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UV-Induced Adenine Radicals Induced in DNA A-Tracts: Spectral and Dynamical Characterization (18 views)

Banyasz A, Ketola TM, Munoz-losa A, Rishi S, Adhikary A, Sevilla MD, Martinez-fernandez L, Improta R, Markovitsi D

J Phys Chem Lett (ISSN: 1948-7185electronic, 1948-7185linking), 2016 Oct 06; 7(19): 3949-3953.

Abstract
Adenyl radicals generated in DNA single and double strands, (dA)20 and (dA)20.(dT)20, by one- and two-photon ionization by 266 nm laser pulses decay at 600 nm with half-times of 1.0 +/- 0.1 and 4 +/- 1 ms, respectively. Though ionization initially forms the cation radical, the radicals detected for (dA)20 are quantitatively identified as N6-deprotonated adenyl radicals by their absorption spectrum, which is computed quantum mechanically employing TD-DFT. Theoretical calculations show that deprotonation of the cation radical induces only weak spectral changes, in line with the spectra of the adenyl radical cation and the deprotonated radical trapped in low temperature glasses.

Affiliations ▼
*** IBB - CNR Affiliation

LIDYL, CEA, CNRS, Universite Paris-Saclay , F-91191 Gif-sur-Yvette, France., Department of Chemistry, Oakland University , Rochester, Michigan 48309, United States., Istituto Biostrutture e Bioimmagini-Consiglio Nazionale delle Ricerche, Via Mezzocannone 16, I-80134 Napoli, Italy.,

Details ▼
Impact factor: 9.353, 5-year impact factor: 8.334

Paper type: Journal Article,

Keywords: Not available.

Url: Not available.

References ▼
Not available.

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* Photoinduced Electron Transfer in DNA: Charge Shift Dynamics between 8-Oxo-Guanine Anion and Adenine (83 views)
Zhang Y, Dood J, Beckstead AA, Li X-B, Nguyen KV, Burrows CJ, Improta R, Kohler B
J Phys Chem B (ISSN: 1520-6106, 1520-5207, 1520-5207electronic), 2015; 119(24): 7491-7502.
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1 Records (1 excluding Abstracts and Conferences).
Total impact factor: 3.187 (3.187 excluding Abstracts and Conferences).
Total 5-year impact factor: 3.265 (3.265 excluding Abstracts and Conferences).



Your bibliography query: (([btitle, keywords, abstract] INDUCED AND [btitle, keywords, abstract] ADENINE AND [btitle, keywords, abstract] RADICALS)) AND NOT [id] = 53472



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