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Photostability of Isolated and Paired Nucleobases: NH Dissociation of Adenine and Hydrogen Transfer in its Base Pairs Examined by Laser Spectroscopy
Author(s) -
Hünig Isabel,
Plützer Christian,
Seefeld Kai A.,
Löwenich Dennis,
Nispel Michael,
Kleinermanns Karl
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200400142
Subject(s) - nucleobase , dissociation (chemistry) , photodissociation , chemistry , dimer , hydrogen atom , photochemistry , hydrogen , spectroscopy , ionization , hydrogen bond , dna , molecule , ion , organic chemistry , biochemistry , physics , quantum mechanics , alkyl
A stable genetic code: The authors present the first spectroscopic proof of UV‐light‐induced NH dissociation in the nucleobase adenine and hydrogen transfer in its dimer in the gas phase (see picture). The NH dissociation is investigated by UV photolysis of adenine followed by 2+1 resonant multiphoton ionisation of neutral hydrogen‐atom photoproducts under collisionless conditions.