Cyclodimers and Cyclotrimers of 2,3?-Bisalkynylated Anthracenes,Phenazines and Diazatetracenes |
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| Authors: | Steffen Maier Nikolai Hippchen Dr Frank Rominger Dr Jan Freudenberg Prof Uwe H F Bunz |
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| Institution: | Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany |
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| Abstract: | The synthesis of novel (N?)acene-based cyclooligomers is reported. Glaser-Hay coupling of the bisethynylated monomers results in cyclodimers and cyclotrimers that are separable by column and gel-permeation chromatographies. For the diazatetracene, the use of sec-butyl-silylethynyl groups is necessary to achieve solubility. Diazatetracene-based cyclodimers and cyclotrimers were used as semiconductors in thin-film transistors. Although their optoelectronic properties are quite similar, their electron mobilities in proof-of-concept thin-film transistors differ by an order of magnitude. |
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| Keywords: | acenes alkynes Glaser–Hay coupling graphdyine organic field-effect transistors |
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