In this work we have considered the ability of nanoscale molecular surfaces (around 2 nm in width) in trapping excess electrons. As previously reported, we suggested that molecular surfaces with hydrogen bonding networks (consisting of OH groups) on one side of the surface and hydrogen atoms on the opposite side were capable of forming stable dipole-bound anions. The increased dipole moments generated by the OH groups coupled to the partial positive charge of the hydrogen atoms creates charge pockets that are can trap excess electrons. We have extended the size of the surface to study the effect of electron localization on molecular surfaces. (C) 2007 Published by Elsevier B.V.