New Langmuir–Blodgett Films Based on Substituted 1,2-Dithiolium-TCNQ Radical Anion Salts

Abstract
Based upon the synthesis of 3,4,5-tris(alkylthio)-1,2-dithiolium cation salts, we have realized new Langmuir–Blodgett films. They present either a centrosymmetrical or noncentrosymmetrical bilayer organization depending on the involved molecular association with iodine, tetracyanoquinodimethane or some other radical anion.