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. Author manuscript; available in PMC: 2016 Apr 12.
Published in final edited form as: Biomacromolecules. 2015 Dec 17;17(1):301–313. doi: 10.1021/acs.biomac.5b01419

Figure 2.

Figure 2

Synthesis scheme of mPEG-PCC-g-FC-g-DC (A); chemical structure of mPEG-PCC-g-GEM-g-DC (B). Reagents: (i) KOH, DMF, benzyl bromide, 100 °C, 15 h; (ii) triphosgene, pyridine, CH2Cl2, −78 to 0 °C; (iii) DBU, CH2Cl2, methoxy-PEG5000-OH, RT, 3 h; (iv) 10% Pd/C, H2, ethyl acetate, RT, 40 psi, 3 h; (v) EDC, HOBT, DIPEA, DMF, dodecanol, fluorescein cadaverine (FC), RT, 48 h.