Open AccessX‐ray absorption near‐edge structure (XANES) spectral changes of 2‐deoxy‐D‐ribose by irradiation within the energy region around the oxygen K ‐shell absorption edge
Author(s) -
Akamatsu Ken,
Yokoya Akinari
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500015478
Subject(s) - xanes , absorption (acoustics) , irradiation , extended x ray absorption fine structure , absorption edge , ribose , chemistry , oxygen , k edge , absorption spectroscopy , analytical chemistry (journal) , crystallography , spectral line , materials science , optics , physics , organic chemistry , optoelectronics , astronomy , band gap , nuclear physics , enzyme , composite material
The physicochemical characteristics of 2‐deoxy‐D‐ribose moieties in DNA strands are important to understand biological radiation stress. So, the X‐ray absorption near edge structure (XANES) of 2‐deoxy‐D‐ribose within the energy region around the oxygen K‐shell absorption edge was measured. 2‐deoxy‐D‐ribose was exposed to 3 energies of X‐rays, i.e. 526.3 eV (below O 1s→σ*), 537.8 eV (at the absorption peak of O 1s→σ*) and 552.6 eV (above O 1s→σ*) for given periods. Slight differences in spectral changes were seen in the each irradiation energy, suggesting in fact that the chemical state and following rearranged chemical structure of 2‐deoxy‐D‐ribose may be different between the three irradiation energies.