Robust polydopamine nano/microcapsules and their loading and release behavior

Bo Yu; Dao Ai Wang; Qian Ye; Feng Zhou; Weimin Liu

doi:10.1039/B910679K

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Chemical Communications

Issue 44, 2009

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Robust polydopamine nano/microcapsules and their loading and release behavior

Bo Yu , Dao Ai Wang , Qian Ye , Feng Zhou and Weimin Liu

Chem. Commun., 2009, 6789-6791

DOI: 10.1039/B910679K
Received 01 Jun 2009, Accepted 14 Sep 2009
First published on the web 30 Sep 2009

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Polydopamine (Pdop) nano/microcapsules are readily produced through the oxidative polymerization of dopamine and the spontaneous deposition of Pdop on the template surface, followed by the removal of the template. The Pdop capsules are very robust and stable under different pH. Most importantly, they exhibit outstanding unidirectional permeability to Rh6G: they can uptake Rh6G but cannot release Rh6G in an aqueous buffer solution. In contrast, in ethanol, the trend is reversed: they cannot uptake but rapidly release Rh6G.

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Detailed description of preparation and characterization ofpolydopamine capsules and an image of a 2 μm capsule afterloading Rh6G
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Bo Yu
Dao Ai Wang
Qian Ye
Feng Zhou
Weimin Liu

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Chemical Communications

Robust polydopamine nano/microcapsules and their loading and release behavior

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