A major support for the advancement in the design of functional molecular objects is our improving ability to control their macromolecular structure in great detail often by using proper deposition methods (Langmuir - Blodgett). In the last two decades there has been an increasing interest in electroactive molecules arranged in thin films, due to their capability for the development of electronic and sensoric devices².

Continuing our considerable interest in precursors of conducting and sensing materials chemistry³ stimulated us to present the results of research into the properties of LB films containing TCNQ. TCNQ as well as its derivatives focus on extesively use as electron acceptor in a large number of organic conducting system. The present work pointed on results of measurement of the effect of toxic gases on CT complex LB film gas sensor. The monitored changes of the surface dark conductivity of sensor made of fluorene derivatives with TCNQ due to adsorption of toxic gases.

1. Schappacher M., Deffieux A., Macromolecules, 2005, 38, 7209-7213

2. Hirano Ch., Imae T., Fujima S., Yanagimoto Y., Takaguchi Y., Langmuir, 2005, 21, 272 279

3. Cabaj J., Sołoducho J., Nowakowska A., Chyla A., Electroanalysis Journal, 2006, 18 (8), 801-806

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