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. 2012 Jun 12;2(2):187–205. doi: 10.3390/nano2020187

Figure 3.

Figure 3

Fluorescence emission spectra of aqueous suspension of ONC: (a) alone, and coupled with: (b) Trp-EMP, (c) Trp and (d) Trp-WRF. The insert shows the emission spectrum of an aqueous solution of Trp. The excitation wavelength was 295 nm.