Singlet fission in pentacene dimers

Zirzlmeier J, Lehnherr D, Brana Coto P, Chernick E, Casillas R, Basel B, Thoss M, Tykwinski R, Guldi DM (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Proceedings of the National Academy of Sciences of the United States of America National Academy of Sciences

Book Volume: 112

Pages Range: 5325--5330

Volume: 112

Issue: 17

Journal Issue: 17

DOI: 10.1073/pnas.1422436112

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.

Authors with CRIS profile

Johannes Zirzlmeier Lehrstuhl für Physikalische Chemie I Pedro Brana Coto Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien Erin Chernick Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Ruben Casillas Pacheco Lehrstuhl für Physikalische Chemie I Bettina Basel Lehrstuhl für Physikalische Chemie I Michael Thoss Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien Rik Tykwinski Lehrstuhl für Organische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

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

Involved external institutions

University of Alberta CA Canada (CA)

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 of the United States of America, 112(17), 5325--5330. https://doi.org/10.1073/pnas.1422436112

MLA:

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

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