John A. Synowiec

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We report fluorescence lifetimes for in vivo chlorophyll a using a time-correlated single-photon counting technique with tunable dye laser excitation. The fluorescence decay of dark-adapted chlorella is almost exponential with a lifetime of 490 ps, which is independent of excitation from 570 nm to 640 nm. Chloroplasts show a two-component decay of 410 ps(More)
Much effort has been expended in the measurement of the fluorescence decay kinetics of chlorophyll in vioo (for examples see papers cited in Harris et al., 1976). To the present time most techniques have lacked either the precision or the time resolution required for accurate determinations. Recent work using high-powered lasers has been hampered asa result(More)
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