Fig. 2
From: Quantum dots as targeted doxorubicin drug delivery nanosystems in human lung cancer cells
Representative Fourier transformation infrared spectra of the QD nanocrystals (a), targeting ligand and drug (b), QD–FA nanocarriers (c), and QD–FA–DOX nanoconjugates (d). The spectra were standardized by a background spectrum determined on the bare KBr substrate. QD Ag–In–Zn–S nanocrystals modified with: 11-mercaptoundecanoic acid (MUA), Cys L-cysteine, LA lipoic acid, FA folic acid, DOX doxorubicin