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Abstract
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Graphene quantum dots (GQDs), a kind of carbon based quantum dots, are small pieces
of graphene sheets with lateral sizes of less than 20 nm and thicknesses of about 0.4-2.0 nm
[1]. Graphene quantum dots (GQDs) have attracted increasing attention due to their unique
properties such as high water solubility, photoluminescence activity, good biocompatibility,
physical, chemical, and electrical properties which makes them appropriate candidates for use
in a variety of bioapplications, sensors, and photocatalysts [2]. GQDs possess lower
cytotoxicity, large surface area and potential for surface functionalization that bring about as
more effective drug loading carrier. Furthermore, the recent developments are carried on the
combination of GQDs with metallic or polymeric nanomaterials for imaging and drug
delivery aspects [3]. In this study, we synthesized iron oxide nanoparticles modified with
GQD / Cu-Ni graphene nanocomposites and tested as a drug nanocarrier. In this study, copper
(Cu) and nickel (Ni) metals with excellent magnetic properties and improved nanocarrier
performance played a significant role. In synthesized nanocarriers, the presence of magnetic
nanoparticles provided the possibility of easy and fast separation and detection.
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