title: Self-assembled diisocyanide monolayer films on gold and palladium.
abstract: Self-assembled monolayers (SAMs) of the aromatic diisocyanides, 1,4-phenylenediisocyanide, 2,3,5,6-tetramethyl-1,4-phenylenediisocyanide, 4,4'-biphenyldiisocyanide, 3,3',5,5'-tetramethyl-4,4'-biphenyldiisocyanide, and 4,4' '-p-terphenyldiisocyanide, were prepared on gold and palladium surfaces. The SAMs were characterized by ellipsometry, polarization-modulated infrared reflection-absorption spectroscopy (PM-IRRAS), and grazing-angle attenuated total reflectance infrared spectroscopy (GATR). Based on the position of the metal-coordinated isocyanide stretching band, the SAMs on gold were found to bind in the terminal (eta(1)) geometry, while the SAMs on palladium prefer a different geometry which is possibly a triply bridging (mu(3)-eta(1)) geometry. A side-reaction of the unbound isocyanide in the SAM was identified as oxidation to an isocyanate group.
authors.affiliation: IBM Research Division, Almaden Research Center, San Jose, California 95120, USA. saswans@almaden.ibm.com
authors.forename: Sally A
authors.initials: SA
authors.lastname: Swanson
authors.forename: Richard
authors.initials: R
authors.lastname: McClain
authors.forename: Katherine S
authors.initials: KS
authors.lastname: Lovejoy
authors.forename: Neda B
authors.initials: NB
authors.lastname: Alamdari
authors.forename: Jeremy S
authors.initials: JS
authors.lastname: Hamilton
authors.forename: J Campbell
authors.initials: JC
authors.lastname: Scott