Surface science of soft scorpionates.
The chemisorption of the soft scorpionate Li[PhTm(Me)] onto silver and gold surfaces is reported. Surface enhanced Raman spectroscopy in combination with the Raman analysis of suitable structural models, namely, [Cu(kappa(3)-S,S,S-PhTm(Me))(PCy(3))], [Ag(kappa(3)-S,S,S-PhTm(Me))(PCy(3))], [Ag(kappa(2)-S,S-PhTm(Me))(PEt(3))], and [Au(kappa(1)-S-PhTm(Me))(PCy(3))], are employed to identify the manner in which this potentially tridentate ligand binds to these surfaces. On colloidal silver surface-enhanced Raman spectroscopy (SERS) spectra are consistent with PhTm(Me) binding in a didentate fashion to the surface, holding the aryl group in close proximity to the surface. In contrast, on gold colloid, we observe that the species prefers a monodentate coordination in which the aryl group is not in close proximity to the surface.
Wallace
Dawn
D
WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.
Quinn
Edward J
EJ
Armstrong
David R
DR
Reglinski
John
J
Spicer
Mark D
MD
Smith
W Ewen
WE
D000327:Adsorption; D000818:Animals; D004563:Electrochemistry / Q000379:methods; D006046:Gold / Q000737:chemistry*; D006801:Humans; D008297:Male; D053768:Metal Nanoparticles / Q000737:chemistry; D036103:Nanotechnology; D011487:Protein Conformation; D012605:Scorpions / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000379:methods; D013499:Surface Properties
D006046:Gold