Time-resolved infra-red spectroscopy of triplet excited aromatic ketones
This work presents the results obtained with a custom-made time-resolved infra-red spectrometer (TRIR) and a set of aromatic ketones (AK). The IR spectra of these molecules were obtained in solid and liquid media at room temperature. The TRIR apparatus is described, following the main stages of the building up of the instrument. The final version is composed of IR laser diodes as the probing light source, and an excimer-pumped dye laser as the exciting light source. The detection is assured by a fast HgCdTe photodiode. The time resolution lies in the 200 nanoseconds and the sensitivity allows the detection of differences in absorbance of 5x1.0E-4 and 7x1.0E-5 for a spectral resolution of 2 respectively 8/cm. The results of the TRIR measurements on AK molecules are reported and discussed. Two different sets of data have been produced. The first group of measurements has been realized in salt matrices (KBr, NaCl) at room temperature. For the second group of data, the molecules have been measured in solution at room temperature.
Bibliographic Reference: Report: Thesis - Schriftenreihe des Max-Planck-Instituts für Strahlenchemie, Nr. 42, 1988
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei München (DE)
Record Number: 198910486 / Last updated on: 1994-12-01
Original language: en
Available languages: en