Clustering of Uracil Molecules on Ice Nanoparticles

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61388963:_____/17:00471301

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Clustering of Uracil Molecules on Ice Nanoparticles

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Clustering of Uracil Molecules on Ice Nanoparticles

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA14-14082S" target="_blank" >GA14-14082S: Molekulární dynamika stavebních jednotek biomolekul: teorie a experimenty v molekulových paprscích.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry A

ISSN

1089-5639

e-ISSN

—

Svazek periodika

121

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1069-1077

Kód UT WoS článku

000393928200017

EID výsledku v databázi Scopus

2-s2.0-85026810364