OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy

| PUBLISHED BY SAS — AVAILABLE FROM SAS AND OSA

  • Vol. 46, Iss. 1 — Jan. 1, 1992
  • pp: 79–87

Optical Considerations for Infrared Reflection Spectroscopic Analysis in the C-H Stretching Region of Monolayer Films at an Aqueous/Metal Interface

Darwin D. Popenoe, Scott M. Stole, and Marc D. Porter

Applied Spectroscopy, Vol. 46, Issue 1, pp. 79-87 (1992)


View Full Text Article

Acrobat PDF (1046 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

This paper describes the optical analysis, construction, testing, and application of a cell for measuring in situ IR reflection spectra in the C-H stretching region of monolayer films of long-chain alkanethiolates on evaporated Au films beneath a thin overlayer (∼1 μm) of aqueous solution. The cell facilitates the interchange of sample (monolayer-coated) and reference substrates—a major improvement over previous designs. This allows the acquisition of an IR reflection spectrum of a monolayer without the application of electrochemical or polarization-modulation methods. The optical properties of the cell are analyzed within the context of classical electromagnetic theory; the effects of angle of incidence, solution layer thickness, and solution composition (H2O and D2,O) and the refractive indices of the IR-transparent window material on the observed spectrum are specifically examined. Calculations of both the mean-square electric fields and the reflection spectra for a monolayer of octadecanethiolate on Au are presented. From these results, conditions to achieve high surface detectability are identified, and optically induced alterations in the intensities and shapes of the monolayer spectrum are delineated. Spectra for the same monolayer are measured to test these predictions as well as to assess the practical limitations of the experimental technique.

Citation
Darwin D. Popenoe, Scott M. Stole, and Marc D. Porter, "Optical Considerations for Infrared Reflection Spectroscopic Analysis in the C-H Stretching Region of Monolayer Films at an Aqueous/Metal Interface," Appl. Spectrosc. 46, 79-87 (1992)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-46-1-79


Sort:  Journal  |  Reset

References

References are not available for this paper.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited