Ionic liquids composed of a thiocyanate complex of Ce(III) exhibit bright cyan photoluminescence with a quantum yield close to 40% in addition to paramagnetism. The morphology of a droplet of ionic liquid changes in response to solvent vapor as a stimulus. The emission lifetime and thermal property are characterized. The Weiss temperature is evaluated from the magnetic property measurements, which indicates that antiferromagnetic exchange interaction exists between Ce(III) ions. Insight into the characteristics of the electronic transitions in the Ce(III) complex is obtained using quantum chemical calculations. Thiocyanate complexes of Ce(III) are demonstrated as promising building blocks to produce solvent-free luminescent functional materials.

中文翻译：

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由Ce（III）的硫氰酸盐配合物组成的具有磁性的无溶剂明亮型发光液体。

由Ce（III）的硫氰酸酯络合物组成的离子液体除顺磁性外，还显示出明亮的蓝绿色光致发光，量子产率接近40％。离子液体液滴的形态响应于溶剂蒸气作为刺激而改变。表征了发光寿命和热性能。从磁性能测量值评估了魏斯温度，这表明Ce（III）离子之间存在反铁磁交换相互作用。使用量子化学计算可洞察Ce（III）络合物中电子跃迁的特征。Ce（III）的硫氰酸盐配合物被证明是生产无溶剂发光功能材料的有前途的基石。