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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: ACS Sustain Chem Eng. 2013 Apr 3;1(7):833–842. doi: 10.1021/sc400042h

Figure 5.

Figure 5

(A) UV/Vis extinction spectra of citrate-stabilized AuNPs as a function of time after addition 100 mM NaCl. 50 μM BSA is added at t = 10 s. (B) Same experiment as presented in (A), except that a sulfhydryl-blocked form of BSA (SB-BSA) is added at t = 10 s. The blue dots highlight the maximum extinction of each spectrum. The drop in extinction after BSA addition is due to dilution of the AuNP solution.