Abstract:
A continuous liquid flow in a vacuum (a liquid beam) of an aqueous solution of adenine salt containing hydrochloric acid or sodium hydroxide was irradiated with an intense pulsed IR laser at 3 μm, which is resonant to a vibrational mode related to the OH stretch vibration of H2O. Neutral species isolated into the vacuum were ionized by a pulsed UV laser at 270 nm, and the product ions were mass-analyzed by a time-of-flight mass spectrometer. It is found that AH 2 2 + . 2Cl- and [A-iH] i - . iNa+ (i = 1-3) are isolated in the vacuum from the aqueous acidic and alkaline solutions, respectively, under irradiation of the IR laser, and undergo four-photon ionization involving decomposition and proton transfer of the intermediate species under irradiation of the UV laser.
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Received 1st May 2002 Published online 13 September 2002
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Kohno, JY., Mafuné, F. & Kondow, T. Isolation of adenine salts in the gas phase from a liquid beam of aqueous solutions by IR laser irradiation. Eur. Phys. J. D 20, 339–345 (2002). https://doi.org/10.1140/epjd/e2002-00165-4
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DOI: https://doi.org/10.1140/epjd/e2002-00165-4