In this letter we discuss the preparation and characterization of LB films of 4-hexadecanoyltetrathiafulvalene (HDTTF) (compound). TTF derivatives bearing one long hydrophobic chain have not been reported previously. Derivatives with four long thioalkyl chains attached to the TTF skeleton are known 9 , but LB films of these materials have not been described. Multilayers of compouns (1) have been assembled on hydrophobic glass substrates, the films become conducting after iodine doping