期刊
SCIENCE ADVANCES
卷 8, 期 29, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abn0819
关键词
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资金
- Austrian Science Fund (FWF) [P27427-N20, P27649-N20, I3731, I4145]
- Deutsche Forschungsgemeinschaft (DFG) [Po 2226/2-1, 223848855-SFB 1083, Ri 804/8-1]
- Federal State of Hesse LOEWE Program of Excellence, LOEWE Focus Group PriOSS Principles of On-Surface Synthesis
- Austrian Science Fund (FWF) [I3731, I4145] Funding Source: Austrian Science Fund (FWF)
Tracing the modifications of molecules in surface chemical reactions is beneficial. sigma orbitals can be imaged in a broad energy range and photoemission orbital tomography is a unique tool for the detailed analysis of surface chemical reactions.
Tracing the modifications of molecules in surface chemical reactions benefits from the possibility to image their orbitals. While delocalized frontier orbitals with pi character are imaged routinely with photoemission orbital tomography, they are not always sensitive to local chemical modifications, particularly the making and breaking of bonds at the molecular periphery. For such bonds, sigma orbitals would be far more revealing. Here, we show that these orbitals can indeed be imaged in a remarkably broad energy range and that the plane wave approximation, an important ingredient of photoemission orbital tomography, is also well fulfilled for these orbitals. This makes photoemission orbital tomography a unique tool for the detailed analysis of surface chemical reactions. We demonstrate this by identifying the reaction product of a dehalogenation and cyclodehydrogenation reaction.
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