Ultrafast dynamics study of PSII core complex

Fluorescence spectroscopic and time properties of isolated core complex in green plant photosystem II(PS II)was investigated using the time-resolved fluorescence spectroscopy technique. Three life-time components were detected by multi-exponential and non-linear least-square curve fitting.Those components are 3.9, 20.4, 930.5 ps. The fluorescence ratio of each component to the whole is 1.0%, 12.7 %,86.3%, respectively. Using Global analyzing and Gauss three wave fitting, the peak-wavelength of fluorescence spectroscope curves are 671.03,684.74,696.16 nm.