Abstract:In this work, the proton transfer and photophysical properties of 2,4-dihydroxybenzoic acid and its chlorinated and brominated derivatives were studied using Density Functional Theory (DFT) to understand the proton transfer mechanism of these molecules as matrices in matrix-assisted laser desorption-ionization (MALDI). Structures, IR, UV-Vis, and fluorescence spectra were obtained together with the energies of frontier orbitals from DFT and time-dependent DFT calculations. In addition, the proton affinity (PA)… Show more
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