Carbonyl- and cyano-substituted oligothiophenes

In contrast, 49 exhibits ambipoiar activity, simiiar to 47, with eiectron and hoie mobiiities of 0.002 and 2 X 10 cm s respectiveiy. 

These measurements demonstrated that it is possible to pattern the area undergoing in situ conversion of charge carrier type via a non-destructive contact stamp method. 

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