Singlet Fission and Excimer Formation in Disordered Solids of Alkyl-Substituted 1,3-Diphenylisobenzofurans
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F17%3A00506384" target="_blank" >RIV/61388963:_____/17:00506384 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.jpca.7b07362" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpca.7b07362</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpca.7b07362" target="_blank" >10.1021/acs.jpca.7b07362</a>
Alternative languages
Result language
angličtina
Original language name
Singlet Fission and Excimer Formation in Disordered Solids of Alkyl-Substituted 1,3-Diphenylisobenzofurans
Original language description
We describe the preparation and excited state dynamics of three alkyl derivatives of 1,3-diphenylisobenzofuran (1) in both solutions and thin films. The substitutions are intended to disrupt the slip-stacked packing observed in crystals of 1 while maintaining the favorable energies of singlet and triplet for singlet fission (SF). All substitutions result in films that are largely amorphous as judged by the absence of strong X-ray diffraction peaks. The films of 1 carrying a methyl in the para position of one phenyl ring undergo SF relatively efficiently (>= 75% triplet yield, (Phi(T)) but more slowly than thin films of 1. When the methyl is replaced with a t-butyl, kinetic competition in the excited state favors excimer formation rather than SF (Phi(T) = 55%). When t-Bu groups are placed in both meta positions of the phenyl substituent, SF is slowed further and Phi(T) = 35%.
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/GA15-19143S" target="_blank" >GA15-19143S: Singlet Fission</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry A
ISSN
1089-5639
e-ISSN
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Volume of the periodical
121
Issue of the periodical within the volume
45
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
8596-8603
UT code for WoS article
000416203500006
EID of the result in the Scopus database
2-s2.0-85034588519