Biomolecule Analogues 2-Hydroxypyridine and 2-Pyridone Base Pairing on Ice Nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F16%3A00455792" target="_blank" >RIV/61388963:_____/16:00455792 - isvavai.cz</a>

Alternative codes found

RIV/61388955:_____/16:00455792

Result on the web

<a href="http://dx.doi.org/10.1021/acs.jpca.5b11359" target="_blank" >http://dx.doi.org/10.1021/acs.jpca.5b11359</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpca.5b11359" target="_blank" >10.1021/acs.jpca.5b11359</a>

Result language

angličtina

Original language name

Biomolecule Analogues 2-Hydroxypyridine and 2-Pyridone Base Pairing on Ice Nanoparticles

Original language description

Ice nanoparticles (H2O)N, N 450, generated in a molecular beam experiment pick up individual gas phase molecules of 2-hydroxypyridine and 2-pyridone (HP) evaporated in a pickup cell at temperatures between 298-343 K. The mass spectra of the doped nanoparticles show evidence for generation of clusters of adsorbed molecules (HP)n up to n = 8. The clusters are ionized either by 70 eV electrons or by two photons at 315 nm (3.94 eV). The two ionization methods yield different spectra and their comparison provides an insight into the neutral cluster composition, ionization and intracluster ion-molecule reactions, and cluster fragmentation. Quite a few molecules were reported not to coagulate on ice nanoparticles previously. The (HP)n cluster generation on ice nanoparticles represents the first evidence for coagulating of molecules and cluster formation on free ice nanoparticles. For comparison, we investigate the coagulation of HP molecules picked up on large clusters ArN, N 205, and also (HP)n clusters generated in supersonic expansions with Ar buffer gas. This comparison points to a propensity for the (HP)2 dimer generation on ice nanoparticles. This shows the feasibility of base pairing for model of biological molecules on free ice nanoparticles. This result is important for hypotheses of the biomolecule synthesis on ice grains in the space. We support our findings also by theoretical calculations which show, among others, the HP dimer structures on water clusters.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Journal of Physical Chemistry A

ISSN

1089-5639

e-ISSN

—

Volume of the periodical

120

Issue of the periodical within the volume

27

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

4720-4730

UT code for WoS article

000379988900014

EID of the result in the Scopus database

2-s2.0-84978877522