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

Title data

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. Vol. 48 (August 2007) Issue 18 . - pp. 5208-5218.
ISSN 0032-3861
DOI: https://doi.org/10.1016/j.polymer.2007.07.006

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: nanofibers; controlled radical polymerization; catalytic activity
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 07 Apr 2015 13:47
Last Modified: 07 Apr 2015 13:47
URI: https://eref.uni-bayreuth.de/id/eprint/9669