Synthesis and Properties of Novel Unsymmetrical Donor Molecules Containing p-Acetoxy- or p-Hydroxyphenyl Units

• Main Authors: Abdelkrim Gouasmia, Slimane Fradj, Lakhemici Kaboub
• Format: Article
• Language: English
• Published: MDPI AG 2006-10-01
• Series: Molecules
• Subjects: Tetratiafulvalene; voltammetry; organic materials; conductivity; degree of charge transfer.
• Online Access: http://www.mdpi.com/1420-3049/11/10/776/

We report the synthesis and properties of eight new tetrathiafulvalene (TTF) derivatives containing two different functionalities, prepared with the aim of obtaining stable organic materials. The four acetoxyphenyl- and four hydroxyphenyl TTFs were synthesized via Wittig-type condensations. The electrochemical properties of these redox-active molecules were studied by cyclic voltammetry. Charge transfer complexes with tetracyanoquinodimethane (TCNQ) were prepared by chemical redox reactions. The complexes have been proven to give conducting materials. The UV-VIS and IR spectra of the TCNQ salts were recorded and used to characterize and estimate the degree of charge transfer of these complexes.