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. Author manuscript; available in PMC: 2012 Feb 22.
Published in final edited form as: ACS Nano. 2010 Dec 31;5(2):1056–1066. doi: 10.1021/nn102587h

Figure 3. UV-Vis absorbance studies of probe stability in FBS or 0.4 M NaCl and 1xPBS.

Figure 3

The absorbance spectrum of A) citrate-stabilized AuNP before and after addition 0.4 M NaCl and 1x PBS, B) AuMN-DTTC before and after addition of 0.4 M NaCl and 1x PBS, and C) AuMN-DTTC incubation in fetal bovine serum. Change in absorbance over time of D) AuNP after the addition of 0.4 M NaCl and 1x PBS (arrow shows the point of addition), E) AuMN-DTTC after the addition of 0.4 M NaCl and 1x PBS, F) AuMN-DTTC in fetal bovine serum. Unlike AuNP, the AuMN-DTTC nanoparticles remained stable long-term both in high-salt conditions and in serum.