Ultrafast IR spectroscopy of polymeric cytosine nucleic acids reveal the long-lived species is due to a localised state
|Title:||Ultrafast IR spectroscopy of polymeric cytosine nucleic acids reveal the long-lived species is due to a localised state||Authors:||Keane, Páraic M.
Doorley, Gerard W.
Kelly, John M.
Clark, Ian P.
Parker, Anthony W.
Greetham, Gregory M.
Magno, Luís M.
Quinn, Susan J.
|Permanent link:||http://hdl.handle.net/10197/4322||Date:||22-Feb-2012||Online since:||2013-05-16T09:17:19Z||Abstract:||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.||Type of material:||Journal Article||Publisher:||RSC Publishing||Journal:||Physical chemistry chemical physics : PCCP||Volume:||14||Issue:||18||Start page:||6300||End page:||6304||Copyright (published version):||2012, Royal Society of Chemistry||Keywords:||C-rich sequences; Photo-mutation; Localisation of damage; dC30 polymer; dCMP monomer; d(CpC) dinucleotide||DOI:||10.1039/c2cp23774a||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Chemistry Research Collection|
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