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. 2018 Aug 13;9:3217. doi: 10.1038/s41467-018-05568-9

Fig. 5.

Fig. 5

NIR fluorescence properties of cyclo-WW + Zn(II) in DMSO. a TEM image of the self-assembled nanospheres. Scale bar: 300 nm. b Emission vs. excitation profile of the nanospheres. c Extracted emission spectra of the nanospheres. d Visible to NIR photos of cyclo-WW + Zn(II) DMSO solution under various wavelengths. e Photobleaching and (f) photostability characterization of the cyclo-dipeptide nanoparticles (abbreviated as cPNPs) and of the fluorescent dyes ICG and Cy5.5, as controls