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Layered Electron Acceptors by Dimerization of Acenes End- Capped with 1,2,5-Thiadiazoles
Debin Xia1, Xin Guo1,2, Long Chen1,3
1Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
Abstract:
Layered electron acceptors D1-4 equipped with terminal 1,2,5-thiadiazole groups have been constructed using a one-pot protocol of acene dimerization. Their molecular structures are determined using single-crystal X-ray diffraction analysis. Photophysical and electrochemical properties of these molecules present a marked dependence on conjugation length and molecular geometry. An aggregation-induced emission peak and an intramolecular excimer emission (IEE) band were observed for D2 and D4, respectively. This work paves the way for the efficient synthesis of layered heteroacenes.
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