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Schultz, Thomas
CRASY(Correlated Rotational Alignment Spectroscopy)
Research Interests
  • Correlated spectroscopy

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Excited-State Dynamics of Cytosine Tautomers

Cited 30 times inthomson ciCited 27 times inthomson ci
Title
Excited-State Dynamics of Cytosine Tautomers
Author
Kosma, KyriakiSchroeter, ChristianSamoylova, ElenaHertel, Ingolf VolkerSchultz, Thomas
Keywords
Ab initio theory; Excited-state dynamics; Femtoseconds; Imino tautomers; Internal conversions; Picoseconds; Relaxation dynamics; Tautomerizations; Wavelength ranges
Issue Date
200910
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.131, no.46, pp.16939 - 16943
Abstract
We report the relaxation dynamics of keto and enol or keto-imino cytosine, photoexcited in the wavelength range of 260-290 nm. Three transients with femtosecond to hundreds of picosends lifetimes are observed for the biologically relevant keto tautomer and are assigned to internal conversion and excited-state tautomerization. Only two transients with femtosecond and picosecond lifetimes are identified for the enol or keto-imino tautomer and are assigned to internal conversion processes. The results are discussed in the context of published ab initio theory.
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DOI
http://dx.doi.org/10.1021/ja907355a
ISSN
0002-7863
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