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Stopped-Flow Rapid-Scan Fourier Transform Infrared Spectroscopy

Volume 53, Number 3 (March 1999) Page 292-296

Dunn, Brian C.; Eyring, Edward M.

A stopped-flow rapid-mixing device interfaced with a rapid-scan FT-IR spectrometer and a diode-array UV-visible spectrophotometer permits the observation of reaction transient intermediates over a broad range of wavelengths at minimal cost. The system has been evaluated for both spectral regions with the use of two different chemical reaction systems. The presence of a transient intermediate is clearly indicated in one case. Unexpected reactivity was observed in the other case. This approach will allow the study of chemical reactions even when no spectral changes occur in the UV-visible region.