Ionization of carboxylic acid clusters in the gasphase and on free ArN and (H2O)N nanoparticles: valeric acid as a model for small carboxylic acids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00507771" target="_blank" >RIV/61388955:_____/19:00507771 - isvavai.cz</a>

Result on the web

<a href="http://hdl.handle.net/11104/0298741" target="_blank" >http://hdl.handle.net/11104/0298741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9cp03279g" target="_blank" >10.1039/c9cp03279g</a>

Result language

angličtina

Original language name

Ionization of carboxylic acid clusters in the gasphase and on free ArN and (H2O)N nanoparticles: valeric acid as a model for small carboxylic acids

Original language description

We investigate ionization of valeric (n-pentanoic) acid clusters both in the gas phase and on argon and water nanoparticles using mass spectrometry. Compared to the ionization of a single valeric acid molecule, new reaction channels are observed in clusters, mostly attributed to proton transfer between two valeric acid molecules and formation of valeric anhydride. These reactions are also observed when valeric acid molecules are deposited and generate clusters on ArN, and are independent of the ionization method, whether electron ionization or photoionization is used. Valeric acid clusters exhibit a high water affinity, both in neutral clusters and after ionization. When valeric acid is adsorbed on (H2O)M ice nanoparticles, no new specific reactions with water are observed. However, in this case, electron ionization yields mostly protonated water clusters while the photoionization spectrum does not differ significantly from free and ArN-deposited valeric acid clusters. Based on quantum chemical calculations, we extrapolate our results to carboxylic acids with 1–8 carbon atoms. The calculations show that the high affinity to water can be expected in the whole investigated size range while the highest probability of anhydride formation is predicted for n = 3–6. The observed reaction patterns in the ionization of valeric acid are thus prototypical for ionization of clusters of short-chain fatty acids.n

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/GA17-04068S" target="_blank" >GA17-04068S: Molecular Clusters as Unique Nano-reactors: Controlling Chemistry with Photons and Electrons</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Volume of the periodical

21

Issue of the periodical within the volume

35

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

19201-19208

UT code for WoS article

000486175400032

EID of the result in the Scopus database

2-s2.0-85072058070