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. 2020 May 26;21(11):3742. doi: 10.3390/ijms21113742

Figure 3.

Figure 3

(a) Absorbance spectra of AuNP-PEG-COOH, showing an absorbance peak at 520 nm. (b) Standard curve of PEG-AuNP-COOH concentrations (10–50 ppm). (c) Absorbance spectra of AlPcS4Cl, showing an absorbance peak at 676 nm. (d) Standard curve of AlPcS4Cl concentrations (10–50 µM).