Spontaneous assembly of organic thiocyanates on gold sufaces. Alternative precursors for gold thiolate assemblies.
Thiolate self-assembly on gold has proven to be a valuable technique for assembling monolayers on a wide variety of substrates. However, the oxidative instability of the thiols, especially aromatic thiols and alpha,omega-dithiols, presents several difficulties. Shown here is that thiocyanates, easily synthesized stable thiol derivatives, can be directly assembled on gold surfaces with no auxiliary reagents required. Assembly is complete in 24 h and leaves a similar gold thiolate structure as seen in typical thiol self-assembled monolayers.
Department of Chemistry and Center for Nanoscale Sciences and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA.
Jacob W
JW
Ciszek
Michael P
MP
Stewart
James M
JM
Tour