Issue 43, 2018

Singlet fission in self-assembled PDI nanocrystals

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

Supplementary files

Article information

Article type
Paper
Submitted
23 מאי 2018
Accepted
21 אוג 2018
First published
31 אוג 2018

Nanoscale, 2018,10, 20147-20154

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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