Please use this identifier to cite or link to this item: doi:10.22028/D291-29487
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Title: Multifunctional Thin Films and Coatings from Caffeic Acid and a Cross-Linking Diamine
Author(s): Iacomino, Mariagrazia
Paez, Julieta I.
Avolio, Roberto
Carpentieri, Andrea
Panzella, Lucia
Falco, Geppino
Pizzo, Elio
Errico, Maria E.
Napolitano, Alessandra
del Campo Bécares, Aránzazu
d'Ischia, Marco
Language: English
Title: Langmuir : the ACS journal of surfaces and colloids
Volume: 33
Issue: 9
Startpage: 2096
Endpage: 2102
Publisher/Platform: ACS
Year of Publication: 2017
Publikation type: Journal Article
Abstract: The exploitation of easily accessible and nontoxic natural catechol compounds for surface functionalization and coating is attracting growing interest for biomedical applications. We report herein the deposition on different substrates of chemically stable thin films by autoxidation of 1 mM caffeic acid (CA) solutions at pH 9 in the presence of equimolar amounts of hexamethylenediamine (HMDA). UV-visible, mass spectrometric, and solid state 13C and 15N NMR analysis indicated covalent incorporation of the amine during CA polymerization to produce insoluble trioxybenzacridinium scaffolds decorated with carboxyl and amine functionalities. Similar coatings are obtained by replacing CA with 4-methylcatechol (MC) in the presence of HMDA. No significant film deposition was detected in the absence of HMDA nor by replacing it with shorter chain ethylenediamine, or with monoamines. The CA/HMDA-based films resisted oxidative and reductive treatments, displayed efficient Fe(II) and Cu(II) binding capacity and organic dyes adsorption, and provided an excellent cytocompatible platform for growing embryonic stem cells. These results pointed to HMDA as an efficient cross-linking mediator of film deposition from natural catechols for surface functionalization and coatings.
DOI of the first publication: 10.1021/acs.langmuir.6b04079
URL of the first publication:
Link to this record: hdl:20.500.11880/28218
ISSN: 1520-5827
Date of registration: 26-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
Professorship: NT - Prof. Dr. Aránzazu del Campo
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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