Department of Physics, University of South Florida, Tampa, Florida 33620, USA.
Langmuir. 2013 May 28;29(21):6354-60. doi: 10.1021/la400972k. Epub 2013 May 13.
Self-assembly of terephthalic acid (TPA), vacuum deposited on Pt(111) supported graphene, has been investigated by scanning tunneling microscopy (STM). TPA organizes in an ordered 3 × 4 superstructure with respect to the graphene lattice. This structure is a consequence of hydrogen-bonded TPA chains that arrange in a commensurate overlayer on graphene. Due to the polycrystalline nature of graphene on Pt(111), the TPA layer exhibits various grain boundaries and dislocations. Molecular resolved STM imaging has been used to characterize these defect structures in the TPA monolayer.
通过扫描隧道显微镜 (STM) 研究了对苯二甲酸 (TPA) 在 Pt(111) 支撑的石墨烯上真空沉积后的自组装。TPA 相对于石墨烯晶格有序地组织成 3×4 超结构。这种结构是氢键 TPA 链的结果，这些链在石墨烯上排列成一个共格的覆盖层。由于 Pt(111) 上石墨烯的多晶性质，TPA 层表现出各种晶界和位错。分子分辨的 STM 成像已被用于表征 TPA 单层中的这些缺陷结构。
