作者: Niklas Christensson , Pavel Chábera , Roger G. Hiller , Tõnu Pullerits , Tomáš Polívka
DOI: 10.1016/J.CHEMPHYS.2009.12.011
关键词:
摘要: A model for the third order optical response of carotenoids is used to analyse transient grating and pump-probe data peridinin in solution bound peridinin-chlorophyll protein (PCP). For solution, signal detected at 505 nm exhibits a bi-exponential recovery whose fast phase assigned relaxation from S-2 state that has lifetime 75 +/- 25 fs. The slower, solvent-dependent rise component equilibration (S-1/ICT) state, taking place on time scale 0.6 similar 2.5 ps acetontrile benzene, respectively. These dynamics match those obtained measured spectral region ICT implying contributes nm. In PCP, shows distinctly different kinetics, no recovery. This difference explained by energy transfer chlorophyll-a. (C) 2009 Elsevier B. V. All rights reserved. (Less)