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. Author manuscript; available in PMC: 2011 Feb 23.
Published in final edited form as: ACS Nano. 2010 Feb 23;4(2):1033–1041. doi: 10.1021/nn901181c

Fig. 3.

Fig. 3

NIR light triggered release of DOX from DOX@HAuNS and DOX@PEG-HAuNS. A, DOX release profiles in the presence and absence of NIR laser. Irradiation with NIR laser caused rapid DOX release during NIR exposure (5 min, red lines), and the release was turned off when laser was switched off. B, Absorption spectra of DOX@HAuNS before and after NIR laser irradiation. Inset: Photograph of aqueous solutions of (a) DOX@HAuNS before laser irradiation, (b) released DOX collected in the supernatant, and (c) DOX@HAuNS after complete release of DOX. C, Effect of pH on DOX retention on PEG-HAuNS. D, Comparison of NIR light-triggered