Fig. 7.

Fluorescence emission spectra of (a)–(c) BrCy106-nEGs, BrCy111-nEGs, and BrCy112-nEGs in response to photoexcitation at $750\pm 2.5\mathrm{nm}$ and (d) ICG-nEGs in response of photoexcitation at $780\pm 2.5\mathrm{nm}$. (e) Normalized spectrally integrated fluorescence values ($\sigma$) for various BrCy- and ICG-nEGs. (f) Fluorescence quantum yield ($\varphi$) for various RBC nano-ghosts fabricated at different concentrations of the dyes relative to that of free ICG in 1X PBS at 779 nm.