Issue 10, 2001
From the journal:

Physical Chemistry Chemical Physics

Excited state spectroscopy and dynamics of isolated adenine and 9-methyladenine

D. C. Lührs,a   J. Viallona  and  I. Fischer†a  

a Laboratorium für Organische Chemie, ETH Zürich, Uniersitätstrasse 16, Zürich
E-mail: fischer@org.chem.ethz.ch

Abstract

We report electronic spectra of the DNA base adenine and its derivative 9-methyladenine in a molecular beam, using [1 + 1] resonantly enhanced multiphoton ionisation. In addition an excited state lifetime of adenine was determined by picosecond time-resolved [1 + 1′] photoionisation. The spectrum of adenine is dominated by a band at 36105 cm−1, with several low-frequency bands nearby. A comparison with the spectrum of 9-methyladenine with its origin at 36136 cm−1 confirms that the electronic spectrum of adenine is dominated by the π → π* transition of the N9–H tautomer. Several bands observed before and assigned to a n → π* transition were not observed. For the most intense band of adenine at 36105 cm−1 we determined an excited state lifetime of 9 ps.

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Article information

DOI
https://doi.org/10.1039/B101191J
Article type
Paper
Submitted
06 Feb 2001
Accepted
16 Mar 2001
First published
06 Apr 2001

Phys. Chem. Chem. Phys., 2001,3, 1827-1831

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Excited state spectroscopy and dynamics of isolated adenine and 9-methyladenine

D. C. Lührs, J. Viallon and I. Fischer, Phys. Chem. Chem. Phys., 2001, 3, 1827 DOI: 10.1039/B101191J

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