Issue 43, 2018
From the journal:

Nanoscale

Singlet fission in self-assembled PDI nanocrystals†

Christoph Schierl,a   Angelica Niazov-Elkan,b   Linda J. W. Shimon,b   Yishay Feldman,b   Boris Rybtchinski ORCID logo b  and  Dirk M. Guldi ORCID logo *a  

* Corresponding authors

a Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, University of Erlangen-Nuremberg, Egerlandstrasse 3, 91058 Erlangen, Germany
E-mail: dirk.guldi@fau.de

b Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 7610001, Israel

Abstract

Upon photoexcitation, self-assembled PDI nanocrystals (S1S0) in the form of rods of 70 nm width and 1 μm length are subject to a symmetry breaking charge separation (SBCS) as the first step in the singlet fission (SF) sequence. Hereby, the correlated pair of triplet excited states 1(T1T1) is formed with a quantum yield of 122%. Decoherence and triplet diffusion within the nanocrystals affords a long-lived, uncorrelated pair of triplet excited states (T1 + T1) with a quantum yield of 24%.

Graphical abstract: Singlet fission in self-assembled PDI nanocrystals

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Article information

DOI
https://doi.org/10.1039/C8NR04155E
Article type
Paper
Submitted
23 may 2018
Accepted
21 avq 2018
First published
31 avq 2018

Nanoscale, 2018,10, 20147-20154

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Singlet fission in self-assembled PDI nanocrystals

C. Schierl, A. Niazov-Elkan, L. J. W. Shimon, Y. Feldman, B. Rybtchinski and D. M. Guldi, Nanoscale, 2018, 10, 20147 DOI: 10.1039/C8NR04155E

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