Thermal-induced transformation of polydopamine structures: an efficient route for the stabilization of the polydopamine surfaces

0389382 - ÚMCH 2013 RIV DE eng J - Článek v odborném periodiku
Proks, Vladimír - Brus, Jiří - Pop-Georgievski, Ognen - Večerníková, Eva - Wisniewski, Waldemar - Kotek, Jiří - Urbanová, Martina - Rypáček, František
Thermal-induced transformation of polydopamine structures: an efficient route for the stabilization of the polydopamine surfaces.
Macromolecular Chemistry and Physics. Roč. 214, č. 4 (2013), s. 499-507. ISSN 1022-1352. E-ISSN 1521-3935
Grant CEP: GA ČR GPP106/11/P426; GA ČR GAP108/11/1857
Výzkumný záměr: CEZ:AV0Z40500505; CEZ:AV0Z40320502
Institucionální podpora: RVO:61389013 ; RVO:61388980
Klíčová slova: crosslinking * polydopamine * SS NMR
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 2.451, rok: 2013

This work brings a new insight into the structural transformation and stabilization of polydopamine (PDA) surfaces induced by thermal treatment. Taking advantage of the isotopic enrichment, 15N CP/MAS NMR experiments produce significant signal enhancements for PDA, allowing detection of a range of nitrogen structural units-the reaction products of the conversion of NH3+ units of 15N-dopamine.HCl. In addition, 1H-15N cross-polarization polarization-inversion profiles measured for each of the detected 15N NMR signals and 1H-15N FSLG HETCOR NMR spectra allow revisions and extensions to be made in a structural elucidation of PDA. Combining the NMR data thermogravimetric analyses and an FTIR analysis, several competitive processes that occur during the thermal conversion of dopamine are identified.
Trvalý link: http://hdl.handle.net/11104/0218732