Investigation of the influence of chirality on the transport properties requires the preparation of structurally different families of enantiopure conductors. Controlling the substituent bulkiness in the R-EDT-TTF donor leads, with the PF6 anion, to two different series of 2:1 enantiopure conducting salts with either metallic or activated conductivity.
Chiral EDT-TTF precursors with one stereogenic centre: substituent size modulation of the conducting properties in the (R-EDT-TTF)2PF6 (R = Me or Et) series
Nabil Mroweh, Pascale Auban-Senzier, Nicolas Vanthuyne, Enric Canadell, Narcís Avarvari
J. Mater. Chem C 7, 12664−12673, 2019
Figure: Depending on the R substituent in the (R-EDT-TTF) donor (center) two different conducting salts with 2:1 stoichiometry, [(R)-1]2PF6 (left) and [(R)-2]2PF6 (right) can be prepared. The different donor layers lead to band formation with considerably different band width resulting with metals ([(R)-1]2PF6, left) or localized semiconductors ([(R)-2]2PF6, right).