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Ultraviolet Photodissociation Induced by Light‐Emitting Diodes in a Planar Ion Trap
Author(s) -
Holden Dustin D.,
Makarov Alexander,
Schwartz Jae C.,
Sanders James D.,
Zhuk Eugene,
Brodbelt Jennifer S.
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201605850
Subject(s) - photodissociation , ultraviolet , mass spectrometry , light emitting diode , ion , diode , optoelectronics , irradiation , chemistry , ion trap , ion trapping , trapping , orbitrap , ultraviolet light , materials science , photochemistry , physics , ecology , organic chemistry , chromatography , nuclear physics , biology
The first application of light‐emitting diodes (LEDs) for ultraviolet photodissociation (UVPD) mass spectrometry is reported. LEDs provide a compact, low cost light source and have been incorporated directly into the trapping cell of an Orbitrap mass spectrometer. MS/MS efficiencies of over 50 % were obtained using an extended irradiation period, and UVPD was optimized by modulating the ion trapping parameters to maximize the overlap between the ion cloud and the irradiation volume.