Molecular recognition by pillararenes: evidence for simultaneous electrostatic and hydrophobic interactions
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/2938
EDITED VERSION: https://www.mdpi.com/1999-4923/14/1/60
DOCUMENT TYPE: article
The formation of inclusion complexes between alkylsulfonate guests and a cationic pillararene receptor in water was investigated by NMR and ITC techniques. The results show the formation of host-guest complexes stabilized by electrostatic interactions and hydrophobic effects with binding constants of up to 107 M−1 for the guest with higher hydrophobic character. Structurally, the alkyl chain of the guest is included in the hydrophobic aromatic cavity of the macrocycle while the sulfonate groups are held in the multicationic portal by ionic interactions.
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