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. Author manuscript; available in PMC: 2015 Aug 7.
Published in final edited form as: Chem Commun (Camb). 2014 Aug 7;50(61):8388–8390. doi: 10.1039/c4cc03293d

Fig. 2.

Fig. 2

a) Continuous monitoring of the photoacid-activated release of propidium iodide from particles containing Stalk1 (upper trace) and Stalk2 (middle trace). No photoactivation occurs in TRIS buffer (bottom trace). The 10 mW, 408 nm pump laser was turned on at 40 minutes (vertical arrow). b) Release profile from the Stalk1 system activated by sequential on/off cycles. The 10 mW, 408 nm pump laser was used. c) Wavelength dependence of nanovalve activation of the Stalk1 system. At 0.4 hours the 514 nm (50 mW) pump laser excitation was turned on for 20 minutes, and then at 0.75 hours the 408 nm (10 mW) pump laser was turned on.