Singlet Fission in Concentrated TIPS-Pentacene Solutions: The Role of Excimers and Aggregates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F21%3A00356654" target="_blank" >RIV/68407700:21340/21:00356654 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1021/jacs.1c05767" target="_blank" >https://doi.org/10.1021/jacs.1c05767</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jacs.1c05767" target="_blank" >10.1021/jacs.1c05767</a>

Result language
angličtina
Original language name
Singlet Fission in Concentrated TIPS-Pentacene Solutions: The Role of Excimers and Aggregates
Original language description
The excited-state dynamics of 6,13-bis(triisopropylsilylethynyl)pentacene is investigated to determine the role of excimer and aggregate formation in singlet fission in high-concentration solutions. Photoluminescence spectra were measured by excitation with the evanescent wave in total internal reflection, in order to avoid reabsorption effects. The spectra over nearly two magnitudes of concentration were nearly identical, with no evidence for excimer emission. Time-correlated single-photon counting measurements confirm that the fluorescence lifetime shortens with concentration. The observed rate constant grows at high concentrations, and this effect is modeled in terms of the hard-sphere radial distribution function.
Czech name
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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
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OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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