期刊
LANGMUIR
卷 24, 期 22, 页码 12883-12891出版社
AMER CHEMICAL SOC
DOI: 10.1021/la8019974
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资金
- EaStCHEM postgraduate studentship
- EPSRC [EP-D036828-1]
- DFG
- European Community through the IA-SFS project
- Engineering and Physical Sciences Research Council [EP/D036828/1] Funding Source: researchfish
- EPSRC [EP/D036828/1] Funding Source: UKRI
Self-assembled monolayers (SAMs) of a bis(pyrazol-1-yl)pyridine-substituted thiol (bpp-SH) on Au (111)/mica were studied with scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and near-edge X-ray absorption fine structure spectroscopy (NEXAFS). Using substrates precoated with perylene-3,4,9,10-tetracarboxylic acid dianhydride (PTCDA), preparation at elevated temperatures yields highly ordered layers whose structure is described by a rectangular (5 x root 3) unit cell containing one molecule. The bis(pyrazol-1-yl)pyridine (bpp) units exhibit pi-stacking along the < 11 (2) over bar > direction, and they are tilted significantly. We conclude the three imine nitrogen atoms in the bpp headgroup adopt a trans,trans arrangement.
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