Schematic Illustration of the Preparation of a TPGS-NH2 Segments, b TPGS-FA and c the formation of TPGS-FA/NC complexesa. aPTSC, EDC and NHS represent p-Toluenesulfonyl chloride, N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide ester, respectively