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Amino Acid Immobilization of Copper Surface Diffusion on Cu(111)

Journal Article · · Advanced Materials Interfaces
 [1];  [2];  [3];  [2];  [4];  [5];  [1];  [6];  [4]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  3. Villanova Univ., Villanova, PA (United States). Dept. of Chemical Engineering
  4. The Univ. of Tulsa, Tulsa, OK (United States). Dept. of Chemistry and Biochemistry
  5. Argonne National Lab. (ANL), Lemont, IL (United States). Chemical Sciences & Engineering Div. and Inst for Molecular Engineering; Univ. of Chicago, Chicago, IL (United States). Inst. for Molecular Engineering
  6. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering and Dept. of Chemistry

Surface diffusion and molecular self-assembly are two critically important processes in chemistry and nature. Amino acids deposited on a Cu(111) surface driving a separation at the 2D limit between self-assembling molecules and diffusing copper atoms is reported. Since the self-assembling amino acids prefer non-planar, tridentate bonding with neighboring adatoms, they attach to and immobilize diffusing copper adatoms on the surface. This chemical interaction freezes out the copper diffusion causing the condensation of solid copper adatom islands on the surface. Such separation and immobilization are observed for eight different amino acids, suggesting the generality of this phenomenon beyond a single amino acid species. Furthermore, at elevated temperatures, a disruption of the prototypical Ostwald ripening of adatom islands is also observed. Here, these results provide fundamental insight into chiral molecular self-assembly and its interplay with metal atom surface diffusion.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Office of Naval Research
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1576752
Alternate ID(s):
OSTI ID: 1499076
Journal Information:
Advanced Materials Interfaces, Journal Name: Advanced Materials Interfaces Journal Issue: 7 Vol. 6; ISSN 2196-7350
Publisher:
Wiley-VCHCopyright Statement
Country of Publication:
United States
Language:
English

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Using EC-STM to obtain an understanding of amino acid adsorption on Au(111) journal October 2019

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