Fig. 5 | Nature Communications

Fig. 5

From: Bioconjugation strategy for cell surface labelling with gold nanostructures designed for highly localized pH measurement

Fig. 5

Interpretation of the SERS intensity bands collected from the pH nanosensor. Representative SERS spectra of a 4-MBA/HPDP-B (ratio 1000/1), b HPDP-B, and c thiophenol (TP) conjugated AuNP. In b and c the HPDP-B and TP concentrations were equal to the concentration of 4-MBA used in a. In a the bands of the spectrum were fitted using Voigtian functions and the assignments of 4-MBA and TP vibration modes, which enabled mathematical deconvolution of the intensities of bands A + B, C + H and D + I

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