Fig 2. Structure of synthesized polymers and the fluorescent lipid.
(A) Structure of the synthesized cyclic iRGD peptide conjugated to hexynoic acid, (B) PEG1900-S-S-PLA6000, (C) PLA6000-PEG1900-iRGD polymer, and (D) 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine-N-lissamine rhodamine B sulfonyl ammonium salt (commercially available).