A catalytic system consisting of copper complex and hydrogen peroxide in Emim ionic liquid medium was effective in the epoxidation of olefins and terpenes. The catalyst and the ionic liquid mixture was recycled and reused consistently.

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A new coordination compound, chloro(1,10-phenanthroline-N, N′)(triphenylphosphine)copper(I) dichloromethane, incorporated in poly(methyl methacrylate) exhibits superior nonlinear optical properties in the near-infrared spectral region. Its nonlinear response time and third-order nonlinear optical susceptibility at 800 nm are ≤ 90 fs and 1.8 × 10 − 10 esu, respectively. Considerable nonlinear absorption is observed with this sample, near 800 and 1250 nm. The contribution of the excited states to the total nonlinear absorption process is discussed. The results reveal the potential of this newly designed compound for multi-photon absorption-based photonic applications.

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