New Method for Double-Resonance Spectroscopy in a Cold Quadrupole Ion Trap and Its Application to UV–UV Hole-Burning Spectroscopy of Protonated Adenine Dimer | Zendy

Hyuk Kang | Zendy; Géraldine Féraud | Zendy; C. DedonderLardeux | Zendy; Christophe Jouvet | Zendy

Open Access

New Method for Double-Resonance Spectroscopy in a Cold Quadrupole Ion Trap and Its Application to UV–UV Hole-Burning Spectroscopy of Protonated Adenine Dimer

Author(s) -

Hyuk Kang,

Géraldine Féraud,

C. DedonderLardeux,

Christophe Jouvet

Publication year - 2014

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/jz5012466

Subject(s) - spectroscopy , chemistry , ion trap , quadrupole ion trap , excited state , ion , protonation , quadrupole , resonance (particle physics) , atomic physics , mass spectrometry , analytical chemistry (journal) , physics , organic chemistry , chromatography , quantum mechanics

A novel method for double-resonance spectroscopy in a cold quadrupole ion trap is presented, which utilizes dipolar resonant excitation of fragment ions in the quadrupole ion trap. Photofragments by a burn laser are removed by applying an auxiliary RF to the trap, and a probe laser detects the depletion of photofragments by the burn laser. By scanning the wavelength of the burn laser, conformation-specific UV spectrum of a cold ion is obtained. This simple and powerful method is applicable to any type of double-resonance spectroscopy in a cold quadrupole ion trap and was applied to UV-UV hole-burning spectroscopy of protonated adenine dimer. It was found that protonated adenine dimer has multiple conformers/tautomers, each with multiple excited states with drastically different excited state dynamics.

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