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- W3136102629 abstract "Monoaminoacridines (1-, 2-, 3-, 4-, and 9-aminoacridine) were studied for suitability as matrices in the negative ion mode matrix-assisted laser desorption/ionization mass spectrometry (MALDI(−)-MS) analysis of various samples. This is the first study to examine 1-, 2-, and 4-aminoacridine as potential matrix material candidates for MALDI(−)-MS. In addition, spectral (UV–Vis absorption and fluorescence), proton transfer-related (basicity and autoprotolysis), and crystallization properties of these compounds were characterized experimentally and/or computationally. For testing the capabilities of these aminoacridines as matrix materials, four samples related to cultural heritage materials—stearic acid, colophony resin, dyer’s madder dye, and a resinous case-study sample from a shipwreck—were analyzed with MALDI(−)-MS. A novel algorithm (implemented as an executable Python script) for MS data analysis was developed to compare the five matrix materials and to help mass spectrometrists rapidly identify peaks originating from the sample and matrix material. It was determined that all five of the studied aminoacridines can successfully be used as matrix materials in MALDI(−)-MS analysis. As an interesting finding, in several cases, the best mass spectra were obtained by using a relatively small amount of matrix material mixed with an excess amount of sample. 3- and 4-aminoacridine outperformed the other aminoacridines in the ease of obtaining acceptable spectra, average number of ions identified in the mass spectra, and low dependence of the sample-to-matrix mass ratio on experimental results." @default.
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- W3136102629 date "2021-03-16" @default.
- W3136102629 modified "2023-10-16" @default.
- W3136102629 title "Experimental and Computational Study of Aminoacridines as MALDI(−)-MS Matrix Materials for the Analysis of Complex Samples" @default.
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- W3136102629 doi "https://doi.org/10.1021/jasms.1c00037" @default.
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