Mechanism of the fast exchange between bound and free guests in cucurbit[7]uril-guest systems

Phys Chem Chem Phys. 2011 Mar 7;13(9):3638-41. doi: 10.1039/c0cp02349c. Epub 2011 Jan 12.

Abstract

The fast exchange is found to be due to the mismatch between the hydrophobic interaction inside the CB[7] cavity and the ion-dipole/hydrogen-bonding interactions in the port region of the CB[7]. This mismatch also induces the multi-step separation process between guest and CB[7] molecules, as elucidated by molecular dynamics simulation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bridged-Ring Compounds / chemistry*
  • Calorimetry
  • Hydrogen Bonding
  • Hydrophobic and Hydrophilic Interactions
  • Imidazoles / chemistry*
  • Ions / chemistry
  • Magnetic Resonance Spectroscopy
  • Molecular Conformation
  • Molecular Dynamics Simulation

Substances

  • Bridged-Ring Compounds
  • Imidazoles
  • Ions
  • cucurbit(7)uril