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- W2566707723 endingPage "14" @default.
- W2566707723 startingPage "14" @default.
- W2566707723 abstract "The facile preparation of conformal polydopamine (PDA) films on broad classes of materials has prompted extensive research into a wide variety of potential applications for PDA. The constituent molecular species in PDA exhibit diverse chemical moieties, and therefore highly variable properties of PDA-based devices may evolve with post-processing conditions. Here we report the use of redox-inactive cations for oxidative post-processing of deposited PDA films. PDA films incubated in alkaline CaCl2 solutions exhibit accelerated oxidative evolution in a dose-dependent manner. PDA films incubated in CaCl2 solutions exhibit 53% of the oxidative charge transfer compared to pristine PDA films. Carboxylic acid groups generated from the oxidation process lower the isoelectric point of PDA films from pH = 4.0 ± 0.2 to pH = 3.1 ± 0.3. PDA films exposed to CaCl2 solutions during post-processing also enhance Fe2+/Fe3+ chelation compared to pristine PDA films. These data illustrate that the molecular heterogeneity and non-equilibrium character of as-deposited PDA films afford control over the final composition by choosing post-processing conditions, but also demands forethought into how the performance of PDA-incorporated devices may change over time in salt solutions." @default.
- W2566707723 created "2017-01-06" @default.
- W2566707723 creator A5020966396 @default.
- W2566707723 creator A5086624192 @default.
- W2566707723 date "2016-12-22" @default.
- W2566707723 modified "2023-10-16" @default.
- W2566707723 title "Calcium-Mediated Control of Polydopamine Film Oxidation and Iron Chelation" @default.
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- W2566707723 doi "https://doi.org/10.3390/ijms18010014" @default.
- W2566707723 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5297649" @default.
- W2566707723 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28025498" @default.
- W2566707723 hasPublicationYear "2016" @default.
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