STUDY ON A MIXED CONDUCTING LANGMUIR-BLODGETT-FILM BASED ON A NEW ASYMMETRICAL TETRATHIAFULVALENE

Dibenzylthio-dihexadecylthio-tetrathiafulvalene is a new material for constructing a conducting Langmuir-Blodgett (LB) film. A 1:1 molar mix ture with arachidic acid forms a conducting LB film of Y-type. The con ductivities of this mixed LB film were calculated from experimental re sults before and after iodine oxidation. The highest conductivity was obtained after iodine doping and reached 0.23 S cm(-1). UV spectral an alysis suggests that the system interacts with iodine and gives rise t o a new conducting phase after iodine doping of the LB film. Results f rom X-ray diffraction demonstrate that the as-deposited film has an or dered lamellar structure with a thickness per layer of 2.63 nm. (C) 19 97 Elsevier Science S.A.