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Doorley, Gerard W.
Preferred name
Doorley, Gerard W.
Official Name
Doorley, Gerard W.
Research Output
Now showing 1 - 2 of 2
- PublicationUltrafast IR spectroscopy of polymeric cytosine nucleic acids reveal the long-lived species is due to a localised state(RSC Publishing, 2012-02-22)
; ; ; ; ; ; ; ; ; The decay pathways of UV-excited cytosine polymers are investigated using picosecond time-resolved infrared spectroscopy. Similar yields of a non-emissive (1)nÏ * state are found in the single-stranded dC(30) polymer as in the dCMP monomer, but with a longer lifetime in the polymer (80 ps vs. 39 ps). A longer lifetime is also found in the d(CpC) dinucleotide. No evidence of excimer states is observed, suggesting that localised (1)nÏ * excited states are the most significant intermediates present on the picosecond timescale.403Scopus© Citations 13 - PublicationA comparative picosecond transient infrared study of 1-methylcytosine and 5'-dCMP that sheds further light on the excited states of cytosine derivatives(ACS Publications, 2011-03)
; ; ; ; ; ; ; ; ; The role of N1-substitution in controlling the deactivation processes in photoexcited cytosine derivatives has been explored using picosecond time-resolved IR spectroscopy. The simplest N1-substituted derivative, 1-methylcytosine, exhibits relaxation dynamics similar to the cytosine nucleobase and distinct from the biologically relevant nucleotide and nucleoside analogues, which have longer-lived excited-state intermediates. It is suggested that this is the case because the sugar group either facilitates access to the long-lived (1)n(O)Ï * state or retards its crossover to the ground state.487Scopus© Citations 47