A combined atomic and molecular probe characterization of aromatic hydrocarbons via PALS and ESR: methylbenzene
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00552529" target="_blank" >RIV/61389013:_____/22:00552529 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1944/15/2/462" target="_blank" >https://www.mdpi.com/1996-1944/15/2/462</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma15020462" target="_blank" >10.3390/ma15020462</a>
Alternative languages
Result language
angličtina
Original language name
A combined atomic and molecular probe characterization of aromatic hydrocarbons via PALS and ESR: methylbenzene
Original language description
A combined study of one of the simplest aromatic hydrocarbons, i.e., methylbenzene (toluene) (TOL), via the annihilation of an ortho-positronium (o-Ps) probe via positron annihilation lifetime spectroscopy (PALS) and the rotation dynamics of nitroxide spin probe 2,2,6,6-tetramethyl-piperidinyl-1-oxy (TEMPO) using electron spin resonance (ESR) over a wide temperature range, 10–300 K, is reported. The o-Ps lifetime, τ3, and the relative o-Ps intensity, I3, as a function of temperature exhibit changes defining several characteristic PALS temperatures in the slowly and rapidly cooled samples. Similarly, the spectral parameter of TEMPO mobility in TOL, 2Azz‘, and its correlation time, τc, reveal several effects at a set of the characteristic ESR temperatures, which were determined and compared with the PALS results. Finally, the physical origins of the changes in free volume expansion and spin probe mobility are revealed. They are reflected in a series of the mutual coincidences between the characteristic PALS and ESR temperatures and appropriate complementary thermodynamic and dynamic techniques.
Czech name
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Czech description
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Classification
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
10404 - Polymer science
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
15
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
21
Pages from-to
462
UT code for WoS article
000758471200001
EID of the result in the Scopus database
2-s2.0-85122460805