Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 38, Pages 11073-11077Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201505232
Keywords
block copolymers; mesoporous materials; mesoporous metals; micelles; platinum
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Funding
- Japan Society for the Promotion of Science (JSPS) [26708028]
- Japanese-Taiwanese Cooperative Program of Japan Science and Technology Agency (JST)
- Canon Foundation
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A facile method for the fabrication of well-dispersed mesoporous Pt nanospheres involves the use of a polymeric micelle assembly. A core-shell-corona type triblock copolymer [poly(styrene-b-2-vinylpyridine-b-ethylene oxide), PS-b-P2VP- b-PEO] is employed as the pore-directing agent. Negatively charged PtCl42- ions preferably interact with the protonated P2VP(+) blocks while the free PEO chains prevent the aggregation of the Pt nanospheres. The size of the mesopores can be finely tuned by varying the length of the PS chain. Furthermore, it is demonstrated that the metallic mesoporous nanospheres thus obtained are promising candidates for applications in electrochemistry.
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