Electroabsorption of cetylthiotetrathiafulvalene / fluoro-containing 7,7,8,8-tetracyanoquinodimethane systems in Langmuir-Blodgett films

External electric field effects on the electronic structures of charge transfer complexes were examined in Langmuir-Blodgett films. Significant electroabsorption signals arising primarily from the first Stark effect were obtained for the films of amphiphilic cetylthiotetrathiafulvalene (TTF 1) / 7,7,8,8-tetracyano-2,3,5,6-tetrafluoroquinodimethane (F4TCNQ) 1 : 1 complex. The signals of the films consisting of TTF 1 / FnTCNQ (n = 0, 1, 2) systems were smaller than that of TTF 1 / F4TCNQ complex under ambient conditions.