2010年
Substrate dependent structure of adsorbed aryl isocyanides studied by sum frequency generation (SFG) spectroscopy
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
- ,
- ,
- ,
- 巻
- 12
- 号
- 13
- 開始ページ
- 3156
- 終了ページ
- 3163
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/b920411c
- 出版者・発行元
- ROYAL SOC CHEMISTRY
Effects of metal substrate on the bonding nature of isocyanide group of two aryl isocyanides, 1,4-phenylene diisocyanide (PDI) and 4-methylphenyl isocyanide (MPI), and tilt angle of MPI were examined by measuring sum frequency generation (SFG) spectra of the self-assembled monolayers (SAMs) of these molecules on Au, Pt, Ag, and Pd surfaces. The SFG peaks due to "metal bonded'' and "free'' -NC groups were resolved by comparing the SFG spectra of PDI with IR spectra obtained by DFT calculations and previous results of vibrational spectroscopy. Based on the peak positions of the "metal bonded'' -NC, it is clarified that while PDI and MPI were adsorbed at top sites on Au, Ag, and Pt surfaces, they adsorbed at bridge sites on the Pd surface. The tilt angles of MPI were determined from the intensity ratio between the SFG peaks of C-H symmetric and asymmetric stretching vibrational modes of the CH(3) group. The tilt angles of the MPI SAMs were in the order of Pt < Pd < Ag < Au, reflecting the bonding nature between the -NC group and the substrate atoms.
- リンク情報
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- DOI
- https://doi.org/10.1039/b920411c
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201002208933689355
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/20237704
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000275706100012&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1039/b920411c
- ISSN : 1463-9076
- J-Global ID : 201002208933689355
- PubMed ID : 20237704
- Web of Science ID : WOS:000275706100012