AVS 51st International Symposium
    Biomaterial Interfaces Monday Sessions
       Session BI-MoP

Paper BI-MoP23
L-Cysteine Adsorption on Cu(100) Studied by Sulfur K-edge NEXAFS and XPS

Monday, November 15, 2004, 5:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: S. Yagi, Nagoya University, Japan
Authors: S. Yagi, Nagoya University, Japan
Y. Matsumura, Nagoya University, Japan
T. Nomoto, Nagoya University, Japan
J.A. Syed, Hiroshima University, Japan
S.A. Sardar, Hiroshima University, Japan
K. Soda, Nagoya University, Japan
E. Hashimoto, Hiroshima University, Japan
M. Taniguchi, Hiroshima University, Japan
Correspondent: Click to Email
For the application to medical materials it is important to study the mechanism of reaction at interface between amino acid, which is the component of protein, and metal, and the influence of water on the mechanism. We have paid attention to L-Cysteine [HSCH@sub 2@CH(NH@sub 2@)COOH] and investigated the adsorption behavior of L-Cysteine/Cu(100) by Sulfur K-edge Near Edge X-ray Absorption Fine Structure (NEXAFS) and X-ray Photoelectron Spectroscopy (XPS) techniques. Sulfur K-edge NEXAFS spectrum for L-Cysteine/Cu(100) shows that the main peak of @sigma@@super *@(S-C) is decreased in comparison with the spectrum for L-Cysteine powder. This means that L-Cysteine molecule obtains some electrons from the Cu(100) surface.