Authors
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Kolomytkin, D. O. ; Elmanovich, I. V. ; Abramchuk, S. S. ; Tsarkova, L. A. ; Pospiech, D. ; Möller, M. ; Gallyamov, M. O. ; Khokhlov, A. R.
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Title
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Raspberry-like Pt clusters with controlled spacing produced by deposition of loaded block copolymer micelles from supercritical CO2
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Date
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02.10.2015
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Number
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47621
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Abstract
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We present a “one-pot” supercritical approach for creating organized metal nanoparticle arrays. For this an improved method of deposition of micelles formed by semifluorinated poly(methyl methacrylate)-block-poly(perfluoroalkyl methacrylate) diblock copolymers in supercritical CO2 solution is applied. The presented approach provides metal clusters with a controlled inter-particle spacing and relatively narrow size distributions in a single-step “one-pot” process during which the micelle formation proceeds simultaneously with organometallic Pt-precursor dissolution and reduction inside the high-pressure vessel containing a proper substrate. Subsequent decompression of the vessel results in patterned clusters of reduced metallic nanoparticles on the substrate. Presented approach of producing such raspberry-like Pt clusters is relatively simple as compared to other time-consuming multi-step processes, and the resulting structures seem to be promising for electro-catalytical applications.
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Publisher
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European Polymer Journal
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Wikidata
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Citation
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European Polymer Journal 71 (2015) 73-84
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DOI
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https://doi.org/10.1016/j.eurpolymj.2015.07.048
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Tags
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block copolymer supercritical carbon dioxide micelle nanoparticle self-assembly
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