Structure of Polydopamine: A Never-Ending Story?

We show that this structural proposal is very unlikely to occur taking into account unambiguous results obtained by different analytical methods, among them 13C CPPI MAS NMR, 1H MAS NMR, and ES-HRMS for the first time in addition to XPS and FTIR spectroscopy

Jürgen Liebscher

2013

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  • An alternative structure was proposed for PDA wherein dihydroxyindoline, indolinedione, and eventually dopamine units are not covalently linked to each other but are held together by hydrogen bonding between oxygen atoms or π stacking
  • We show that this structural proposal is very unlikely to occur taking into account unambiguous results obtained by different analytical methods, among them 13C CPPI MAS NMR, 1H MAS NMR, and ES-HRMS for the first time in addition to XPS and FTIR spectroscopy
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