Dual Functionalization of Liquid‐Exfoliated Semiconducting 2H‐MoS2 with Lanthanide Complexes Bearing Magnetic and Luminescence Properties,Advanced Functional Materials

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Dual Functionalization of Liquid‐Exfoliated Semiconducting 2H‐MoS2 with Lanthanide Complexes Bearing Magnetic and Luminescence Properties
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2017-09-08 , DOI: 10.1002/adfm.201703646
Simon G. McAdams ₁ , Edward A. Lewis ₂ , Jack R. Brent ₂ , Sarah J. Haigh _{2,

3} , Andrew G. Thomas _{2,

4} , Paul O'Brien _{1,

2,

4} , Floriana Tuna _{1,

4} , David J. Lewis ₂

Affiliation

Liquid exfoliated, atomically thin semiconducting transition metal dichalcogenides (TMDs), as inorganic equivalents of graphene, have attracted great interest due to their distinctive physical, optoelectronic, and chemical properties. Functionalization of 2D TMDs brings new prospects for applications in optoelectronics, quantum technologies, catalysis, and medicine. In this report, dual functionalization of 2D semiconducting 2H‐MoS₂ nanosheets through simultaneous incorporation of magnetic and luminescent properties is demonstrated. A facile method is proposed for tuning the properties of the TDM semiconductors and accessing multimodal platforms, consisting in covalent grafting of lanthanide complexes onto the surface of 2D TMDs. Dual functionalization of liquid‐exfoliated MoS₂ nanosheets is demonstrated simultaneously with both europium (III) and gadolinium (III) complexes to form a colloidally stable luminescent (with millisecond lifetimes) and paramagnetic MoS₂‐based nanohybrid material. This work is the first example of transition metal dichalcogenide nanosheets functionalized with preformed lanthanide complexes. These findings open new prospects for covalent functionalization of TMDs with molecular species bearing specific functionalities as a means to tune the optoelectronic properties of the semiconductors, in order to create advanced materials and devices with a wide range of functionalities.

中文翻译：

具有磁性和发光特性的镧系元素配合物对液体剥落半导体2H-MoS2的双重功能化

作为石墨烯的无机等同物，液体剥落的原子薄的半导体过渡金属二卤化二金属锡（TMDs）由于其独特的物理，光电和化学特性而引起了人们的极大兴趣。二维TMD的功能化为光电子，量子技术，催化和医学领域的应用带来了新的前景。在本报告中，通过同时结合磁性和发光特性，证明了2D半导体2 H ‐MoS ₂纳米片的双重功能化。提出了一种简便的方法来调节TDM半导体的性能并访问多峰平台，该方法包括将镧系元素络合物共价接枝到2D TMD的表面上。液体剥落的MoS的双重功能化nano（III）和g（III）配合物可同时形成_2个纳米片，形成胶体稳定的发光体（具有毫秒级寿命）和基于顺磁MoS ₂的纳米杂化材料。这项工作是用预先形成的镧系元素络合物功能化的过渡金属二卤化碳纳米片的第一个实例。这些发现为带有特定功能的分子种类的TMD的共价功能化开辟了新的前景，作为调节半导体光电子性能的手段，从而创造了具有广泛功能的先进材料和器件。

更新日期：2017-09-08

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