Tetrathiofulvalene tetracyanoquinodimethane TTF-TCNQ

NEUTRON AND X-RAY DIFFUSE SCATTERING STUDY OF TETRATHIOFULVALENE TETRACYANOQUINODIMETHANE (TTF - TCNQ)... 

Interest in electrically conducting polymers began in the mid-1960s with the su estion of Little [17] in his theoretical studies that some organic materials could become superconductors. The first example that has been extensively studied is tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ) and its derivatives. The first covalent polymer exhibiting the electronic properties of a metal was polymeric sulfur nitride, (SN), which attracted much attention in the mid- to late 1970s. 

Batra, I.P., Bennett, B.I., Herman, F. Simple molecular model for crystalline tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ). Phys. Rev. B 11, 4927-4934 (1975)... 

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