Journal article
A positron annihilation study of hydrated DNA
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Positron annihilation measurements are reported for hydrated DNA as a function of water content and as a function of temperature (20 to -180.degree. C) for samples containing 10 and 50% wt of water. The ortho-positronium mean lifetime and its intensity show distinct variations with the degree of hydration and with temperature for the 50% sample.
The 10% water sample was relatively insensitive to temperature variation. The results indicate that hydrated DNA containing up to 10% water behaves as a rigid crystalline solid but that the rigidity markedly decreases with a further increase in water content until, for approximately 50% water, its properties resemble more those of a highly viscous fluid.
Language: | English |
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Year: | 1986 |
Pages: | 1865-1874 |
ISSN: | 10970282 and 00063525 |
Types: | Journal article |
DOI: | 10.1002/bip.360251005 |
ORCIDs: | Eldrup, Morten Mostgaard |