Plasmonic Semiconductor Nanoparticles in a Metal–Organic Framework Structure and Their in Situ Cation Exchange
Plasmonic Semiconductor Nanoparticles in a Metal–Organic Framework Structure and Their in Situ Cation Exchange
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DOI：
10.1021/acs.chemmater.6b03425
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发表时间：
2016-10
影响因子：
8.6
通讯作者：
A. Wolf;L. Diestel;Franziska Lübkemann;Torben Kodanek;Tarek Mohamed;J. Caro;Dirk Dorfs
中科院分区：
文献类型：
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作者：
A. Wolf;L. Diestel;Franziska Lübkemann;Torben Kodanek;Tarek Mohamed;J. Caro;Dirk Dorfs
纳米颗粒（NPs）在金属有机骨架（MOFs）中的复合材料联合收割机将NPs的多功能特性与MOFs的限定孔隙率相结合。在这里，我们展示了等离子体半导体纳米颗粒在ZIF-8晶体中的封装。p型和n型掺杂的等离子体激元半导体NP（分别由Cu 2-xSe和氧化铟锡组成）都被封装。在复合材料的形成过程中，每个系统的等离子体和结构特性被保留。此外，我们证明了通过MOF嵌入的Cu 2-xSe NPs与HgSe NPs和Ag 2Se NPs的首次成功原位阳离子交换，整合在ZIF-8中的NPs的可及性。这种离子交换的发生不影响金属-有机骨架的组成或结构完整性。因此，这种方法允许固定等离子体纳米颗粒，避免强等离子体-等离子体耦合，但仍保持等离子体纳米颗粒可接近。
Composites of nanoparticles (NPs) in metal–organic frameworks (MOFs) combine the versatile properties of NPs with the defined porosity of MOFs. Here, we show the encapsulation of plasmonic semiconductor NPs in ZIF-8 crystals. Both p-type and n-type doped plasmonic semiconductor NPs (consisting of Cu2–xSe and indium tin oxide, respectively) are encapsulated. The plasmonic and structural properties of each system are preserved during the formation of the composites. Furthermore, we demonstrate the accessibility of the NPs integrated in ZIF-8 via the successful first-time in situ cation exchange of MOF-embedded Cu2–xSe NPs to HgSe NPs and Ag2Se NPs. This ion exchange occurs without influencing the composition or structural integrity of the metal–organic framework. This approach hence allows a fixation of plasmonic nanoparticles avoiding strong plasmon–plasmon coupling but still keeping the plasmonic nanoparticles accessible.