Probing oxygen and nitrogen bonding sites in chitosan by X-ray emission

E. Z. Kurmaev, S. Shin, M. Watanabe, R. Eguchi, Y. Ishiwata, T. Takeuchi, A. Moewes, D. L. Ederer, Y. Gao, M. Iwami, M. Yanagihara

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We present X-ray fluorescence measurements of biopolymer chitosan [C6H11NO4]n and chitosan cross-linked with ethylene glycol diglycidyl ether (EGDE). Changes in the fine structure of resonantly excited O Kα X-ray emission spectra (XES) of unmodified chitosan are attributed to the excitation of non-equivalent oxygen sites belonging to -OH, -O- functional groups. The comparison of the nonresonant nitrogen Kα XES of unmodified chitosan cross-linked with EGDE does not show any differences, which excludes the model of chemical structure according to which EGDE is linked to chitosan via the amine group.

Original languageEnglish
Pages (from-to)133-138
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Issue number2
Publication statusPublished - Aug 2002
Externally publishedYes


  • Chitosan
  • Electronic structure
  • Site-specific absorption
  • Synchrotron radiation
  • X-ray absorption
  • X-ray emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry


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