A platform for research: civil engineering, architecture and urbanism
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Summary Experimental results on carboxylate (RCOO−) molecules chemisorbed on an atomically flat TiO2 (110) surface are summarized as a prototype of well-defined organo-oxide interfaces. Recent research has led to remarkable advances in preparing carboxylate monolayers and in characterizing those interfaces by thermal desorption spectroscopy, photoelectron spectroscopy, X-ray absorption spectroscopy, vibrational spectroscopy, electron stimulated desorption, and probe microscopy. The principles of carboxylate adsorption, i.e. dissociation at the surface, a bridge structure of the adsorbate, and spontaneous formation of a (2 ×1)-ordered monolayer at room temperature, are valid for all alkyl-substituted carboxylates (R = H, CH3, C2H5, C(CH3)3, C≡CH, C6H5, and CF3) ever examined. Selected topographic images of carboxylate monolayers determined by scanning tunneling microscopy and noncontact atomic force microscopy are presented. Different carboxylates (RCOO− and R′COO−) can be identified molecule-by-molecule by the microscopes when they are coadsorbed.
Summary Experimental results on carboxylate (RCOO−) molecules chemisorbed on an atomically flat TiO2 (110) surface are summarized as a prototype of well-defined organo-oxide interfaces. Recent research has led to remarkable advances in preparing carboxylate monolayers and in characterizing those interfaces by thermal desorption spectroscopy, photoelectron spectroscopy, X-ray absorption spectroscopy, vibrational spectroscopy, electron stimulated desorption, and probe microscopy. The principles of carboxylate adsorption, i.e. dissociation at the surface, a bridge structure of the adsorbate, and spontaneous formation of a (2 ×1)-ordered monolayer at room temperature, are valid for all alkyl-substituted carboxylates (R = H, CH3, C2H5, C(CH3)3, C≡CH, C6H5, and CF3) ever examined. Selected topographic images of carboxylate monolayers determined by scanning tunneling microscopy and noncontact atomic force microscopy are presented. Different carboxylates (RCOO− and R′COO−) can be identified molecule-by-molecule by the microscopes when they are coadsorbed.
Carboxylates Adsorbed on TiO2 (110)
Onishi, Hiroshi (author)
2003-01-01
15 pages
Article/Chapter (Book)
Electronic Resource
English
Lower Unoccupied Molecular Orbital , Scanning Tunneling Microscopy , Electron Energy Loss Spectroscopy , Topographic Image , Vibrational Spectroscopy Chemistry , Chemistry/Food Science, general , Atomic, Molecular, Optical and Plasma Physics , Nanotechnology , Surfaces and Interfaces, Thin Films , Physical Chemistry
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