Chemical structure of (A) the designed peptide with cholesterol, glycine, arginine, and TAT; and (C) cationic amphiphilic polycarbonate. (B) and (D) are the formation of micelles of (A) and (C), respectively, simulated through molecular modeling using Materials Studio software. Reprinted with permission from [76] and [80]. Copyright 2009, Nature Publishing Group [76]. Copyright 2011, Nature Publishing Group [80].