Influence of Donor‐Substituents on Triphenylamine Chromophores Bearing Pyridine Fragments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914552" target="_blank" >RIV/00216275:25310/19:39914552 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/ejoc.201900026" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/ejoc.201900026</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ejoc.201900026" target="_blank" >10.1002/ejoc.201900026</a>

Result language
angličtina
Original language name
Influence of Donor‐Substituents on Triphenylamine Chromophores Bearing Pyridine Fragments
Original language description
Efficient synthetic routes that combine different palladium-catalyzed cross-coupling reactions have been developed for the preparation of a new family of push-pull derivatives in which pyridine was used as the acceptor group and different para-substituted diphenylamines as the donor groups. All compounds showed absorption in the UV/Vis region and blue-green emission with high quantum yields. Significant red shifts were observed in the absorption and fluorescence emission maxima on increasing the electron-donating ability of the substituents or on incorporating a pi-conjugated linker. This finding can be explained on the basis of enhanced intramolecular charge transfer (ICT). Strong emission solvatochromism confirmed the formation of an intramolecular charge-separated emitting state. The HOMO-LUMO energy gaps have been estimated by experimental electrochemical measurements and the results were interpreted with the aid of DFT calculations. The thermal behavior of all materials has also been studied by differential scanning calorimetry.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10401 - Organic chemistry

Project
<a href="/en/project/EF17_048%2F0007376" target="_blank" >EF17_048/0007376: High sensitive sensors and low density materials based on polymeric nanocomposites - NANOMAT</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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