Synthesis, photophysical, and device properties of novel dendrimers based on a fluorene-hexabenzocoronene (FHBC) core.
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.
Wong
Wallace W H
WW
School of Chemistry, Bio21 Institute, University of Melbourne, Vic. 3010, Australia. wwhwong@unimelb.edu.au
Jones
David J
DJ
Yan
Chao
C
Watkins
Scott E
SE
King
Simon
S
Haque
Saif A
SA
Wen
Xiaoming
X
Ghiggino
Kenneth P
KP
Holmes
Andrew B
AB
D002384:Catalysis; D050091:Dendrimers / Q000138:chemical synthesis* / Q000737:chemistry; D005449:Fluorenes / Q000737:chemistry*; D005453:Fluorescence; D013058:Mass Spectrometry; D015394:Molecular Structure; D010777:Photochemistry / Q000379:methods
D050091:Dendrimers; D005449:Fluorenes