title: Electron Paramagnetic Resonance Imaging and Spectroscopy of Polydopamine Radicals.
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.
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: Radosław
authors.initials: R
authors.lastname: Mrówczyński
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: L Emerson
authors.initials: LE
authors.lastname: Coy
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: Błażej
authors.initials: B
authors.lastname: Scheibe
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Czechowski
authors.affiliation: ‡Institute of Molecular Physics, Polish Academy of Sciences, ul. Mariana Smoluchowskiego 17, 60179 Poznań, Poland.
authors.forename: Maria
authors.initials: M
authors.lastname: Augustyniak-Jabłokow
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: Stefan
authors.initials: S
authors.lastname: Jurga
authors.affiliation: †NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614 Poznań, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Tadyszak
mesh_terms: D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D007211:Indoles / Q000737:chemistry*; D008543:Melanins / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D019047:Phantoms, Imaging; D011108:Polymers / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013696:Temperature
chemical_list: D007211:Indoles; D008543:Melanins; D011108:Polymers; C568283:polydopamine