Strong temperature dependence of irradiation effects in organic layers

Radiation damage of self-assembled monolayers, which are prototypes of thin organic layers and highly organized biological systems, shows a strong dependence on temperature. Two limiting cases could be identified. Reactions involving transport of single atoms and small fragments proceed nearly indep...

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Bibliographic Details
Published in:Physical review letters 2004-10, Vol.93 (17), p.178302.1-178302.4, Article 178302
Main Authors: FEULNER, P, NIEDERMAYER, T, EBERLE, K, SCHNEIDER, R, MENZEL, D, BAUMER, A, SCHMICH, E, SHAPORENKO, A, TAI, Y, ZHARNIKOV, M
Format: Article
Language:English
Subjects:
Biomimetic Materials - chemistry
Biomimetic Materials - radiation effects
Cold Temperature
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Gold - chemistry
Macromolecular Substances - chemistry
Macromolecular Substances - radiation effects
Membrane Lipids - chemistry
Membrane Lipids - radiation effects
Physical radiation effects, radiation damage
Physics
Polymers - chemistry
Polymers - radiation effects
Structure of solids and liquids
crystallography
Sulfhydryl Compounds - chemistry
Temperature
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Summary:Radiation damage of self-assembled monolayers, which are prototypes of thin organic layers and highly organized biological systems, shows a strong dependence on temperature. Two limiting cases could be identified. Reactions involving transport of single atoms and small fragments proceed nearly independent of temperature. Reactions requiring transport of heavy fragments are, however, efficiently quenched by cooling. We foresee the combined use of temperature and irradiation by electrons or photons for advanced tailoring of self-assembled monolayers on surfaces. In addition, our results have direct implications for cryogenic approaches in advanced electron and x-ray microscopy and spectroscopy of biological macromolecules and cells.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.178302