NDLI: Long-Lived Excited-State Dynamics of i-Motif Structures Probed by Time-Resolved Infrared Spectroscopy.

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Long-Lived Excited-State Dynamics of i-Motif Structures Probed by Time-Resolved Infrared Spectroscopy.

Content Provider	Semantic Scholar
Author	Keane, Páraic M. Baptista, Frederico R. Gurung, Sarah P. Devereux, Stephen J. Sazanovich, Igor V. Towrie, Michael Brazier, John A. Cardin, Christine J. Kelly, John M. Quinn, Susan J.
Copyright Year	2016
Abstract	UV-generated excited states of cytosine (C) nucleobases are precursors to mutagenic photoproduct formation. The i-motif formed from C-rich sequences is known to exhibit high yields of long-lived excited states following UV absorption. Here the excited states of several i-motif structures have been characterized following 267 nm laser excitation using time-resolved infrared spectroscopy (TRIR). All structures possess a long-lived excited state of ∼300 ps and notably in some cases decays greater than 1 ns are observed. These unusually long-lived lifetimes are attributed to the interdigitated DNA structure which prevents direct base stacking overlap.
File Format	PDF HTM / HTML
DOI	10.1002/cphc.201501183
Alternate Webpage(s)	http://centaur.reading.ac.uk/58037/1/Keane_et_al_ChemPhysChem_2016_accepted.pdf
PubMed reference number	26879336
Alternate Webpage(s)	https://doi.org/10.1002/cphc.201501183
Journal	Medline
Volume Number	17
Issue Number	9
Journal	Chemphyschem : a European journal of chemical physics and physical chemistry
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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