Surface-Enhanced Raman Signal for Terbium Single-Molecule Magnets Grafted on Graphene
Surface-Enhanced Raman Signal for Terbium Single-Molecule Magnets Grafted on Graphene
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DOI：
10.1021/nn1018363
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发表时间：
2010-12-01
期刊：
影响因子：
17.1
通讯作者：
Bendiab, Nedjma
中科院分区：
文献类型：
--
作者：
Lopes, Manuel;Candini, Andrea;Bendiab, Nedjma
我们报告了用功能化单分子磁体（SMM）装饰的单层石墨烯的制备和表征。接枝配体在石墨烯上提供均匀且选择性的沉积。通过结合拉曼显微光谱学、原子力显微镜 (AFM) 和电子传输测量来表征接枝。我们观察到表面增强拉曼信号，这使我们能够研究低至几个孤立分子极限的接枝。通过电荷转移产生的弱相互作用与从头算 DFT 计算一致。我们的结果表明分子和石墨烯本质上都是完整的，并且相互作用是由范德华力驱动的。
We report the preparation and characterization of monolayer graphene decorated with functionalized single-molecule magnets (SMMs). The grafting ligands provide a homogeneous and selective deposition on graphene. The grafting is characterized by combined Raman microspectroscopy, atomic force microscopy (AFM), and electron transport measurements. We observe a surface-enhanced Raman signal that allowed us to study the grafting down to the limit of a few isolated molecules. The weak interaction through charge transfer is in agreement with ab initio DFT calculations. Our results indicate that both molecules and graphene are essentially intact and the Interaction Is driven by van der Waals forces.