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Issue 1, 2011
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Core-crosslinked compartmentalized cylinders

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We present a detailed study on the preparation of compartmentalized cylindrical nanoparticlesvia a templated approach: the polybutadiene part of a linear polybutadiene-block-poly(2-vinyl pyridine)-block-poly(tert-butyl methacrylate) block terpolymer, B420V280T790, having a bulk microstructure with PB cylinders covered by a P2VP double helix and embedded in a PtBMA matrix was selectively crosslinked. Subsequent sonication-assisted dissolution and chemical modifications such as quaternization (P2VP to P2VPq) and ester hydrolysis (PtBMA to poly(sodium methacrylate), PMANa) resulted in core-crosslinked cylinders soluble in organic and aqueous media. Different amounts of crosslinker and the influence of the sonication treatment on size and shape of the cylindrical aggregates were investigated. The cylinders always exhibit a compartmentalized corona. Under certain conditions, in particular quaternization of P2VP in mixtures of THF and MeOH, the helical arrangement of the P2VPq shell could be preserved even in solution, whereas in most other cases randomly distributed P2VP/P2VPq patches were observed. In aqueous solution at high pH, intramicellar interpolyelectrolyte complex (im-IPEC) formation occurred between the positively charged P2VPq shell and the negatively charged PMANa corona. We further show that different noble metal nanoparticles can be generated either selectively within the im-IPEC compartments (Pd) or randomly distributed among shell and corona of the cylinders (Au and Pt).

Graphical abstract: Core-crosslinked compartmentalized cylinders

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Publication details

The article was received on 03 Sep 2010, accepted on 06 Oct 2010 and first published on 09 Nov 2010

Article type: Paper
DOI: 10.1039/C0NR00649A
Citation: Nanoscale, 2011,3, 288-297
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    Core-crosslinked compartmentalized cylinders

    F. H. Schacher, T. Rudolph, M. Drechsler and A. H. E. Müller, Nanoscale, 2011, 3, 288
    DOI: 10.1039/C0NR00649A

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