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Radiation chemistry of solid-state carbohydrates using EMR

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Abstract
We review our research of the past decade towards identification of radiation-induced radicals in solid state sugars and sugar phosphates. Detailed models of the radical structures are obtained by combining EPR and ENDOR experiments with DFT calculations of g and proton HF tensors, with agreement in their anisotropy serving as most important criterion. Symmetry-related and Schonland ambiguities, which may hamper such identification, are reviewed. Thermally induced transformations of initial radiation damage into more stable radicals can also be monitored in the EPR (and ENDOR) experiments and in principle provide information on stable radical formation mechanisms. Thermal annealing experi-ments reveal, however, that radical recombination and/or diamagnetic radiation damage is also quite important. Analysis strategies are illustrated with research on sucrose. Results on dipotassium glucose-1-phosphate and trehalose dihydrate, fructose and sorbose are also briefly discussed. Our study demonstrates that radiation damage is strongly regio-selective and that certain general principles govern the stable radical formation.
Keywords
Free Radicals, Radiation Damage, Glucose-1-phosphate, Fructose, Sorbose, Electron Magnetic Resonance (EPR/ENDOR), Single crystals, Sucrose, Trehalose

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Citation

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Chicago
Vrielinck, Henk, Hendrik De Cooman, Freddy Callens, and Einar Sagstuen. 2014. “Radiation Chemistry of Solid-state Carbohydrates Using EMR.” In Applications of EPR in Radiation Research, ed. Anders Lund and Masaru Shiotani, 189–254. Cham, Switzerland: Springer.
APA
Vrielinck, H., De Cooman, H., Callens, F., & Sagstuen, E. (2014). Radiation chemistry of solid-state carbohydrates using EMR. In A. Lund & M. Shiotani (Eds.), Applications of EPR in radiation research (pp. 189–254). Cham, Switzerland: Springer.
Vancouver
1.
Vrielinck H, De Cooman H, Callens F, Sagstuen E. Radiation chemistry of solid-state carbohydrates using EMR. In: Lund A, Shiotani M, editors. Applications of EPR in radiation research. Cham, Switzerland: Springer; 2014. p. 189–254.
MLA
Vrielinck, Henk, Hendrik De Cooman, Freddy Callens, et al. “Radiation Chemistry of Solid-state Carbohydrates Using EMR.” Applications of EPR in Radiation Research. Ed. Anders Lund & Masaru Shiotani. Cham, Switzerland: Springer, 2014. 189–254. Print.
@incollection{5777273,
  abstract     = {We review our research of the past decade towards identification of  radiation-induced radicals in solid state sugars and sugar phosphates. Detailed models of the radical structures are obtained by combining EPR and ENDOR experiments with DFT calculations of g and proton HF tensors, with agreement in their anisotropy serving as most important criterion. Symmetry-related and Schonland ambiguities, which may hamper such identification, are reviewed. Thermally induced transformations of initial radiation damage into more stable radicals can also be monitored in the EPR (and ENDOR) experiments and in principle provide information on stable radical formation mechanisms. Thermal annealing experi-ments reveal, however, that radical recombination and/or diamagnetic radiation damage is also quite important. Analysis strategies are illustrated with research on sucrose. Results on dipotassium glucose-1-phosphate and trehalose dihydrate, fructose and sorbose are also briefly discussed. Our study demonstrates that radiation damage is strongly regio-selective and that certain general principles govern the stable radical formation.},
  author       = {Vrielinck, Henk and De Cooman, Hendrik and Callens, Freddy and Sagstuen, Einar},
  booktitle    = {Applications of EPR in radiation research},
  editor       = {Lund, Anders and Shiotani, Masaru},
  isbn         = {9783319092164},
  language     = {eng},
  pages        = {189--254},
  publisher    = {Springer},
  title        = {Radiation chemistry of solid-state carbohydrates using EMR},
  url          = {http://dx.doi.org/10.1007/978-3-319-09216-4\_6},
  year         = {2014},
}

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