Abstract
Sub-5-fs spectroscopy of porphyrin J-aggregates reveals a coherent molecular vibration coupled to the Frenkel exciton. The bleaching and induced absorption signals show synchronous oscillations with the frequency of 244 cm-1. The coherent oscillation is explained by a modulated transition dipole moment, which is due to a dynamic intensity borrowing from the intense B-transition to the weak Q-transition through the ruffling mode with the 244 cm-1-frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 413-419 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry B |
| Volume | 105 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2001 Jan 18 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry
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