期刊
CHEMICAL PHYSICS LETTERS
卷 658, 期 -, 页码 43-50出版社
ELSEVIER
DOI: 10.1016/j.cplett.2016.06.017
关键词
Inclusion complex; Benzyltrialkylammonium chloride; beta-Cyclodextrin; CMC; Surface tension; Conductance; NMR; Association constant
资金
- Special Assistance Scheme, Department of Chemistry, NBU under the University Grants Commission, New Delhi [540/27/DRS/2007, SAP-1]
- University Grants Commission, New Delhi, Government of India [F.4-10/2010 (BSR)]
Host-guest inclusion complexes of three sequential cationic room temperature surface active ionic liquids, benzyltrialkylammonium chloride [(C6H5CH2)N(CnH2n+1)3Cl; where n = 1,2,4] with beta-cyclodextrin in aqueous media have been studied using surface tension, conductance and NMR spectroscopy. All the studies have suggested that the hydrophobic benzyl group of ionic liquids is encapsulated inside into the cavity of beta-cyclodextrin and played a crucial role in supporting the formation of inclusion complexes. The variation of the thermodynamic parameters with guest size, shape is used to draw inferences about contributions to the overall binding by means of the driving forces, viz., hydrophobic effect, steric hindrance, van der Waal force, and electrostatic force. (C) 2016 Elsevier B.V. All rights reserved.
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