Conventional Study on Novel Dicationic Ionic Liquid Inclusion with β-Cyclodextrin

International Journal of Molecular Sciences

Sharifah Mohamad¹  Hemavathy Surikumaran¹  Muggundha Raoov¹  Tilagam Marimuthu¹  Kumuthini Chandrasekaram¹ 

[1] University of Malaya Centre for Ionic Liquids, Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails:

关键词: dicationic ionic liquid;    cyclodextrin;    inclusion complex;   

DOI  :  10.3390/ijms12096329

来源: mdpi

【 摘 要 】

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 (¹H) NMR and 2D (¹H–¹H) 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 × 10⁵ mol&⁻² L². 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.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.