Adsorption Structure and Work Function of Succinic Acid on Cu(110) Surface

• YAGYU Shinjiro

  Advanced Electronic Materials Center, National Institute for Materials Science (NIMS)

• YOSHITAKE Michiko

  Advanced Electronic Materials Center, National Institute for Materials Science (NIMS)

• CHIKYOW Toyohiro

  Advanced Electronic Materials Center, National Institute for Materials Science (NIMS)

Bibliographic Information

Other Title

• コハク酸のCu(110)表面での吸着状態と仕事関数
• コハクサン ノ Cu 110 ヒョウメン デノ キュウチャク ジョウタイ ト シゴト カンスウ

Abstract

The relation between the adsorption structure and the work function of succinic acid (HOOC-CH2-CH2-COOH) on Cu(110) surface, has been investigated as a function of the surface temperature using reflection absorption infrared spectroscopy, low energy electron diffraction, He atom scattering, temperature programmed desorption and Kelvin probe. From 350 to 450 K, succinic acid adsorbed as monosuccinate (HOOC-CH2-CH2-COO^-) form. As the temperature increases, each monosuccinate make a dimer structure. From 450 K, monosuccinate changes to bisuccinate (^-OOC-CH2-CH2-COO^-) form. Bisuccinate structure is stable until 600 K and then desorption and dissociation occurred. The work function increased by adsorption due to ionization of molecules, and decreased with increasing the temperature until 450 K due to the effects of change in the dipole moment of the conformational change of the molecule. From 450 K to 600 K the work function was constant, because of competition between desorption and change in the dipole moment of molecules, and then it reached the value of clean surface. It was experimentally clarified that the work function was affected by the difference in the state of conformation of molecules adsorbed.

Journal

• Hyomen Kagaku

  Hyomen Kagaku 28 (9), 525-531, 2007

  The Surface Science Society of Japan

Keywords

• work function
• copper
• carboxylic acid
• adsorption structure

Details

• CRID: 1390001206457476224
• NII Article ID: 10019752580
• NII Article ID: 130004486440
• NII Book ID: AN00334149
• DOI: 10.1380/jsssj.28.525
• ISSN: 18814743
• ISSN: 03885321
• NDL BIB ID: 8941911
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8941911
• Web Site: https://www.jstage.jst.go.jp/article/jsssj/28/9/28_9_525/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed