Laser-induced dissociation processes of protonated glucose: dehydration reactions vs cross-ring dissociation

Y. A. Dyakov; M. A. Kazaryan; M. G. Golubkov; D. P. Gubanova; N. A. Bulychev; S. M. Kazaryan

doi:10.1117/12.2303528

16 April 2018 Laser-induced dissociation processes of protonated glucose: dehydration reactions vs cross-ring dissociation

Y. A. Dyakov, M. A. Kazaryan, M. G. Golubkov, D. P. Gubanova, N. A. Bulychev, S. M. Kazaryan

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Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 1061417 (2018) https://doi.org/10.1117/12.2303528
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia

Abstract

Studying the processes occurring in biological systems under irradiation is critically important for understanding the principles of working of biological systems. One of the main problems, which stimulate interest to the processes of photo-induced excitation and ionization of biomolecules, is the necessity of their identification by various mass spectrometry (MS) methods. While simple analysis of small molecules became a standard MS technique long time ago, recognition of large molecules, especially carbohydrates, is still a difficult problem, and requires sophisticated techniques and complicated computer analysis. Due to the large variety of substances in the samples, as far as the complexity of the processes occurring after excitation/ionization of the molecules, the recognition efficiency of MS technique in terms of carbohydrates is still not high enough. Additional theoretical and experimental analysis of ionization and dissociation processes in various kinds of polysaccharides, beginning from the simplest ones, is necessary. In our work, we extent previous theoretical and experimental studies of saccharides, and concentrate our attention to protonated glucose. In this article we paid the most attention to the cross-ring dissociation and water loss reactions due to their importance for identification of various isomers of hydrocarbon molecules (for example, distinguish α- and β-glucose).

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Y. A. Dyakov, M. A. Kazaryan, M. G. Golubkov, D. P. Gubanova, N. A. Bulychev, and S. M. Kazaryan "Laser-induced dissociation processes of protonated glucose: dehydration reactions vs cross-ring dissociation", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 1061417 (16 April 2018); https://doi.org/10.1117/12.2303528

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KEYWORDS

Glucose

Molecules

Ionization

Ions

Laser processing

Mass spectrometry

Lithium

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