The DX centre
T.N. Morgan
Semiconductor Science and Technology
Glaser-like coupling of terminal alkynes by thermal activation is extensively used in on-surface chemistry. Here we demonstrate an intramolecular version of this reaction performed by atom manipulation. We used voltage pulses from the tip to trigger a Glaser-like coupling between terminal alkyne carbons within a custom-synthesized precursor molecule adsorbed on bilayer NaCl on Cu(111). Different conformations of the precursor molecule and the product were characterized by molecular structure elucidation with atomic force microscopy and orbital density mapping with scanning tunneling microscopy, accompanied by density functional theory calculations. We revealed partially dehydrogenated intermediates, providing insight into the reaction pathway.
T.N. Morgan
Semiconductor Science and Technology
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering
R. Ghez, M.B. Small
JES
J. Tersoff
Applied Surface Science