Ultrafast IR spectroscopy of polymeric cytosine nucleic acids reveal the long-lived species is due to a localised state
Citation:
Keane, PM, Wojdyla, M, Doorley, GW, Kelly, JM, Clark, IP, Parker, AW, Greetham, GM, Towrie, M, Magno, LM, Quinn, SJ, Ultrafast IR spectroscopy of polymeric cytosine nucleic acids reveal the long-lived species is due to a localised state, Physical Chemistry Chemical Physics, 14, 2012, 6307-6311Download Item:
Abstract:
The decay pathways of UV-excited cytosine polymers are investigated using picosecond time-resolved infrared spectroscopy. Similar yields of a non-emissive 1niU* state are found in the single-stranded dC30 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 1niU* excited states are the most significant intermediates present on the picosecond timescale.
Sponsor
Grant Number
European Union (EU)
App81030
Science Foundation Ireland (SFI)
10/RFP/CAP2915
Science Foundation Ireland (SFI)
07/RFP/CHEF437
Science Foundation Ireland (SFI)
06/RFP/CHP035
Author's Homepage:
http://people.tcd.ie/jmkellyDescription:
PUBLISHED
Author: KELLY, JOHN
Type of material:
Journal ArticleSeries/Report no:
Physical Chemistry Chemical Physics14
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Full text availableKeywords:
UV-excited cytosine polymersDOI:
http://dx.doi.org/10.1039/c2cp23774aMetadata
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