- AutorIn
- Sebastian Rauch
- Klaus-Jochen Eichhorn
- Ulrich Oertel
- Manfred Stamm
- Dirk Kuckling
- Petra Uhlmann
- Titel
- Temperature responsive polymer brushes with clicked rhodamine B: synthesis, characterization and swelling dynamics studied by spectroscopic ellipsometry
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa-139314
- Quellenangabe
- Soft matter 2012;8:10260–10270, ISSN: 1744-683X
- Erstveröffentlichung
- 2012
- Abstract (DE)
- Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
- Abstract (EN)
- Here, we report on a new temperature responsive polymer brush system with a terminal “click” functionality. Bifunctionalized poly(N-isopropylacrylamide) (PNiPAAm) with distinct functional end groups was synthesized by atom transfer radical polymerization (ATRP) and grafted to a modified silicon substrate. The presence of the active terminal alkyne functionality is validated using an azide-modified rhodamine B (N3-RhB) via copper(I) catalyzed alkyne–azide cycloaddition (CuAAC). The optical properties and swelling dynamics of an N3-RhB modified PNiPAAm brush are analyzed in dry state and in situ by VIS-spectroscopic ellipsometry (SE). The best-fit results are obtained using a Gaussian oscillator model and are confirmed by UV/VIS-spectroscopy. We observed evidence of interactions between the aromatic residues of the dye and the PNiPAAm amide groups, which significantly affect the swelling behavior of the modified polymer brush.
- Andere Ausgabe
- DOI: 10.1039/c2sm26571k
- Volltext des Artikels, der zuerst in der Zeitschrift "Soft matter" des Royal Society of Chemistry-Verlages erschienen ist.
Link: http://dx.doi.org/10.1039/c2sm26571k - Freie Schlagwörter (DE)
- Atom Transfer Radical Polymerization, ATRP, niedermolekular, N-isopropylacrylamid, Poly(N-isopropylacrylamid), Polymerbürste, Proteinadsorption
- Freie Schlagwörter (EN)
- transfer radical polymerization, low molecular weight, n-isopropylacrylamide, grafting density, poly(n-isopropylacrylamide) brushes, protein adsorption, chain collapse, polyelectrolyte brushes, conformational-change, chemistry approach
- Klassifikation (DDC)
- 530
- Klassifikation (RVK)
- UA 1000
- Verlag
- Royal Society of Chemistry, Cambridge
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa-139314
- Veröffentlichungsdatum Qucosa
- 07.04.2014
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis