6533b826fe1ef96bd12845a3
RESEARCH PRODUCT
New conducting radical salts based upon Keggin-type polyoxometalates and perylene
Eugenio CoronadoEugenia Martínez-ferreroElsa B. LopesRosa LlusarManuel AlmeidaSilvia C. CapelliCarlos J. Gómez-garcíaCarlos Giménez-saizJosé Ramón Galán-mascaróssubject
chemistry.chemical_classificationPhase transitionElectron mobilitySalt (chemistry)General ChemistryThermal conductionchemistry.chemical_compoundThermal conductivitychemistryElectrical resistivity and conductivitySeebeck coefficientMaterials ChemistryPhysical chemistryPerylenedescription
Three new radical salts, Per6[PMo12O40]·CH2Cl2 (1), Per6[PMo12O40]·CH3CN (2), and Per9(NBu4)4[SiW12O40]2 (3) (Per = perylene), have been synthesised and their electrical and magnetic properties characterised. These three salts are diamagnetic and they behave as semiconductors with room temperature conductivities of 69, 3.6 and 0.85 S cm−1. While salt 2 presents hole-type conduction and 3 exhibits electron-dominated electrical transport properties, salt 1 shows at 150 K an abrupt change in the thermal dependence of the electrical conductivity and the Seebeck coefficient suggesting a phase transition.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-01-01 | J. Mater. Chem. |