Title :
In-situ, vibrationally-resonant sum frequency spectroscopy study of the self-assembly of dioctadecyl disulfide on Au
Author :
Yang, C.S.C. ; Richter, L.J. ; Briggman, K.A. ; Stephenson, J.C.
Author_Institution :
Microanalysis Sci. Div., Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
Summary form only given. We conducted an in-situ SFG study of the assembly of SAMs from dioctadecyl disulfide on gold from ethanol solutions. In-situ spectra taken under actual deposition conditions in real time and modeling allow direct insight into the individual steps of the self-assembly. The SFG measurements allow independent determination of the total surface thiolate coverage and the internal molecular structure of the adsorbed thiolate. The uptake of surface thiolate was found to follow Langmuir kinetics, i.e. the probability of a molecule sticking to the surface is proportional to the available uncovered surface area.
Keywords :
adsorption; monolayers; optical frequency conversion; organic compounds; self-assembly; vibrational states; Langmuir kinetics; conformation; dioctadecyl disulfide; disordered chain structure; ethanol solutions; in-situ SFG study; internal molecular structure; monolayers; self assembly; sticking probability; surface density; total surface thiolate coverage; vibrationally-resonant sum frequency spectroscopy; Optical frequency conversion; Organic compounds;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031238
