Document Detail

Surface reaction of sulfur-containing amino acids on Cu(110).
MedLine Citation:
PMID:  20302285     Owner:  NLM     Status:  MEDLINE    
Adsorption behaviors of sulfur-containing amino acids, cysteine, methionine, and cystine molecules on Cu(110) surface were studied by core level photoelectron spectroscopy using synchrotron radiation. We found the following through the systematic comparisons of core level peaks such as S 2p, N 1s, and O 1s from different amino acids. At low coverage regimes, all the molecules form two distinct thiolate species, and their S 2p binding energy difference was about 0.9 eV. The relative populations of the two thiolates were different for different molecules and their coverage, which is due to the different bond strength of the sulfur-containing functional groups. At high coverage regimes, only cysteine molecules form zwitterionic state, which is related to the molecular ordering on Cu(110) surface.
Jeong Won Kim; Young Mi Lee; Seung Mi Lee; Min Jung Son; Hyeseung Kang; Yongsup Park
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  26     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-04-13     Completed Date:  2010-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5632-6     Citation Subset:  IM    
Korea Research Institute of Standards and Science, Daejeon 305-340, Korea.
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MeSH Terms
Amino Acids / chemistry*
Copper / chemistry*
Models, Theoretical
Photoelectron Spectroscopy
Sulfur / chemistry*
Surface Properties
Reg. No./Substance:
0/Amino Acids; 7440-50-8/Copper; 7704-34-9/Sulfur

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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