Acceleration of singlet fission in an Aza-derivative of TIPS-pentacene
The influence of the carbon to nitrogen substitution on the photoinduced dynamics of TIPS-pentacene was investigated by ultrafast transient absorption measurements on spin-coated thin films in the visible and in the near-infrared spectral region. A global target analysis was performed to provide a d...
Gespeichert in:
| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
30 June 2014
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| In: |
The journal of physical chemistry letters
Year: 2014, Jahrgang: 5, Heft: 14, Pages: 2425-2430 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/jz501102r |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jz501102r
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| Verfasserangaben: | Julia Herz, Tiago Buckup, Fabian Paulus, Jens Engelhart, Uwe H.F. Bunz, and Marcus Motzkus |
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| 520 | |a The influence of the carbon to nitrogen substitution on the photoinduced dynamics of TIPS-pentacene was investigated by ultrafast transient absorption measurements on spin-coated thin films in the visible and in the near-infrared spectral region. A global target analysis was performed to provide a detailed picture of the excited-state dynamics. We found that the chemical modification has a high impact on the triplet formation and leads to shorter dynamics; hence it speeds up the singlet fission process. A faster relaxation from the singlet into the triplet manifold implies a higher efficiency because other relaxation channels are avoided. The air-stable aza-derivatives have the potential to exceed the energy conversion efficiency of TIPS-pentacene. | ||
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