| Autor: |
Alan C. Luntz, J.-K. Sass, D.S. Bethune, D.K. Roe |
| Rok vydání: |
1987 |
| Předmět: |
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| Zdroj: |
Berichte der Bunsengesellschaft für physikalische Chemie. 91:320-323 |
| ISSN: |
0005-9021 |
| DOI: |
10.1002/bbpc.19870910417 |
| Popis: |
A substantial increase in optical sensitivity of infrared reflection-absorption Spectroscopy (IRRAS) was achieved by the combination of a pulsed, tunable infrared laser and a novel thin layer cell which was designed to provide uniformity and control of solution layer thickness. The importance of these cell parameters is illustrated by optical model calculations and experimentally verified by vibrational spectra of CO adsorbed on Pt electrodes. Peak values of relative reflectance changes exceeding 10% were obtained at near-monolayer coverages without any modulation technique. In view of these results, the ramifications of the wide range of incidence angles and of the lack of precise control of solution layer thickness in previous IRRAS studies are examined with regard to spectral fidelity and response to potential transients. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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