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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15457

Title: UV-induced functionalization of poly(divinylbenzene) nanoparticles via efficient [2+2]-photocycloadditions
Authors: Ethirajan, Anitha
Baeten, Linny
Conradi, Matthias
Ranieri, Kayte
Conings, Bert
Boyen, Hans-Gerd
Junkers, Thomas
Issue Date: 2013
Publisher: ROYAL SOC CHEMISTRY
Citation: POLYMER CHEMISTRY, 4 (14), p. 4010-4016
Abstract: The efficient functionalization of poly(divinylbenzene) (polyDVB) nanoparticles via Paterno-Buchi type [2 + 2]-photocycloadditions is described. Initially polyDVB nanoparticles with high density of alkene groups on the surface are synthesized via radical miniemulsion polymerization. Subsequently, UV-induced [2 + 2]-photocycloadditions with different functionalized aldehydes have been performed on the surface under mild and catalyst-free conditions. In order to show the versatility and the accessibility towards incorporation of different functionalities with this strategy, surface modifications were carried out with ATRP initiators and NHS esters for bioconjugation, respectively. Finally, these photofunctionalized nanoparticles were grafted with poly(butyl acrylate) or with gold-labeled antibodies to prove the success of the reactions. PolyDVB nanoparticles before and after photofunctionalization are characterized by X-ray photoelectron spectroscopy (XPS), electron microscopy (SEM and TEM) and ATR-FTIR spectroscopy. Results show that the photoconjugation route is highly efficient and grafting densities of 4 to 5 molecules per nm(2) on the entire surface of the particles are achieved.
Notes: [Ethirajan, Anitha; Baeten, Linny; Conings, Bert; Boyen, Hans-Gerd] Univ Hasselt, Inst Mat Res, IMO IMOMEC, B-3590 Diepenbeek, Belgium. [Baeten, Linny; Conradi, Matthias; Ranieri, Kayte; Junkers, Thomas] Univ Hassek, Inst Mat Res IMO, Polymer React Design Grp, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/15457
DOI: 10.1039/c3py00427a
ISI #: 000321729200015
ISSN: 1759-9954
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

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