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. Author manuscript; available in PMC: 2015 Apr 21.
Published in final edited form as: Polym Chem. 2014 Jan 27;5(8):2768–2773. doi: 10.1039/C3PY01652H

Fig. 4.

Fig. 4

The change in the UV-vis absorption over time upon treating PEO-b-PPDSM-coated AuNPs with GSH in PBS (2.0 mM). Pyridine-2-thione, the by-product of the thiol-disulfide exchange reaction, has a maximum absorption at 343 nm.