Gas-phase potassium binding energies of MALDI matrices

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Author(s) Zhang, Juan, Dyachokva, Evgueniya, Ha, Tae-Kyu, Knochenmuss, Richard, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Gas-phase potassium binding energies of MALDI matrices
Subtitle An experimental and theoretical study
Author(s) Zhang, Juan
Dyachokva, Evgueniya
Ha, Tae-Kyu
Knochenmuss, Richard
Zenobi, Renato
Journal or Series Title The journal of physical chemistry A
Volume Number 107
Issue Number 35
Start Page 6891
End Page 6900
ISSN 1089-5639
Publisher American Chemical Society
Publication Place Washington, DC
Publication Date 2003-09
Abstract Gas-phase potassium binding free energies of four aromatic molecules, which are used as matrices in the matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, were determined experimentally by the ligand-exchange equilibrium method in a Fourier transform ion cyclotron mass spectrometer (FT ICR MS). The matrices studied were 2,5-dihydroxybenzoic acid, 2,4,6-trihydroxyacetophenone, trans-3,5-dimethoxy-4-hydroxycinnamic acid, and 1,8,9-trihydroxyanthrancene. In addition to the experimental values, we also present quantum chemical results obtained by the density functional theory (DFT) at the 6-31+G* level. The Gas-phase potassium binding free energies of the MALDI matrices studied in this work are in the range of 90-105 kJ mol(-1).
DOI 10.1021/jp0301204
Additional Notes Received 29 January 2003
Document Type Article
Publication Status Published
Language English
NEBIS System Number 001723124
Source Database ID WOS-000185034600019
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  author = "Zhang, Juan and Dyachokva, Evgueniya and Ha, Tae-Kyu and Knochenmuss, Richard and Zenobi, Renato",
  title = "{G}as-phase potassium binding energies of {M}{A}{L}{D}{I} matrices: {A}n experimental and theoretical study",
  journal = "The journal of physical chemistry A",
  year = 2003,
  volume = "107",
  number = "35",
  pages = "6891--6900",
  month = sep,

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