Plasmonic Metal Oxide Nanocrystals via Surface Anchoring of Redox-Active Phosphorus Species
Plasmonic Metal Oxide Nanocrystals via Surface Anchoring of Redox-Active Phosphorus Species
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DOI：
10.1021/acs.chemmater.1c01393
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发表时间：
2021-07-02
影响因子：
8.6
通讯作者：
Jin，Yizheng
中科院分区：
文献类型：
--
作者：
Du，Hui;Li，Yang;Jin，Yizheng
我们展示了一个通用的和简单的合成后的方法，通过氧化还原活性磷物种的表面锚定的等离子体氧化物纳米晶体的产生。该过程是由三（三甲基硅基）膦和表面羟基之间的反应引发的，导致表面锚定的氧化还原活性磷物种。以下氧化还原反应在氧化物纳米晶体中产生自由电子，伴随着表面锚定的P从−III到+V的价态变化。在这项工作中展示的合成后氧化还原化学将激发新的设计方法的等离子体氧化物纳米晶体的发展。
We demonstrate a general and simple postsynthetic method for the generation of plasmonic oxide nanocrystals via surface anchoring of redox-active phosphorus species. The processes are initiated by the reaction between tris(trimethylsilyl)phosphine and the surface hydroxyl groups, resulting in surface-anchored redox-active phosphorus species. The following redox reactions generate free electrons in oxide nanocrystals, accompanied by the valance-state changes of the surface-anchored P from −III to +V. The resulting nanocrystals show tunable plasmon resonance peaks in the near-infrared or mid-infrared regime. The postsynthetic redox chemistry demonstrated in this work shall inspire new design of methodologies for the development of plasmonic oxide nanocrystals.