Chemistry Techniques, Synthetic / Q000379:methods; D052578:Ionic Liquids / Q000737:chemistry*; D007700:Kinetics; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D015394:Molecular Structure; D066244:Proton Magnetic Resonance Spectroscopy; D013053:Spectrophotometry; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction; D047392:beta-Cyclodextrins / Q000737:chemistry*
D002413:Cations, Divalent; D052578:Ionic Liquids; D046911:Macromolecular Substances; D047392:beta-Cyclodextrins