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

fYear

2002

fDate

19-24 May 2002

Firstpage

151

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/QELS.2002.1031238

Filename

1031238