Keywords: FA; Folic Acid; CMCS; O-carboxymethylchitosan; CS; Chitosan; DDS; Drug Delivery System; DOX; Doxorubicin; NPCS; N -palmitoyl chitosan; Ox-SWNTs; Oxidized Single Walled Carbon Nanotubes; PBS; Phosphate Buffer Saline; SWNTs; Single Walled Carbon Nanotubes;