
Keywords: راندمان بارگیری مواد مخدر; nGO; nano graphene oxide; DA; dopamine; MTX; Methotrexate; EPR; enhanced permeation and retention; EDC; N-(3-dimethylaminopropyl-N-ethylcarbodiimide) hydrochloride; NHS; N-hydroxysuccinimide; FT-IR; Fourier transform infrared; AFM; atomic force microscopy