* Corresponding authors

^a Surfactant and Colloid Group, Department of Chemistry, The University of Hull, UK
E-mail: V.N.Paunov@hull.ac.uk
Fax: +44 (0)1482 466410
Tel: +44 (0)1482 465220

^b Unilever R&D Vlaardingen, Olivier van Noortlaan 120, Vlaardingen, The Netherlands
E-mail: Simeon.Stoyanov@Unilever.com
Fax: +31 104606747
Tel: +31 104606221

^c Chemistry Department, King Saud University, P. O. Box 2455, Riyadh, Kingdom of Saudi Arabia