Pentacene Dimers as a Critical Tool for the Investigation of Intramolecular Singlet Fission

Hetzer C, Guldi DM, Tykwinski RR (2018)

Publication Type: Journal article, Review article

Publication year: 2018

Journal

Chemistry - A European Journal Wiley

Book Volume: 24

Pages Range: 8245-8257

Journal Issue: 33

DOI: 10.1002/chem.201705355

Abstract

Singlet fission (SF) involves the spontaneous splitting of a photoexcited singlet state into a pair of triplets, and it holds great promise toward the realization of more efficient solar cells. Although the process of SF has been known since the 1960s, debate regarding the underlying mechanism continues to this day, especially for molecular materials. A number of different chromophores have been synthesized and studied in order to better understand the process of SF. These previous reports have established that pentacene and its derivatives are especially well-suited for the study of SF, since the energetic requirement E(S1)≥2E(T1) is fulfilled rendering the process exothermic and unidirectional. Dimeric pentacene derivatives, in which individual pentacene chromophores are tethered by a “spacer”, have emerged as the system of choice toward exploring the mechanism of intramolecular singlet fission (iSF). The dimeric structure, and in particular the spacer, allows for controlling and tuning the distance, geometric relationship, and electronic coupling between the two pentacene moieties. This Minireview describes recent advances using pentacene dimers for the investigation of iSF.

Authors with CRIS profile

Constantin Hetzer Lehrstuhl für Anorganische und Allgemeine Chemie Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

University of Alberta CA Canada (CA)

How to cite

APA:

Hetzer, C., Guldi, D.M., & Tykwinski, R.R. (2018). Pentacene Dimers as a Critical Tool for the Investigation of Intramolecular Singlet Fission. Chemistry - A European Journal, 24(33), 8245-8257. https://doi.org/10.1002/chem.201705355

MLA:

Hetzer, Constantin, Dirk Michael Guldi, and Rik R. Tykwinski. "Pentacene Dimers as a Critical Tool for the Investigation of Intramolecular Singlet Fission." Chemistry - A European Journal 24.33 (2018): 8245-8257.

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