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(A and B) TEM image (scale bar corresponds to 5 nm) and size distribution of bio CFQD® nanoparticles from TEM, (C) hydrodynamic size of surface-treated bio CFQD® nanoparticles using DLS, (D) Photoluminescence emission spectrum of an aqueous solution of water soluble bio CFQD® nanoparticles (1 μM) using excitation at 405 nm.
