Abstract
Molecular Ce(III) complexes are newly developed luminophores that have potential applications in a number of fields. However, there have been very limited studies regarding the application of solvoluminescent Ce(III) complexes. In this paper, we report the luminescence of CeI 3 in different organic solvents. Violet or blue emissions were observed for CeI 3 dissolved in THF, CH 3 CN and Et 2 O under ultraviolet irradiation. The luminescent properties are correlated with the structures of solvated complexes as exemplified in the CeI 3 (THF) 4 case. The solvoluminescence is strongly affected by the presence of water which converts solvated Ce(III) into cerium hydrates. The concentration of water lowered to 0.1vol% was tested in THF, CH 3 CN and Et 2 O, indicating the potential application of commercial CeI 3 as a convenient luminescent sensor for the detection of trace water in organic solvents.
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