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Design of polymer nanofiber systems for the immobilization of homogeneous catalysts - Preparation and leaching studies

Titelangaben

Stasiak, Michael ; Röben, Caren ; Rosenberger, Nadine ; Schleth, Florian ; Studer, Armido ; Greiner, Andreas ; Wendorff, Joachim H.:
Design of polymer nanofiber systems for the immobilization of homogeneous catalysts - Preparation and leaching studies.
In: Polymer. Bd. 48 (2007) Heft 18 . - S. 5208-5218.
ISSN 0032-3861
DOI: https://doi.org/10.1016/j.polymer.2007.07.006

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

In this paper a novel general concept for the immobilization of catalysts is presented. It will be shown that catalysts covalently bound to low-molecular weight polystyrene (M-n > 4000 g/mol) can be immobilized into high molecular weight polystyrene nanofibers using the electro-spinning process. The immobilized catalyst-oligostyrene conjugates are well dispersed within the fibers as shown by DSC and X-ray studies. In DMSO, the oligostyrene tails of the catalysts suppress the leaching of the catalysts out of the fibers into the solution for thermodynamic reasons. Leaching studies are conducted using naphthalene-conjugated oligostyrenes using fluorescence spectroscopy. The naphthalene-polystyrene conjugates with defined molecular weight are readily prepared using nitroxide-mediated radical polymerization (NMP). As a model catalyst system, proline-poly styrene conjugates are synthesized by NMP to study catalyst leaching out of the polystyrene nanofibers used as a catalyst matrix. (c) 2007 Elsevier Ltd. All rights reserved.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: nanofibers; controlled radical polymerization; catalytic activity
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 07 Apr 2015 13:47
Letzte Änderung: 01 Sep 2022 11:54
URI: https://eref.uni-bayreuth.de/id/eprint/9669