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J Phys Chem B. 2015 Aug 13;119(32):10341-7. doi: 10.1021/acs.jpcb.5b01524. Epub 2015 Jul 29.

Electron Paramagnetic Resonance Imaging and Spectroscopy of Polydopamine Radicals.

Author information

1
†NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
2
‡Institute of Molecular Physics, Polish Academy of Sciences, ul. Mariana Smoluchowskiego 17, 60179 Poznań, Poland.

Abstract

A thorough investigation of biomimetic polydopamine (PDA) by Electron Paramagnetic Resonance (EPR) is shown. In addition, temperature dependent spectroscopic EPR data are presented in the range 3.8-300 K. Small discrepancies in magnetic susceptibility behavior are observed between previously reported melanin samples. These variations were attributed to thermally acitivated processes. More importantly, EPR spatial-spatial 2D imaging of polydopamine radicals on a phantom is presented for the first time. In consequence, a new possible application of polydopamine as EPR imagining marker is addressed.

PMID:
26176178
DOI:
10.1021/acs.jpcb.5b01524
[Indexed for MEDLINE]

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