Abstract
Charge reversal as an extreme case of charge compensation is directly observed by capillary electrophoresis for a negatively charged peptide in aqueous solutions of trivalent cations. Atomistic and coarse-grained simulations provide molecular interpretation of this effect showing that it is largely of electrostatic origin with a minor contribution of chemical specificity of the salt ions.
- Received 18 January 2012
DOI:https://doi.org/10.1103/PhysRevLett.108.186101
© 2012 American Physical Society