America (97%), ethanol from Panreac S.A, poly(ethylene glycol)-amine
(PEG-NH2) from Laysan Bio (MW = 5000 and 20 000),
and phosphate-buffered saline (PBS) from Gibco. All other solvents
and reagents were purchased from Sigma-Aldrich and used as received
without purification: iron(III) chloride hexahydrate (99%), oleic
acid (90%), 1-octadecene (ODE) (90%), dibenzyl ether (DBE) (98%),
chloroform (>99%), tetrahydrofuran (>99.9%), hexane (99%), and
poly(maleic
anhydride-alt-1-octadecene) (PMAO) (MW = 30 000–50 000
Da).