여름정기학술대회
2022여름초록
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Distinguishing methyladenines using water adduction to lithiated molecule
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공동저자
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We have
investigated the hydration properties of lithium complexes of methyladenines
(3-methyladenine; 3MA, 7-methyladenine; 7MA, 9-methyladenine; 9MA) using a
quadrupole ion trap (QIT) mass spectrometer. Methyladenines complexed with a
lithium cation were introduced into the vacuum system using electrospray
ionization (ESI) and were isolated using MS/MS to react with water molecules
within the quadrupole ion trap (QIT). The reaction time changed from 0 to 5
seconds, and the mass spectra after the reaction were recorded as a function of
the reaction time. The decay curve of each methyladenine was obtained by
measuring the fraction of ion intensity of [M+Li]+ (156m/z) over the total
intensity of [M+Li]+ and [M+Li+H2O]+ (174m/z). The decay curves of lithium
complexes of 3MA, 7MA, and 9MA showed distinct values in the decay time
constants and the non-reacted fraction determined by the asymptote of hydration
decay curve. We will discuss the differences in hydration dynamics of different
methyladenine complexes with a lithium cation based on the different hydration
decay time constants and fractions of non-reacted species.
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