Fig. 1From: A superior bright NIR luminescent nanoparticle preparation and indicating calcium signaling detection in cells and small animalsa Absorption spectra of AuNRs as CTAB-coated, PEG-coated, and ICG–HSA conjugate-bound in a 10 mM PBS buffer solution. b Ensemble emission spectra from the ICG dyes as free, conjugates in HSA, and complexes with AuNRs in a 10 mM PBS buffer solutionBack to article page