Triplet Formation and Triplet‐Triplet Annihilation Upconversion in Iodine Substituted Non‐Orthogonal BODIPY‐Perylene Dyads
Abstrakt
BODIPY-perylene dyads have emerged as useful metal free sensitizers for triplet-triplet annihilation upconversion (TTAUC), these dyads are capable of efficient triplet generation via spinorbit charge transfer intersystem crossing (SOCT-ISC). This important route to triplet formation requires dyads in which two moieties are oriented perpendicular to each other. In this contribution, we give a deeper insight on the behavior of recently reported BODIPY-perylene dyads, where BODIPY-perylene dihedral exhibits a non-orthogonal dyad geometry. The intersystem crossing of BODIPY-perylene dyads with and without iodine are investigated using femtosecond transient absorption (fs-TA) and nanosecond transient absorption (ns-TA) spectroscopy. The concurrent decay of the singlet charge transfer state (1CT) and rise of triplet states in both the iodinated and non-iodinated dyads confirms the SOCT-ISC as the main intersystem crossing pathway despite the altered geometry of the dyads. The presence of an iodine atom on the BODIPY-moiety enables intersystem crossing 2.6-times faster and provides a higher triplet yield with respect to dyad without iodine. The upconversion quantum yield is 8.4-times higher in the sample containing iodinated dyad as sensitizer and perylene as annihilator. The triplet-triplet energy transfer rate (kTTET) is ~8×10^8 M-1.s-1 for both iodinated and noniodinated sensitizer containing TTAUC systems in 1,4-dioxane.
Cytowania
-
1
CrossRef
-
0
Web of Science
-
1
Scopus
Autorzy (11)
Cytuj jako
Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1002/cptc.202300073
- Licencja
-
otwiera się w nowej karcie
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
ChemPhotoChem
strony 1 - 9,
ISSN: 2367-0932 - Język:
- angielski
- Rok wydania:
- 2023
- Opis bibliograficzny:
- Kumar Jha K., Prabhakaran A., Sia R. C., Arellano-Reyes R. A., Kumar Sarangi N., Yang T., Kumar K., Kupfer S., Guthmuller J., Keyes T. E., Dietzek-Ivanšić B.: Triplet Formation and Triplet‐Triplet Annihilation Upconversion in Iodine Substituted Non‐Orthogonal BODIPY‐Perylene Dyads// ChemPhotoChem -,iss. 10 (2023), s.1-9
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1002/cptc.202300073
- Źródła finansowania:
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 36 razy
Publikacje, które mogą cię zainteresować
BODIPY‐Perylene Charge Transfer Compounds; Sensitizers for Triplet‐Triplet Annihilation Up‐conversion
- R. A. Arellano-Reyes,
- A. Prabhakaran,
- R. C. Sia
- + 6 autorów
Diiodo-BODIPY Sensitizing of the [Mo3S13]2– Cluster for Noble-Metal-Free Visible-Light-Driven Hydrogen Evolution within a Polyampholytic Matrix
- D. Costabel,
- A. Nabiyan,
- A. Chettri
- + 9 autorów
Photophysics of Untethered ZnTPP-Fullerene Complexes in Solution
- S. K. Sugunan,
- B. Robotham,
- R. P. Sloan
- + 4 autorów