New insight into the thermal stability of the amorphous tetraphenyl-diamine (TPD) - A combined calorimetry/in-situ Raman microscopy study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39922010" target="_blank" >RIV/00216275:25310/24:39922010 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0254058424010319?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0254058424010319?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchemphys.2024.129903" target="_blank" >10.1016/j.matchemphys.2024.129903</a>
Alternative languages
Result language
angličtina
Original language name
New insight into the thermal stability of the amorphous tetraphenyl-diamine (TPD) - A combined calorimetry/in-situ Raman microscopy study
Original language description
Non-isothermal differential scanning calorimetry (DSC) was used to study the influences of particle size d(aver) and heating rate q(+) on the crystal growth and decomposition kinetics of amorphous N,N'-bis(3-methylphenyl)-N,N'-bis(phenyl)-benzidine (TPD). The macroscopic crystallization kinetics was found to be strongly dependent on q(+). At high q(+), the crystal growth proceeded dominantly from the mechanical defects acting as primary growth centers, with the corresponding activation energy being similar to 70-80 kJ mol(-1). At low q(+), the crystalline phase was primarily formed from heterogeneous nuclei, with the activation energy for the growth process being similar to 980 kJ mol(-1). The prolonged nucleation led to extensive passivation of the surface mechanical defects with respect to their function as direct crystal-growth-accelerating centers. Temperature-resolved in-situ Raman microscopy has confirmed the conclusions derived from the DSC data and helped to identify the residual low-q(+) defects-originating crystal growth as proceeding from volume-located micro-cracks. The X-ray diffraction analysis confirmed that TPD crystallizes into an identical phase under all circumstances. The thermal decomposition of TPD was found to proceed in a single step, by simple nth-order reaction kinetics with the activation energy of similar to 120 kJ mol(-1).
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
20501 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Chemistry and Physics
ISSN
0254-0584
e-ISSN
1879-3312
Volume of the periodical
327
Issue of the periodical within the volume
November 2024
Country of publishing house
CH - SWITZERLAND
Number of pages
14
Pages from-to
129903
UT code for WoS article
001316900300001
EID of the result in the Scopus database
2-s2.0-85202343852