Organic-inorganic hybrid nanoparticles via photoinduced micellation and siloxane core cross-linking of stimuli-responsive copolymers

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1021/mz3006439
Author	Search for: Anger, Chiristian; Search for: Deubel, Frank; Search for: Salzinger, Stephan; Search for: Stohrer, Jürgen; Search for: Halbach, Tobias; Search for: Jordan, Rainer; Search for: Veinot, Jonathan G. C.; Search for: Rieger, Bernhard
Format	Text, Article
Abstract	Photoacid-induced siloxane cross-linking of stimuli-responsive copolymer micelles allows the synthesis of well-defined organic-inorganic hybrid nanoparticles. Two conceptually different synthetic approaches are presented, both via photoinduced cross-linking of poly(4-hydroxystyrene-block-styrene) micelles and via one-pot photoacid-catalyzed micelle formation and siloxane cross-linking of poly(4-tert-butoxystyrene-block-styrene). The multistep synthetic route showed intermicellar cross-linking leading to agglomerates. In contrast to this, the formation of the nanoparticles via the one-pot synthesis yielded well-defined structures. The use of different siloxane cross-linking agents and their effects on the properties of the cross-linked micellar structures have been evaluated. Scanning electron microscopy and differential scanning calorimetry indicate rigid core cross-linked nanoparticles. Their size, molar mass, and swelling behavior were analyzed by dynamic and static light scattering. Cyclic siloxane cross-linking agents lead to residual Cî - C double bonds within the nanoparticle core that allow postsynthetic modification by, e.g., thiol-ene click reactions. © 2013 American Chemical Society.
Publication date	2013-01-15
In	ACS Macro Letters 2, no. 2 (15 January 2013): 121–124.
Language	English
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
NPARC number	21270520
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Record identifier	82e03e2f-a893-4300-bd33-ded3b2a0bc43
Record created	2014-02-14
Record modified	2020-04-22

Date modified:: 2024-06-30