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Jet cooled spectra of pyrrolobenzene and of pyrrolobenzonitrile: the nature of the excited states
| Content Provider | Semantic Scholar |
|---|---|
| Author | Belau, Leonid Haas, Yehuda Rettig, Wolfgang J. |
| Copyright Year | 2002 |
| Abstract | Abstract The jet cooled fluorescence and resonance enhanced multiphoton ionization (REMPI) excitation spectra of pyrrolobenzene (PB) and pyrrolobenzonitrile (PBN) were recorded in the UV range. Fluorescence lifetimes and emission spectra were obtained upon excitation up to 2200 cm −1 above the 0–0 band. The data indicate that the emission is from the forbidden L b -type state, while the absorption spectrum in solution is dominated by the L a -type state. The energy gap between S 1 and S 2 , in these molecules is very small (around 500 cm −1 ); at room temperature, hot bands of the more allowed L a -type transition are expected to dominate the absorption spectrum. |
| Starting Page | 157 |
| Ending Page | 163 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/S0009-2614(02)01316-7 |
| Volume Number | 364 |
| Alternate Webpage(s) | http://chem.ch.huji.ac.il/~yehuda/publications/2002/Chem%20Phys%20Lett%20364%20157_163%202002.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/S0009-2614%2802%2901316-7 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
