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UV absorption, circular dichroism and emission spectroscopy as well as nanosecond and femtosecond transient absorption measurements were used to characterize the excited states of 2-thiothymine (2TT), its riboside (2TTR) and deoxyriboside (2TTD) in acetonitrile (ACN) solution. The lowest triplet state (T 1 ) could be observed exclusively in the experiments. Upon excitation to higher singlet...
The stationary and dynamic properties of S 2 →S 0 fluorescence of 2′,3′,5′-tri-O-acetyl-4-thiouridine (TU) in acetonitrile solution at room temperature have been studied. In the emission spectra of the sample, measured upon excitation with picosecond laser pulses, changes in fluorescence intensity and emission band shape have been observed with increasing time of excitation. The fluorescence...
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