Unified model for singlet fission within a non-conjugated covalent pentacene dimer

Bettina S. Basel; Johannes Zirzlmeier; Constantin Hetzer; Brian T. Phelan; Matthew D. Krzyaniak; S. Rajagopala Reddy; Pedro B. Coto; Noah E. Horwitz; Ryan M. Young; Fraser J. White; Frank Hampel; Timothy Clark; Michael Thoss; Rik R. Tykwinski; Michael R. Wasielewski; Dirk M. Guldi

doi:10.1038/ncomms15171

Unified model for singlet fission within a non-conjugated covalent pentacene dimer

Bettina S. Basel, Johannes Zirzlmeier, Constantin Hetzer, Brian T. Phelan, Matthew D. Krzyaniak, S. Rajagopala Reddy, Pedro B. Coto, Noah E. Horwitz, Ryan M. Young, Fraser J. White, Frank Hampel, Timothy Clark, Michael Thoss, Rik R. Tykwinski, Michael R. Wasielewski, Dirk M. Guldi

Northwestern University

Research output: Contribution to journal › Article

91 Citations (Scopus)

Abstract

When molecular dimers, crystalline films or molecular aggregates absorb a photon to produce a singlet exciton, spin-allowed singlet fission may produce two triplet excitons that can be used to generate two electron-hole pairs, leading to a predicted 1/450% enhancement in maximum solar cell performance. The singlet fission mechanism is still not well understood. Here we report on the use of time-resolved optical and electron paramagnetic resonance spectroscopy to probe singlet fission in a pentacene dimer linked by a non-conjugated spacer. We observe the key intermediates in the singlet fission process, including the formation and decay of a quintet state that precedes formation of the pentacene triplet excitons. Using these combined data, we develop a single kinetic model that describes the data over seven temporal orders of magnitude both at room and cryogenic temperatures.

Original language	English
Article number	15171
Journal	Nature communications
Volume	8
DOIs	https://doi.org/10.1038/ncomms15171
Publication status	Published - May 18 2017

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
Physics and Astronomy(all)

Access to Document

10.1038/ncomms15171

Fingerprint Dive into the research topics of 'Unified model for singlet fission within a non-conjugated covalent pentacene dimer'. Together they form a unique fingerprint.

Cite this

Basel, B. S., Zirzlmeier, J., Hetzer, C., Phelan, B. T., Krzyaniak, M. D., Reddy, S. R., Coto, P. B., Horwitz, N. E., Young, R. M., White, F. J., Hampel, F., Clark, T., Thoss, M., Tykwinski, R. R., Wasielewski, M. R., & Guldi, D. M. (2017). Unified model for singlet fission within a non-conjugated covalent pentacene dimer. Nature communications, 8, [15171]. https://doi.org/10.1038/ncomms15171

Unified model for singlet fission within a non-conjugated covalent pentacene dimer. / Basel, Bettina S.; Zirzlmeier, Johannes; Hetzer, Constantin; Phelan, Brian T.; Krzyaniak, Matthew D.; Reddy, S. Rajagopala; Coto, Pedro B.; Horwitz, Noah E.; Young, Ryan M.; White, Fraser J.; Hampel, Frank; Clark, Timothy; Thoss, Michael; Tykwinski, Rik R.; Wasielewski, Michael R.; Guldi, Dirk M.

In: Nature communications, Vol. 8, 15171, 18.05.2017.

Research output: Contribution to journal › Article

Basel, Bettina S. ; Zirzlmeier, Johannes ; Hetzer, Constantin ; Phelan, Brian T. ; Krzyaniak, Matthew D. ; Reddy, S. Rajagopala ; Coto, Pedro B. ; Horwitz, Noah E. ; Young, Ryan M. ; White, Fraser J. ; Hampel, Frank ; Clark, Timothy ; Thoss, Michael ; Tykwinski, Rik R. ; Wasielewski, Michael R. ; Guldi, Dirk M. / Unified model for singlet fission within a non-conjugated covalent pentacene dimer. In: Nature communications. 2017 ; Vol. 8.

@article{0e2981b4d4ad496fa9d9bb49a305d296,

title = "Unified model for singlet fission within a non-conjugated covalent pentacene dimer",

abstract = "When molecular dimers, crystalline films or molecular aggregates absorb a photon to produce a singlet exciton, spin-allowed singlet fission may produce two triplet excitons that can be used to generate two electron-hole pairs, leading to a predicted 1/450% enhancement in maximum solar cell performance. The singlet fission mechanism is still not well understood. Here we report on the use of time-resolved optical and electron paramagnetic resonance spectroscopy to probe singlet fission in a pentacene dimer linked by a non-conjugated spacer. We observe the key intermediates in the singlet fission process, including the formation and decay of a quintet state that precedes formation of the pentacene triplet excitons. Using these combined data, we develop a single kinetic model that describes the data over seven temporal orders of magnitude both at room and cryogenic temperatures.",

author = "Basel, {Bettina S.} and Johannes Zirzlmeier and Constantin Hetzer and Phelan, {Brian T.} and Krzyaniak, {Matthew D.} and Reddy, {S. Rajagopala} and Coto, {Pedro B.} and Horwitz, {Noah E.} and Young, {Ryan M.} and White, {Fraser J.} and Frank Hampel and Timothy Clark and Michael Thoss and Tykwinski, {Rik R.} and Wasielewski, {Michael R.} and Guldi, {Dirk M.}",

year = "2017",

month = may,

day = "18",

doi = "10.1038/ncomms15171",

language = "English",

volume = "8",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Unified model for singlet fission within a non-conjugated covalent pentacene dimer

AU - Basel, Bettina S.

AU - Zirzlmeier, Johannes

AU - Hetzer, Constantin

AU - Phelan, Brian T.

AU - Krzyaniak, Matthew D.

AU - Reddy, S. Rajagopala

AU - Coto, Pedro B.

AU - Horwitz, Noah E.

AU - Young, Ryan M.

AU - White, Fraser J.

AU - Hampel, Frank

AU - Clark, Timothy

AU - Thoss, Michael

AU - Tykwinski, Rik R.

AU - Wasielewski, Michael R.

AU - Guldi, Dirk M.

PY - 2017/5/18

Y1 - 2017/5/18

N2 - When molecular dimers, crystalline films or molecular aggregates absorb a photon to produce a singlet exciton, spin-allowed singlet fission may produce two triplet excitons that can be used to generate two electron-hole pairs, leading to a predicted 1/450% enhancement in maximum solar cell performance. The singlet fission mechanism is still not well understood. Here we report on the use of time-resolved optical and electron paramagnetic resonance spectroscopy to probe singlet fission in a pentacene dimer linked by a non-conjugated spacer. We observe the key intermediates in the singlet fission process, including the formation and decay of a quintet state that precedes formation of the pentacene triplet excitons. Using these combined data, we develop a single kinetic model that describes the data over seven temporal orders of magnitude both at room and cryogenic temperatures.

AB - When molecular dimers, crystalline films or molecular aggregates absorb a photon to produce a singlet exciton, spin-allowed singlet fission may produce two triplet excitons that can be used to generate two electron-hole pairs, leading to a predicted 1/450% enhancement in maximum solar cell performance. The singlet fission mechanism is still not well understood. Here we report on the use of time-resolved optical and electron paramagnetic resonance spectroscopy to probe singlet fission in a pentacene dimer linked by a non-conjugated spacer. We observe the key intermediates in the singlet fission process, including the formation and decay of a quintet state that precedes formation of the pentacene triplet excitons. Using these combined data, we develop a single kinetic model that describes the data over seven temporal orders of magnitude both at room and cryogenic temperatures.

UR - http://www.scopus.com/inward/record.url?scp=85019612851&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019612851&partnerID=8YFLogxK

U2 - 10.1038/ncomms15171

DO - 10.1038/ncomms15171

M3 - Article

C2 - 28516916

AN - SCOPUS:85019612851

VL - 8

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 15171

ER -