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The observed layering of Pt complexes demonstrates that this
supramolecular gel formation through the self-assembly approach
of metalated amino acids has strong potential in the fabrication of
precisely controlled metal arrays.
6
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In conclusion, we designed and synthesized a new type
of Pt-complex-bound amino acid which showed excellent
self-assembly properties via intermolecular hydrogen bonding,
affording b-sheet aggregates that support well-regulated
Pt arrays. This supramolecular gel-templated metal aggregation
approach will constitute an efficient methodology to control metal
accumulation in the production of functional organometallic
materials.
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(
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´
This work was supported by Grants-in-Aid for Scientific
Research from the Ministry of Education, Culture, Sports,
Science, and Technology (MEXT) and PRESTO, the Japan
Science and Technology Agency. K.I. is grateful for the Young
Scientist Fellowship from JSPS and extends special thanks to
the MEXT project ‘‘Integrated Research on Chemical Synthesis’’.
K.O. expresses special thanks for the financial support under
the Global COE program ‘‘International Center for Integrated
Research and Advanced Education in Material Science’’. The
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1 MGC is minimum gelation concentration and the detailed experimental
8
9
8
00 MHz NMR and FT-ICR-MS measurements were
1
1
1
supported by JURC of ICR, Kyoto University. The SAXS
and WAX measurements were performed at the BL19B2 and
BL40B2 beamlines at SPring-8 with the approval of the
Japan Synchrotron Radiation Research Institute (2007A1003,
conditions of gelation are described in Table S1 in ESIw.
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1
Notes and references
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18 For AFM topographic images of a gel fibril, see ESIw, Fig. S2.
´
3
938 Chem. Commun., 2012, 48, 3936–3938
This journal is c The Royal Society of Chemistry 2012