The pressure dependence of the optical absorption spectrum in (NMe4)2TCNQ3 and Cs2TCNQ3 has been measured at room temperature in the spectral range from mid-infrared to visible. At the ambient pressure the optical energy gap is observed at around 0.5 and 0.3 eV in (NMe4)2TCNQ3 and Cs2TCNQ3, respectively. The energy gap in (NMe4)2TCNQ3 decreases by 0.05 eV with increasing pressure up to 2 GPa, f...

To identify the genesis of differing magnetic behaviors for ferro- (FO) and metamagnetic (MM) polymorphs [FeCp* 2 ][TCNQ] low temperature structures each polymorph were determined from high-resolution synchrotron powder diffraction data.

Sublimation of alkali halides (NaCl and LiCl) onto a pre-assembled hydrogen-bonded layer of TCNQ on Au(111) resulted in the formation of 2D ionic layers via a direct charge-transfer reaction without involvement of the substrate. The presented approach allows for the fabrication of different ionic layers, decoupled from the substrate and offering new, potentially interesting properties.

TCNQ is a fascinating molecule with potential for optical, electronic and magnetic materials. Our work studies the low energy lattice modes of parent compound to further understand vibrational properties including their temperature dependence.

EPR reveals a range of different environments for spins introduced into P3HT films by molecular doping with F4TCNQ and BCF, characterised interaction strengths dopant radical anions extents charge delocalisation.

The chemical modification of an immobilized single crystal in a fluid cell is reported, whereby a material with switching functions is generated in situ by generating a chemical reagent in the flow. Crystals of the insulating organic crystal of TCNQ (tetracyanoquinodimethane) were grown in a microfluidic channel and were trapped using a pneumatic valve, a nascent technique for materials manipul...

A series of tetrathiafulvalenes functionalized with one or two trifluoromethyl electron-withdrawing groups (EWG) is obtained by phosphite coupling involving CF3-substituted 1,3-dithiole-2-one derivatives. The relative effects of the EWG such as CF3, CO2Me and CN on the TTF core were investigated from a combination of structural, electrochemical, spectrochemical and theoretical investigations. E...

This paper reviews charge ordering in the organic conductors, β′′-(BEDT-TTF) (TCNQ), θ-(BEDT-TTF)2X, and α-(BEDT-TTF)2X. Here, BEDT-TTF and TCNQ represent bis(ethylenedithio)tetrathiafulvalene and 7,7,8,8-tetracyanoquinodimethane, respectively. These compounds, all of which have a quarter-filled band, were evaluated using infrared and Raman spectroscopy in addition to optical conductivity measu...

Oriented film and pattern of TCNQ@Cu 3 (BTC) 2 (HKUST-1) fabricated via epitaxial growth exhibit anisotropic electrical properties toward MOF-based (flexible) thin-film smart device applications, such as transistors thermoelectric thin films.