SERS signal of selected
reporters on GNS. (a) SERS spectra of the
15 selected Raman reporters. (b) Correlation matrix built from the
SERS spectra. The color bar indicates the level of overlapping signals,
where 1 (yellow) means 100% overlap and 0 (dark blue) means 0% overlap.
Name legend: brilliant cresyl blue (BCB), crystal violet (CV), methylene
blue (MB), malachite green isocyanate (MG), methylene green (MEG),
neutral red (NR), rose bengal (RB), rhodamine 6G (R6G), victoria blue
(VB), 4-aminothiophenol (ATP), BPE, MBA, 3,5-dichlorobenzenthiol (DCT),
pentachlorothiophenol (PCTP), and 5,5′-dithiobis(2-nitrobenzoic
acid) (DTNB).