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We have compared the picosecond to nanosecond solvation dynamics of coumarin 153 in liquid poly(ethylene glycol)s to that in the deuterated analogues. The observed solvation dynamics in the poly(ethylene glycol)s shows a biexponential feature. Deuterium substitutions of the end hydroxyl groups on the poly(ethylene glycol)s do not affect on the faster solvation time constant of about 130 ps, but the...
We studied the photoinduced electron transfer process at low temperatures by suing persistent spectral hole burning spectroscopy. The efficiency of non-photochemical hole burning for zinc tetraphenylporphine (ZnTPP) and zinc phthalocyanine decreased in the presence of electron acceptors. This is attributed to fast electron transfer and charge recombination reactions. The rate constant of the electron...
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