Abstract
Abstract The neutral homoleptic europium(III) complex Eu(Tp) 3 (Tp = hydrotris(pyrazol-1-yl)borate) showed luminescence associated to f–f transitions if irradiated with near-ultraviolet radiation having wavelength lower than 380 nm. In this species the most intense emission corresponds to the 5 D 0 → 7 F 4 transition, falling between 690 and 700 nm. The complex is stable towards oxygen, moisture and near-UV light. The energy levels of the coordinated ligands involved in the photoluminescence process were computed by applying computational methods and by carrying out luminescence measurements on the analogous Gd(III) complex.
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