Optimal control of peridinin excited-state dynamics

0355282 - BC 2012 RIV NL eng J - Článek v odborném periodiku
Dietzek, B. - Chábera, P. - Hanf, R. - Tschierlei, S. - Popp, J. - Pascher, T. - Yartsev, A. - Polívka, Tomáš
Optimal control of peridinin excited-state dynamics.
Chemical Physics. Roč. 373, 1-2 (2010), s. 129-136. ISSN 0301-0104. E-ISSN 1873-4421
Výzkumný záměr: CEZ:AV0Z50510513
Klíčová slova: peridin * excited-state dynamics * coherent control
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 2.017, rok: 2010

Optimal control is applied to study the excited-state relaxation of the carbonyl-carotenoid peridinin in solution. Phase-shaping of the excitation pulses is employed to influence the photoinduced reaction dynamics of peridinin. Furthermore, the effects of pump-wavelength and different solvents on the control efficiency are presented. The data show that excited-state population within either the S1 or the ICT state can be reduced significantly by applying optimal control, while the efficiency of control decreases upon excitation into the low-energy side of the absorption band. However, we are unable to alter the ratio of S1 and ICT population or increase the population of either state compared to excitation with a transform-limited pulse. We compare the results to various control mechanisms and argue that characteristic low-wavenumber modes are relevant for the photochemistry of peridinin.
Trvalý link: http://hdl.handle.net/11104/0194091