Synthesis of Plasmonic Cu2-x Se@ZnS Core@Shell Nanoparticles.
Synthesis of Plasmonic Cu2-x Se@ZnS Core@Shell Nanoparticles.
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DOI：
10.1002/cphc.201500907
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
A. Wolf;T. Härtling;Dominik Hinrichs;Dirk Dorfs
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文献类型：
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作者：
A. Wolf;T. Härtling;Dominik Hinrichs;Dirk Dorfs
我们报道了等离子体Cu 2-xSe @ZnS核@壳纳米粒子（NPs）的合成。我们使用壳生长方法，从Cu 2-x Se纳米颗粒开始，之前已经显示出局部表面等离子体共振（LSPR）。通过仔细的合成计划，我们避免了阳离子交换反应，并获得了在空气下氧化后在NIR中表现出强LSPR的核@壳纳米颗粒。有趣的是，我们生长的具有可变厚度的结晶的封闭ZnS壳仍然允许核在环境条件下缓慢氧化，而核被有效地保护免于还原，即使在还原剂如硼烷叔丁基胺络合物和二异丁基氢化铝的存在下，也在强还原条件下产生稳定的颗粒LSPR。
We report the synthesis of plasmonic Cu2-x Se@ZnS core@shell nanoparticles (NPs). We used a shell growth approach, starting from Cu2-x Se NPs that have been shown before to exhibit a localized surface plasmon resonance (LSPR). By careful synthesis planning we avoided cation exchange reactions and received core@shell nanoparticles that, after oxidation under air, exhibit a strong LSPR in the NIR. Interestingly, the crystalline, closed ZnS shell that we grew with variable thickness still allowed a slow oxidation of the core under ambient conditions, while the core was effectively protected from reduction, even in the presence of reducing agents such as borane tert-butyamine complex and diisobutylaluminum hydride, giving rise to a stable particle LSPR, also under strongly reducing conditions.