The synthesis, characterization, electropolymerization, electrical and sensing properties of LB films of mono-and dihexadecyl-bis(pyrrolyl)fluorene derivatives are reported. Different responses to different gases at various concentrations obtained for mono-and disubstituted derivatives of bis(pyrrolyl)fluorene make these materials a very good candidates for elements of gas sensing devices of the different type of an "artificial nose" or a neuronic network.

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