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. Author manuscript; available in PMC: 2009 Sep 24.
Published in final edited form as: ACS Nano. 2008 May;2(5):889–896. doi: 10.1021/nn800072t

Figure 7.

Figure 7

UV/vis absorption measurements show that most of the water-insoluble drug molecules were trapped inside the pores when the NPs were dispersed in water, but they were quickly released in organic solvents.