Figure 5.
SEM images of NP (A) 6a (Boc-Phe-Phe-tz-AN(Boc)2-aeg-OEt), (B) 6b (Boc-Phe-Phe-tz-ANHCbz-aeg-OEt), (C) 6c (Boc-Phe-Phe-tz-GNHiBu-aeg-OEt), and (D) 6d (Boc-Phe-Phe-tz-T-aeg-OEt).
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