The role of branching in the ultrafast dynamics and two-photon absorption of two pyrimidine push-pull molecules
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F75081431%3A_____%2F25%3A00002883" target="_blank" >RIV/75081431:_____/25:00002883 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/25:39923155
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2025/cp/d5cp00589b" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/cp/d5cp00589b</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The role of branching in the ultrafast dynamics and two-photon absorption of two pyrimidine push-pull molecules
Original language description
The dynamics and two-photon absorption (2PA) properties of two pyrimidine chromophores are studied using femtosecond time-resolved fluorescence and two-photon excited fluorescence techniques. The pyrimidine is used as an electron withdrawing group and is substituted at the C2 position with a phenylacridan fragment, while diphenylaministyryl donor moieties are appended at positions C4/6 to afford the pseudo-dipolar and pseudo-quadrupolar molecules 1 and 2, respectively. Chromophore 2 shows more efficient fluorescence emission, while 1 exhibits larger Stokes shifts. Their decay pathways are discussed through an emission from a Franck–Condon charge transfer (FC-CT) and a relaxed charge transfer (R-CT) state. Ultrafast dynamics in tetrahydrofuran show population of the R-CT state for 1 that is faster than solvation, while for 2, due to its pseudo-quadrupolar nature, R-CT population is slower and occurs from the solvated FC-CT state. Finally, molecule 2 shows better 2PA properties with cross sections reaching 560 GM at 820 nm
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
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/EH23_021%2F0008593" target="_blank" >EH23_021/0008593: Innovative materials with high added value suitable for applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Phyiscal Chemistry Chemical Physics
ISSN
1463-9076
e-ISSN
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Volume of the periodical
27
Issue of the periodical within the volume
22
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
11649-11658
UT code for WoS article
001493449200001
EID of the result in the Scopus database
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