Abstract
Two-dimensional electronic spectroscopy (2DES) was used to investigate the ultrafast energy-transfer dynamics of trimeric photosystem I of the cyanobacterium Thermosynechococcus elongatus. We demonstrate the ability of 2DES to resolve dynamics in a large pigment-protein complex containing ∼300 chromophores with both high frequency and time resolution. Monitoring the waiting-time-dependent changes of the line shape of the inhomogeneously broadened Qy(0-0) transition, we directly observe downhill energy equilibration on the 50 fs time scale.
Original language | English (US) |
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Pages (from-to) | 3677-3684 |
Number of pages | 8 |
Journal | Journal of Physical Chemistry Letters |
Volume | 3 |
Issue number | 24 |
DOIs | |
State | Published - Dec 20 2012 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Physical and Theoretical Chemistry
Keywords
- Excited States
- Photochemistry
- Spectroscopy