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. Author manuscript; available in PMC: 2013 Dec 12.
Published in final edited form as: J Am Chem Soc. 2012 Dec 3;134(49):19957–19960. doi: 10.1021/ja308875r

FIGURE 4.

FIGURE 4

SERS spectra of the Au film after several repeated concentration step changes between 100 nM T1 (traces a, b and c) and 1.0 µM P1 (traces a', b' and c'). The SERS spectrum was returned to its pre-exposure form by first washing with PBS 3 times and then immersing in the P1 solution for 2.0 h.