Figure 2From: Detection of residual rifampicin in urine via fluorescence quenching of gold nanoclusters on paper a Absorption spectra of BSA-Au NCs (0.1× dilution) in the absence and presence of 10 µM rifampicin. b Fluorescence emission spectra (excitation wavelength at 480 nm) of BSA-Au NCs (0.1× dilution) in the absence and presence of 10 µM rifampicin.Back to article page