The 5,5'-(4,4'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(4,1-phenylene))bis(2-hexylthieno[3,2-b]thiophene) FCBT (6) was synthesized by connecting the fluorenyl, thienothiophenyl and phenyl units. The compound was characterized by FT-IR, H1NMR, C13NMR and mass spectroscopy. The compound has shown good solubility and thermal stability over 417 degrees C. The compound has shown hole mobility of 4.76 x 10(-6) cm2Ns. The on-off ratio and threshold voltage were 7.5 x 10(2) and -8.26 V respectively.
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