Clustering of Uracil Molecules on Ice Nanoparticles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00471301" target="_blank" >RIV/61388955:_____/17:00471301 - isvavai.cz</a>
Alternative codes found
RIV/61388963:_____/17:00471301
Result on the web
<a href="http://dx.doi.org/10.1021/acs.jpca.6b12594" target="_blank" >http://dx.doi.org/10.1021/acs.jpca.6b12594</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpca.6b12594" target="_blank" >10.1021/acs.jpca.6b12594</a>

Result language
angličtina
Original language name
Clustering of Uracil Molecules on Ice Nanoparticles
Original language description
We generate a molecular beam of ice nano particles (H2O)(N), N approximate to 130-220, which picks up several individual gas phase uracil' (U) or 5-bromouracil (BrU) molecules. The mass spectra of the doped nanoparticles prove that the uracil and bromouracil molecules coagulate to clusters on the ice nanoparticles. Calculations of U and BrU monomers and dimers on the ice nanoparticles provide theoretical support for the cluster formation. The (U)(m) H+ and (BrU)(m)H+ intensity dependencies on m extracted from the mass spectra suggest a smaller tendency of BrU to coagulate compared to U, which is substantiated by a lower mobility of bromouracil on the ice surface. The hydrated U-m.(H2O) H-n(+) series are also reported and discussed. On the basis of comparison with the previous experiments, we suggest that the observed propensity for aggregation on ice nanoparticles is a more general trend for biomolecules forming strong hydrogen bonds. This, together with their mobility, leads to their coagulation on ice nanopartides which is an important aspect for astrochemistry.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/GA14-14082S" target="_blank" >GA14-14082S: Molecular dynamics of essential building blocks of biomolecules: experiments in molecular beams and theory.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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