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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Schmidhammer, U. Bizjak, T. Lochbrunner, S. Riedle, E. Karpiuk, J. |
| Copyright Year | 2005 |
| Description | Author affiliation: LS fur BioMolekulare Opt., Ludwig-Maximilians-Univ., Munchen, Germany (Schmidhammer, U.; Bizjak, T.; Lochbrunner, S.; Riedle, E.) |
| Abstract | This study directly measures the charge separation in malachite green lactone (MGL) and phenolphthalein (PP) in aprotic media using femtosecond spectroscopy. The transient spectra show that after optical excitation a transfer process leads directly to the formation of the dimethylaniline cation in the case of MGL and to the phenol radical cation in the case of PP. Two-color pump-probe measurements with a 60 fs cross correlation reveal that the build-up time of the radical cations is 50 fs for PP in acetonitrile. This is the fastest electron transfer so far, which occurs on the time scale of inert solvation dynamics or even faster. This suggests that solvation is not a precondition to reach charge transfer state, indicating a significant role of high-frequency intramolecular vibrational mode(s) in the electron transfer process. |
| File Size | 671772 |
| File Format | |
| ISBN | 0780389735 |
| DOI | 10.1109/EQEC.2005.1567336 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-06-12 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Electrons Solvents Ultrafast optics Optical pumping Bonding Ultrafast electronics Chemistry Chemical elements Molecular electronics Atomic measurements |
| Content Type | Text |
| Resource Type | Article |
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