We report the synthesis, electrochemistry, photophysics and electroluminescence of a highly luminescent pyrazolate-bridged platinum(ii) complex. Light-emitting electrochemical cells (LEECs) of this dimer complex were among the brightest and most efficient LEECs from dinuclear compounds to date.

Novel polymers bearing pendant picolinic acid functionalities have been synthesized by ring-opening metathesis polymerization (ROMP) for applications in separations-based purification protocols. These polymers and their corresponding monomer were shown to be selective for Cu over a variety of other divalent metal cations as inferred from pH dependent studies carried out under both liquid-liquid and solid-liquid extraction conditions. The polymer system of this study also showed high selectivity for Cu over Ni in mock protocols that could be relevant to the purification of Cu radioisotopes. Separation factors as high as 290 were achieved for extractions from solutions containing a 100-fold excess of Ni relative to Cu.

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