Synthesis and properties of a series of new asymmetrical tetrathiafulvalene derivatives

A series of new asymmetrically substituted tetrathiafulvalene (TTF) derivatives, a charge transfer (CT) complex, and several related symmetrical TTF derivatives were synthesized. The compounds were characterized by elemental analysis, 1H NMR spectra, IR spectra, and electron ionization (EI) or negative-ion fast atom bombardment (FAB) mass spectral analysis. UV-Vis spectra of the new asymmetrical TTF derivatives and the CT complex in solution were investigated. In addition, mixed conducting Langmuir-Blodgett (LB) films were constructed from the asymmetrical TTF derivatives by admixing with an equimolar arachidic acid.