Title :
Photosynthetic light-harvesting by carotenoids: detection of an intermediate excited state
Author :
Cerullo, G. ; Polli, D. ; Lanzani, Guglielmo ; De Silvestri, S. ; Hashimoto, H. ; Cogdell, R.J.
Author_Institution :
Nat. Lab. for Ultrafast & Ultraintense Opt. Sci., INFM, Milan, Italy
Abstract :
We present the first direct evidence of an intermediate excited state mediating internal conversion in carotenoids. Transition to this state occurs within ≈ 50 fs. This result changes the description of the primary step in photosynthesis.
Keywords :
excited states; high-speed optical techniques; molecular biophysics; photosynthesis; proteins; carotenoids; intermediate excited state; light-harvesting; photosynthesis; Biomedical optical imaging; Physics;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1314025
