Quasi-elastic neutron scattering study of hydrated DNA

I. A. Beta, I. Michalarias, R. C. Ford, J. C. Li, M. C. Bellissent-Funel

    Research output: Contribution to journalArticlepeer-review


    Dynamics of water around DNA molecules was studied by incoherent quasi-elastic neutron scattering. The mean residence time is about 10 times higher than for liquid water indicating that mobility of water adsorbed on DNA is reduced very significantly. The mean residence time increases from 10 ps for the sample with 2.5 g water/g DNA to 18 ps for a water content of 0.31 g water/g DNA. The activation energy of diffusion for water in hydrated DNA samples determined by the Arrhenius plot is Ea = 6.9 kcal/mol, a value significantly higher than 4.2 kcal/mol estimated for liquid water. © 2003 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)451-454
    Number of pages3
    JournalChemical Physics
    Issue number2-3
    Publication statusPublished - 1 Aug 2003


    • Biological transport (diffusion; quasi-elastic neutron scattering study of hydrated DNA); Hydration (quasi-elastic neutron scattering study of hydrated DNA); DNA Role: BSU (Biological study, unclassified), PRP (Properties), BIOL (Biological study) (quasi-elastic neutron scattering study of hydrated DNA)


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