Abstract

The effect of graphene oxide (GO) and nanodiamond (ND) is investigated on the spectral properties of doxorubicin (DOX) fluorescence emissions in the form of ($\mathrm{DOX}+\mathrm{GO}$) and ($\mathrm{DOX}+\mathrm{ND}$) biomaterials. It is shown that carbon nanostructure additives lead to sensible blueshifts, due to their optical properties and surface functionality. The quenching coefficient $K_{\mathrm{ND}}$ is obtained to be $K_{\mathrm{ND}}=0.043{(\mathrm{\mu g}/\mathrm{ml})}^{-1}$ and $K_{\mathrm{GO}}=0.342{(\mathrm{\mu g}/\mathrm{ml})}^{-1}$ in DOX solutions. In general, Stern–Volmer attests that excited ($\mathrm{DOX}+\mathrm{GO}$) strongly quenches with respect to that of ($\mathrm{DOX}+\mathrm{ND}$) regarding its privileged bonding affinity.

© 2017 Optical Society of America

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