Institut Néel, associé à l'Université Joseph Fourier, CNRS, BP 166, 38042 Grenoble Cedex 9, France.
ACS Nano. 2010 Dec 28;4(12):7531-7. doi: 10.1021/nn1018363. Epub 2010 Nov 10.
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.
我们报告了功能化单分子磁体（SMMs）修饰的单层石墨烯的制备和表征。接枝配体提供了在石墨烯上均匀且选择性的沉积。通过拉曼微光谱、原子力显微镜（AFM）和电子输运测量对接枝进行了表征。我们观察到表面增强拉曼信号，使我们能够研究接枝到几个孤立分子的极限。通过电荷转移的弱相互作用与从头算 DFT 计算一致。我们的结果表明，分子和石墨烯基本上都是完整的，相互作用是由范德华力驱动的。
