Assembly of Poly(dopamine)/Poly(N-isopropylacrylamide) Mixed Films and Their Temperature-Dependent Interaction with Proteins, Liposomes, and Cells

Yan Zhang, Karthiga Panneerselvam, Ryosuke Ogaki, Leticia Hosta Rigau, Rebecca van der Westen, Bettina E. B. Jensen, Boon M. Teo, Meifang Zhu, Brigitte Stadler

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Many biomedical applications benefit from responsive polymer coatings. The properties of poly(dopamine) (PDA) films can be affected by codepositing dopamine (DA) with the temperature-responsive polymer poly(N-isopropylacrylamide) (pNiPAAm). We characterize the film assembly at 24 and 39 degrees C using DA and aminated or carboxylated pNiPAAm by a quartz crystal microbalance with dissipation monitoring (QCM-D), X-ray photoelectron spectroscopy, UV-vis, ellipsometry, and atomic force microscopy. It was found that pNiPAAm with both types of end groups are incorporated into the films. We then identified a temperature-dependent adsorption behavior of proteins and liposomes to these PDA and pNiPAAm containing coatings by QCM-D and optical microscopy. Finally, a difference in myoblast cell response was found when these cells were allowed to adhere to these coatings. Taken together, these fundamental findings considerably broaden the potential biomedical applications of PDA films due to the added temperature responsiveness.
Original languageEnglish
JournalLangmuir
Volume29
Issue number32
Pages (from-to)10213-10222
Number of pages10
ISSN0743-7463
DOIs
Publication statusPublished - 2013
Externally publishedYes

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