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

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Excited-state relaxation of protonated adenine

Cited 16 times inthomson ciCited 14 times inthomson ci
Title
Excited-state relaxation of protonated adenine
Author
Nolting, DirkWeinkauf, RainerHertel, I.V.Schultz, Thomas
Keywords
Conical intersections; Heterocycles; Nucleobases; Protonation; Time-resolved spectroscopy
Issue Date
200704
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMPHYSCHEM, v.8, no.5, pp.751 - 755
Abstract
The excited state dynamics of protonated adenine in the gas phase were investigated by femtosecond pump-probe transient mass spectroscopy. Adenine was protonated in an electrosproy ionization source and transferred to a Paul trap. Two femtosecond laser pulses at 266 nm and 800 nm excited the lowest electronic pi pi* state and probed the excited-state dynamics by monitoring ion fragment formation. The measured excited state decay is monoexponential with a lifetime shorter than 161 fs. This agrees with a theoretical prediction of very fast internal conversion via a conical intersection with the ground state.
URI
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DOI
http://dx.doi.org/10.1002/cphc.200600727
ISSN
1439-4235
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