Fig. 12.
(a) 1+ bradykinin (b) charge inverted to 1- using PAMAM dendrimer anions and then (c) charge inverted back to the positive polarity using DAB dendrimer cations. The result is a net increase in charge of the peptide from the +1 to the +2 charge state. Reprinted with permission from ref. 79. Copyright 2003 American Chemical Society.