Fig. 5: Investigation of the etching of AuNRs mediated by TMB2+. | npj Science of Food

Fig. 5: Investigation of the etching of AuNRs mediated by TMB2+.

From: Target-inhibited MCOF-Apt-AuNPs self-assembly for multicolor colorimetric detection of Salmonella Typhimurium

Fig. 5

a UV–Vis absorption spectra and photographs of AuNRs etching system with different concentrations of TMB2+. Representative TEM images of AuNRs during the etching process after incubation with S. Typhimurium at b 108, c 105, d 102 CFU mL−1. The insets showed the colors of the corresponding solutions.

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