Controlling Infrared Plasmon Resonances in Inverse-Spinel Cadmium Stannate Nanocrystals via Site-Selective Cation-Exchange Reactions,Chemistry of Materials

当前位置： X-MOL 学术 › Chem. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Controlling Infrared Plasmon Resonances in Inverse-Spinel Cadmium Stannate Nanocrystals via Site-Selective Cation-Exchange Reactions
Chemistry of Materials ( IF 7.2 ) Pub Date : 2021-03-05 , DOI: 10.1021/acs.chemmater.0c03176
Yaxu Zhong ₁ , Zeke Liu ₁ , Erik Sarnello ₂ , Tao Li _{2,

3} , Yang Liu ₁ , Jun Chen ₁ , Xingchen Ye ₁

Affiliation

Doped metal oxide nanocrystals (NCs) exhibit tunable localized surface plasmon resonances (LSPRs) in the infrared spectral region. Compared to the binary oxides commonly studied, plasmonic NCs derived from ternary oxides remain far less explored primarily due to the difficulty of controlling NC phase-purity and stoichiometry. Here, we report the synthesis of inverse spinel-type cadmium stannate (Cd₂SnO₄) NCs, for which cation-exchange reactions were developed to tailor their composition and LSPR properties. X-ray absorption spectroscopy studies revealed that the inequivalent tetrahedrally and octahedrally coordinated Cd²⁺ can be selectively exchanged for Cu⁺ and In³⁺ ions, respectively, enabling broadband tunable LSPR and Cu-mediated cation-exchange with lanthanide ions that are otherwise difficult to incorporate. Our work paves the way for systematic compositional engineering to accelerate the design of complex metal oxide NCs with emerging plasmonic, electronic, and magnetic properties.

中文翻译：

通过位点选择性阳离子交换反应控制反尖晶石锡酸镉纳米晶体中的红外等离子体共振

掺杂的金属氧化物纳米晶体（NCs）在红外光谱区域中显示出可调的局部表面等离子体共振（LSPR）。与通常研究的二元氧化物相比，主要由于控制NC相纯度和化学计量的困难，仍很少探索源自三元氧化物的等离激元NC。在这里，我们报告反向尖晶石型锡酸镉（Cd ₂ SnO ₄）NCs的合成，为此开发了阳离子交换反应以调整其组成和LSPR性能。X射线吸收光谱研究表明，不等价的四面体和八面体配位的Cd ²⁺可以选择性地交换为Cu ⁺和In ³⁺离子可分别实现宽带可调LSPR和铜介导的阳离子交换，而镧离子则难以掺入。我们的工作为系统组成工程铺平了道路，以加快具有新兴的等离子，电和磁特性的复杂金属氧化物NC的设计。

更新日期：2021-03-23

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11