Synthesis, Photophysical, and Device Properties of Novel Dendrimers Based on a Fluorene-Hexabenzocoronene (FHBC) Core
Wallace WH Wong, David J Jones, Chao Yan, Scott E Watkins, Simon King, Saif A Haque, Xiaoming Wen, Kenneth P Ghiggino, Andrew B Holmes
ORGANIC LETTERS | AMER CHEMICAL SOC | Published : 2009
The synthesis of easily functionalized and highly soluble fluorene-containing hexabenzocoronenes (FHBC) has been achieved in high yield at a gram scale. Conjugated triarylamine oligomers were coupled to the FHBC cores via Buchwald-Hartwig coupling, and the photophysical properties of resulting dendritic materials were examined by ultrafast laser spectroscopic techniques. Efficient quenching of the triarylamine oligomer fluorescence was observed paving the way for the inclusion of these materials in bulk heterojunction solar cells. In preliminary studies, solar cell devices with external quantum efficiencies above 5% have been fabricated.
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Awarded by Australian Research Council (ARC)
Awarded by Australian Government Department of Innovation, Industry, Science and Research (ICOSC)
We thank the Australian Research Council (ARC, DP0451189, DP0877325), the Victorian Government Department of Primary Industries (ETIS), the Australian Government Department of Innovation, Industry, Science and Research (ICOSC, CG10059), the Commonwealth Scientific and Industrial Research Organisation (CSIRO), the Victorian Endowment for Science; Knowledge and Innovation (VESKI), University of Melbourne and DAAD/Go8 exchange scheme for generous financial support. S.A.H. acknowledges EPSRC, BP-Solar, ESF-SONS2 program, and the Royal Society for financial support.