Application of NHC-modified Gold Nanoclusters in Photoredox Catalysis

NHC修饰金纳米团簇在光氧化还原催化中的应用

基本信息

  • 批准号:
    20F20329
  • 负责人:
  • 金额:
    $ 1.41万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for JSPS Fellows
  • 财政年份:
    2020
  • 资助国家:
    日本
  • 起止时间:
    2020-11-13 至 2023-03-31
  • 项目状态:
    已结题

项目摘要

N-heterocyclic carbenes (NHCs) have recently emerged as valuable alternatives to thiols or phosphines for the stabilization of metal surfaces, nanoparticles, and clusters. The neutral, electron-rich NHCs form a strong covalent bond with the metal, which is important in providing stability to metal nanoclusters.Thus far we have been able to synthesize a series of chiral Au13 nanoclusters via the direct reduction of achiral dinuclear Au(I) halide complexes ligated by ortho-xylyl-linked bis-N-heterocyclic carbene (bisNHC) ligands. A broad range of functional groups are tolerated as wingtip substituents, allowing for the synthesis of a variety of functionalized chiral Au13 nanoclusters. We have used single-crystal X-ray crystallography to confirm the molecular formula to be [Au13(bisNHC)5Cl2]Cl3, with a chiral helical arrangement of the five bidentate NHC ligands around the icosahedral Au13 core. This Au13 nanocluster is highly luminescent, with a quantum yield of 23%. The two enantiomers of the Au13 clusters can be separated by chiral HPLC, and the isolated enantiomers characterized by circular dichroism spectroscopy. The clusters synthesized by us show remarkable stability, including configurational stability, opening the door to further investigation of the effect of chirality on these clusters. Our preliminary results showed that this bisNHC Au13 nanocluster is friendly to cells and can be used for the cell imaging.
n -杂环碳烯(NHCs)最近作为硫醇或磷化氢的有价值的替代品出现,用于稳定金属表面,纳米颗粒和簇。中性、富电子的NHCs与金属形成强共价键,这对于提供金属纳米团簇的稳定性很重要。到目前为止,我们已经能够通过直接还原由邻木基连接的双n杂环碳(bisNHC)配体连接的非手性双核Au(I)卤化物配合物来合成一系列手性Au13纳米簇。广泛的官能团可以作为翼尖取代基,从而可以合成各种功能化的手性Au13纳米团簇。我们用单晶x射线晶体学证实了分子式为[Au13(bisNHC)5Cl2]Cl3,五个双齿NHC配体围绕着二十面体Au13核呈手性螺旋排列。该Au13纳米团簇具有高发光性能,量子产率为23%。Au13簇的两个对映体可以通过手性高效液相色谱分离,并通过圆二色光谱对分离的对映体进行表征。我们合成的团簇具有显著的稳定性,包括构型稳定性,这为进一步研究手性对这些团簇的影响打开了大门。初步结果表明,该纳米团簇对细胞友好,可用于细胞成像。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
クイーンズ大学(カナダ)
女王大学(加拿大)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Bidentate N-heterocyclic carbenes protected chiral Au13 nanoclusters: Synthesis, characterization and application
双齿N-杂环卡宾保护的手性Au13纳米团簇:合成、表征和应用
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Hong Yi;Masakazu Nambo;Cathleen Crudden
  • 通讯作者:
    Cathleen Crudden
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CRUDDEN Cathleen其他文献

CRUDDEN Cathleen的其他文献

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{{ truncateString('CRUDDEN Cathleen', 18)}}的其他基金

Beyond thiols, beyond gold: Novel NHC-stabilized nanoclusters in catalysis
超越硫醇,超越金:催化中新型 NHC 稳定纳米团簇
  • 批准号:
    23K21120
  • 财政年份:
    2024
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Beyond thiols, beyond gold: Novel NHC-stabilized nanoclusters in catalysis
超越硫醇,超越金:催化中新型 NHC 稳定纳米团簇
  • 批准号:
    21H01949
  • 财政年份:
    2021
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
N-Heterocyclic Carbene-Functionalized Gold Nanoclusters
N-杂环卡宾功能化金纳米团簇
  • 批准号:
    19F19741
  • 财政年份:
    2019
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for JSPS Fellows
Dual Photo/CrossCoupling Catalysis with Organosulfone: Assembly of Chiral Multi-Substituted Methanes
有机砜的双光/交叉偶联催化:手性多取代甲烷的组装
  • 批准号:
    16F16749
  • 财政年份:
    2016
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for JSPS Fellows

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核酸-金属复合物:金属-DNA 线和金属纳米簇-DNA 复合物的制备、结构分析、表征。
  • 批准号:
    21H01956
  • 财政年份:
    2021
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    Grant-in-Aid for Scientific Research (B)
Advanced Metal-Main Group Nanocluster Chemistry
先进金属主族纳米团簇化学
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基于π堆叠纳米团簇流体的液体驻极体
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