The photodecomposition mechanism of tert-butyl-9-methylfluorene-9-percarboxylate: new insight from femtosecond IR spectroscopy
2008 | journal article. A publication with affiliation to the University of Göttingen.
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The photodecomposition mechanism of tert-butyl-9-methylfluorene-9-percarboxylate: new insight from femtosecond IR spectroscopy
Reichardt, C.; Schroeder, J. & Schwarzer, D. (2008)
Physical Chemistry Chemical Physics, 10(34) pp. 5218-5224. DOI: https://doi.org/10.1039/b806359a
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Details
- Authors
- Reichardt, Christian; Schroeder, Joerg; Schwarzer, Dirk
- Abstract
- The ultrafast photodissociation of tert-butyl-9-methyl. uorene-9-percarboxylate (TBFC) is studied by mid-infrared transient absorption spectroscopy after UV excitation at 266 nm. By means of 13 C-labeled TBFC and additional DFT calculations transient IR bands in the fingerprint region were unambiguously assigned to the methylfluorenyl radical. The experiments show that the fragmentation is controlled by the S(1)-lifetime of TBFC and, dependent on the solvent, within 0.8-2.1 ps leads to tert-butyloxy and methylfluorenyl radicals plus CO(2) via concerted bond breakage of the O-O and the fluorenyl-C(carbonyl) bond. In accordance, the CO(2) quantum yield is determined to be unity.
- Issue Date
- 2008
- Status
- published
- Publisher
- Royal Soc Chemistry
- Journal
- Physical Chemistry Chemical Physics
- ISSN
- 1463-9076
