Visualization of the Borazine Core of B3N3-Doped Nanographene by STM.,ACS Applied Materials & Interfaces

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Visualization of the Borazine Core of B3N3-Doped Nanographene by STM.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-08 , DOI: 10.1021/acsami.0c02324
Axel Belser ₁ , Katharina Greulich ₁ , Peter Grüninger _{1,

2} , Holger F Bettinger _{2,

3} , Heiko Peisert ₁ , Thomas Chassé _{1,

3}

Affiliation

Electronic interface properties and the initial growth of hexa-peri-hexabenzocoronene with a borazine core (BN-HBC) on Au(111) have been studied by using X-ray photoelectron spectroscopy (XPS), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). A weak, but non-negligible, interaction between BN-HBC and Au(111) was found at the interface. Both hexa-peri-hexabenzocoronene (HBC) and BN-HBC molecules form well-defined monolayers. The different contrast in STM images of HBC and BN-HBC at different tunneling voltages with submolecular resolution can be ascribed to differences in the local density of states (LDOS). At positive and negative tunneling voltages, STM images reproduce the distribution of the highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO) as determined by density functional theory (DFT) calculations very well.

中文翻译：

通过STM可视化B3N3掺杂纳米石墨烯的硼嗪核。

使用X射线光电子能谱（XPS），低能电子衍射（LEED）研究了具有硼嗪核的六-peri-hexabenzocoronene（BN-HBC）在Au（111）上的电子界面性质和初始生长。和扫描隧道显微镜（STM）。在界面处发现了BN-HBC与Au（111）之间的微弱但不可忽略的相互作用。六周六苯并六氢呋喃（HBC）和BN-HBC分子均形成明确的单层。在具有亚分子分辨率的不同隧穿电压下，HBC和BN-HBC的STM图像中的不同对比度可归因于局部态密度（LDOS）的差异。在正负隧穿电压下，

更新日期：2020-04-23

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