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Adlayer of hydroquinone on Pt(111) in solution and in a vacuum studied by STM and LEED.

Authors
  • Inukai, Junji
  • Wakisaka, Mitsuru
  • Yamagishi, Masaoki
  • Itaya, Kingo
Type
Published Article
Journal
Langmuir : the ACS journal of surfaces and colloids
Publication Date
Aug 31, 2004
Volume
20
Issue
18
Pages
7507–7511
Identifiers
PMID: 15323495
Source
Medline
License
Unknown

Abstract

Hydroquinone (HQ) adlayers were formed on Pt(111) in HF solution and in a vacuum. By using scanning tunneling microscopy (STM) in solution, it was revealed that HQ formed an ordered structure on Pt(111) with a strong attractive interaction between two adjacent hydroxyl groups in neighboring HQ molecules. After the sample was transferred into a vacuum, low-energy electron diffraction (LEED) measurement was performed, which showed that the (2.56 x 2.56)R16 degrees incommensurate structure of the HQ adlayer was formed in solution. The HQ adlayer on Pt(111) was formed also by vapor deposition, and the identical (2.56 x 2.56)R16 degrees adlayer structure was found by LEED and STM in a vacuum.

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