Thin films and nanowires of molecule-based conductors and magnets

Abstract Nanowires of tetrathiafulvalene (TTF)[Ni(dmit) 2 ] 2 (dmit 2− : 2-thioxo-1,3-dithiole-4,5-dithiolato) are obtained by successively dipping SSCC in acetonitrile solutions of (Bu 4 N)[Ni(dmit) 2 ] and (TTF) 3 (BF 4 ) 2 , observed by S.E.M. and AFM, and characterized by Raman micro-probe. Thin films of (TTF)[Ni(dmit) 2 ] 2 are obtained by the same process but using a new original silicon conversion coating (SiCC). The deposit is observed by S.E.M., and characterized by Raman micro-probe and transport measurements. TTF·tetracyanoquino-dimethane (TCNQ) individual nanowires and (TTF)[Ni(dmit) 2 ] 2 nano-needles scattered on the surface of the substrate or aggregated in wads, are obtained by the dipping process on oxide-free micro-rough silicon (O-f.Mr.Si). Adherent thin films of the V(TCNE) 2 (TCNE: tetracyanoethylene) magnet are deposited on (O-f.Mr.Si) substrates by chemical vapor deposition from bis(benzene)vanadium and TCNE as precursors.