Self-assembled organic monolayers on epitaxial graphene with enhanced structural and thermal stability

被引：13
|
作者：
Karmel, Hunter J. [1 ]
Garramone, John J. [1 ]
Emery, Jonathan D. [1 ]
Kewalramani, Sumit [1 ]
Bedzyk, Michael J. [1 ,2 ]
Hersam, Mark C. [1 ,3 ]
机构：
[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Phys, Evanston, IL 60208 USA
[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
来源：
CHEMICAL COMMUNICATIONS | 2014年 / 50卷 / 64期
关键词：
ATOMIC LAYER DEPOSITION; NANOSTRUCTURES; PTCDI; FUNCTIONALIZATION; SPECTROSCOPY; DIELECTRICS;
D O I：
10.1039/c4cc02761b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Scanning tunnelling microscopy and X-ray reflectivity are used to characterize adlayers of perylenetetracarboxylic diimide (PTCDI) deposited on epitaxial graphene (EG) on SiC(0001). PTCDI adopts a herringbone structural phase on EG/SiC that can accommodate sub-5 nm voids with molecularly defined boundaries and isolated molecular vacancies at room temperature. The PTCDI monolayer remains intact up to substrate temperatures of similar to 260 degrees C, thus demonstrating enhanced thermal stability compared to previously studied perylene derivatives on EG/SiC.
引用
收藏
页码：8852 / 8855
页数：4
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