Singlet fission in pentacene dimers

Journal article


Publication Details

Author(s): Zirzlmeier J, Lehnherr D, Brana Coto P, Chernick E, Casillas R, Basel B, Thoss M, Tykwinski R, Guldi DM
Journal: Proceedings of the National Academy of Sciences
Publication year: 2015
Volume: 112
Journal issue: 17
Pages range: 5325--5330
ISSN: 0027-8424
eISSN: 1091-6490


Abstract

Singlet fission (SF) has the potential to supersede the traditional solar energy conversion scheme by means of boosting the photon-to-current conversion efficiencies beyond the 30\% Shockley-Queisser limit. Here, we show unambiguous and compelling evidence for unprecedented intramolecular SF within regioisomeric pentacene dimers in room-temperature solutions, with observed triplet quantum yields reaching as high as 156 ± 5\%. Whereas previous studies have shown that the collision of a photoexcited chromophore with a ground-state chromophore can give rise to SF, here we demonstrate that the proximity and sufficient coupling through bond or space in pentacene dimers is enough to induce intramolecular SF where two triplets are generated on one molecule.


FAU Authors / FAU Editors

Basel, Bettina
Lehrstuhl für Physikalische Chemie I
Brana Coto, Pedro Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Chernick, Erin
Sonderforschungsbereich 953/2 Synthetische Kohlenstoffallotrope
Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Thoss, Michael Prof. Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Tykwinski, Rik Prof.
Lehrstuhl für Organische Chemie I
Zirzlmeier, Johannes
Lehrstuhl für Physikalische Chemie I


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials
Interdisziplinäres Zentrum für Molekulare Materialien


External institutions
University of Alberta


How to cite

APA:
Zirzlmeier, J., Lehnherr, D., Brana Coto, P., Chernick, E., Casillas, R., Basel, B.,... Guldi, D.M. (2015). Singlet fission in pentacene dimers. Proceedings of the National Academy of Sciences, 112(17), 5325--5330. https://dx.doi.org/10.1073/pnas.1422436112

MLA:
Zirzlmeier, Johannes, et al. "Singlet fission in pentacene dimers." Proceedings of the National Academy of Sciences 112.17 (2015): 5325--5330.

BibTeX: 

Last updated on 2019-18-03 at 11:53