C60 on Nanostructured Nb-Doped SrTiO3(001) Surfaces

C60 on Nanostructured Nb-Doped SrTiO3(001) Surfaces
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纳米结构 Nb 掺杂 SrTiO3(001) 表面上的 C60

DOI:
10.1021/jp910556c
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发表时间:
2010-02
影响因子:
3.7
通讯作者:
--
中科院分区:
化学3区
文献类型:
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文献摘要

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利用扫描隧道显微镜(STM)研究了Nb掺杂SrTiO 3(001)表面的纳米结构,并对所观察到的纳米结构的表面图案进行了归属。C60在这些纳米结构模板上的连续沉积揭示了不同的生长模式,包括在c(4 × 2)重构表面上的离散小C60岛,在(6 × 2)双线上的平行一维C60链,在(8 × 2)三线上的C60双链,在(11 × 2)四氢化萘上的外延C60密堆积吸附层,和二维有序C60二聚体阵列(7 × 6)华夫饼。这些结构上的差异主要源于相对较强的吸附物-基质相互作用以及表面形貌的要求。因此,作为模板的纳米结构氧化物表面在分子纳米结构中具有很大的潜力。
Nanostructured Nb-doped SrTiO3(001) surfaces were investigated with STM, and the surface patterns for observed nanostructures were assigned. Sequential C60 deposition onto these nanostructured templates reveals distinct growth modes, including discrete small C60 islands on the c(4 × 2) reconstruction surface, parallel one-dimensional C60 chains on (6 × 2) dilines, C60 double chains on (8 × 2) trilines, epitaxial C60 close packed adlayers over (11 × 2) tetralines, and two-dimensional ordered C60 dimer arrays on (7 × 6) waffles. These structural diversities mainly stem from the relatively strong adsorbate−substrate interactions as well as the surface topography demands. The nanostructured oxide surfaces as templates thus have great potential in molecular nanoarchitecture.