Figure 4.

Fluorescence emission spectra. (a) Fluorescence emission spectra of tryptophan residues of pure BSA, BSA-AuCl4, and BSA-Au nanocomplexes (λex = 280 nm). (b) Fluorescence emission spectra of BSA-Au nanocomplexes in different concentrations of BSA solution (λex = 470 nm).

Lin et al. Nanoscale Research Letters 2013 8:170   doi:10.1186/1556-276X-8-170
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