Journal article

Self-Assembling Thiophene Dendrimers with a Hexa-peri-hexabenzocoronene Core-Synthesis, Characterization and Performance in Bulk Heterojunction Solar Cells

Wallace WH Wong, Chang-Qi Ma, Wojciech Pisula, Chao Yan, Xinliang Feng, David J Jones, Klaus Muellen, Rene AJ Janssen, Peter Baeuerle, Andrew B Holmes



The solid state organization of molecules is an important factor in determining the performance of organic electronic devices. In bulk heterojunction (BHJ) solar cells, the arrangement of electron donor and acceptor materials into distinct crystalline phases of ideal size and distribution can lead to better power conversion efficiencies. The use of fluorenyl hexa-peri-hexabenzocoronene (FHBC) 2 in this study has highlighted the importance of molecular organization to device performance. FHBC compounds 6, 8, and 10, functionalized with a series of thiophene dendrons, were synthesized using Suzuki-Miyaura coupling in high yields. In UV-vis and 1H NMR spectroscopic studies, all FHBC derivatives..

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Awarded by Australian Research Council

Awarded by Fonds der Chemischen Industrie, Deutsche Forschungsgemeinschaft

Awarded by NAIMO EU

Funding Acknowledgements

We thank the Australian Research Council (FF0348471, DP0451189, DP0877325) and the Commonwealth Scientific and Industrial Research Organization (CSIRO), the Victorian Government Department of Primary Industries (VICOSC), the Victorian Endowment for Science, Knowledge and Innovation (VESKI), University of Melbourne, DAAD/Go8 exchange scheme, the Fonds der Chemischen Industrie, Deutsche Forschungsgemeinschaft (SFB 569) and the NAIMO EU integrated project (NMP4-CT-2004-500355) for generous financial support. We also thank Dr, Scott Watkins (CSIRO) for the use of the AC2 spectroscope for acquiring the photoelectron spectrum of the FHBC compounds in air.