Self-assembly of monodispersed, chiral nanoclusters of cysteine on the Au(110)-(1 x 2) surface.
The self-assembly of monodispersed supramolecular nanoclusters was observed by scanning tunneling microscopy (STM). The clusters form from the naturally occurring amino acid cysteine by vapor deposition onto the Au(110)-(1 x 2) surface under ultrahigh vacuum conditions. Enantiomerically pure l- and d-cysteine yields clusters with mirror-image STM signatures. Racemic ld-cysteine segregates into homochiral clusters, evidencing specific intermolecular interactions during the self-assembly process.
Kühnle
Angelika
A
Interdisciplinary Nanoscience Center (iNANO), Center for Atomic-scale Materials Physics, and Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark.
Linderoth
Trolle R
TR
Besenbacher
Flemming
F
D003545:Cysteine / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D013237:Stereoisomerism; D013499:Surface Properties; D014618:Vacuum
D006046:Gold; D003545:Cysteine