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UV–visible spectra of NO-conjugated AuNPs. AuNP was conjugated with different NO donors SIN-1 (Au-SIN-1), SNAP (Au-SNAP), glyco-SNAP (Au-glyco-SNAP) and SNOG (Au-SNOG). Change of absorption spectra of AuNPs as well as change of λmax (towards red shift) upon the addition of SIN-1, SNAP, glyco-SNAP and SNOG indicates the association of NO donor molecules to AuNPs. Graphical representation are from three independent experiments, n = 3.
