期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 123, 期 6, 页码 1359-1364出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.9b00099
关键词
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资金
- Singapore Ministry of Education Academic Research Fund [MOE2015-T2-1-039, RG16/15]
- Ministry of Education Malaysia
- SLAB/SLAI fellowship scheme from the University of Malaya
We use two-dimensional electronic spectroscopy to measure the ultrafast correlation dynamics between the Q(x) and Q(y) transitions in chlorophyll molecules. We derive a variation to the center line slope method to quantify the frequency fluctuation cross-correlation function, C-xy(T-w). Compared with the frequency fluctuation correlation function of the Q(y) transition, we observe that there is only a minimal correlation between the Q(x) and Q(y) transition, even at the ultrashort timescale of similar to 100 fs, which then decays to zero in a time scale of similar to 2 ps.
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