Formation of Long-Lived Dark States during Electronic Relaxation of Pyrimidine Nucleobases Studied Using Extreme Ultraviolet Time-Resolved Photoelectron Spectroscopy

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JOURNAL OF PHYSICAL CHEMISTRY A (2022)

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A Plausible Mechanism of Uracil Photohydration Involves an Unusual Intermediate

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Summary: The photolysis of pyrimidine nucleobases, such as uracil, in water leads to the formation of a highly energetic but kinetically stable intermediate. This intermediate, characterized by a twisted pyrimidine ring and a twisted double bond, can engage in a hydration reaction with water, suggesting a plausible mechanism for uracil photohydration.

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Extreme ultraviolet time-resolved photoelectron spectroscopy of aqueous aniline solution: enhanced surface concentration and pump-induced space charge effect

Christopher W. West et al.

Summary: The study found that aniline is hydrophobically segregated on the liquid surface in aqueous solution, with its surface concentration correlated with the photoelectron intensity. The experiment also observed the impact of PISC on aniline and extracted the excited state dynamics information in aqueous solution.

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Excited-State Dynamics in the RNA Nucleotide Uridine 5′-Monophosphate Investigated Using Femtosecond Broadband Transient Absorption Spectroscopy

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Formation of Long-Lived Dark States during Electronic Relaxation of Pyrimidine Nucleobases Studied Using Extreme Ultraviolet Time-Resolved Photoelectron Spectroscopy

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