2019 Fiscal Year Annual Research Report
N-Heterocyclic Carbene-Functionalized Gold Nanoclusters
| Project/Area Number |
19F19741
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| Research Institution | Nagoya University |
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Principal Investigator |
CRUDDEN Cathleen 名古屋大学, トランスフォーマティブ生命分子研究所, 客員教授 (10721029)
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| Co-Investigator(Kenkyū-buntansha) |
OSTEN KIMBERLY 名古屋大学, トランスフォーマティブ生命分子研究所, 外国人特別研究員
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| Project Period (FY) |
2019-07-24 – 2020-03-31
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| Keywords | Nano Materials / Nanocluster / N-Heterocyclic Carbene / Gold |
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| Outline of Annual Research Achievements |
More recently, we have been working to expand the use of NHCs to the stabilization of gold nanoclusters. Following our initial report on the synthesis and isolation of [Au13(NHC)9Cl3]Cl2 clusters, we improved the isolation and purification procedures further in order to apply these clusters as catalysts in various reactions.
And structures of clusters was confirmed by X-ray crystallographic analysis. After developing optimized procedures for the synthesis and purification of these clusters, we sought to test their activity in oxidation catalysis, along with our previously isolated NHC-phosphine ligated clusters. Towards this end we chose two model reactions, benzyl alcohol oxidation and photocatalytic benzyl amine oxidation as test cases. Benzyl alcohol oxidation using mixed phosphine/NHC Au13 clusters proceeds with moderate turnover frequency (average 7 h-1), producing benzaldehyde with high selectivity (average 95%). Due to the low stability of these clusters under catalytic conditions, we are currently investigating increasing their stability via solid supports and/or ligand modifications. We plan to also investigate other novel catalytic reactions using our family of NHC-functionalized gold nanoclusters in future research.
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| Research Progress Status |
令和元年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和元年度が最終年度であるため、記入しない。
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