Exchange
Reactions between Alkanethiolates and Alkaneselenols
on Au{111}
J. Nathan Hohman
John C. Thomas
Yuxi Zhao
Harsharn Auluck
Moonhee Kim
Wouter Vijselaar
Sander Kommeren
Andreas Terfort
Paul S. Weiss
10.1021/ja503432f.s001
https://acs.figshare.com/articles/journal_contribution/Exchange_Reactions_between_Alkanethiolates_and_Alkaneselenols_on_Au_111_/2286811
When alkanethiolate self-assembled
monolayers on Au{111} are exchanged
with alkaneselenols from solution, replacement of thiolates by selenols
is rapid and complete, and is well described by perimeter-dependent
island growth kinetics. The monolayer structures change as selenolate
coverage increases, from being epitaxial and consistent with the initial
thiolate structure to being characteristic of selenolate monolayer
structures. At room temperature and at positive sample bias in scanning
tunneling microscopy, the selenolate–gold attachment is labile,
and molecules exchange positions with neighboring thiolates. The scanning
tunneling microscope probe can be used to induce these place-exchange
reactions.
2014-06-04 00:00:00
exchange Reactions
selenolate coverage increases
sample bias
scanning tunneling microscope probe
thiolate structure
selenolate monolayer structures
molecules exchange positions
scanning tunneling microscopy
room temperature
monolayer structures change