Thiophene-Derivatized Pybox and Its Highly Luminescent Lanthanide Ion Complexes

A new complex of 4-thiophen-3-yl-pyridine-2,6-bis(oxazoline) with Eu(III) triflate has been isolated. This complex and its Tb(III) analogue are luminescent in the solid state. The complexes dissolve with partial retention of the solid-state structure in acetonitrile to yield highly luminescent solutions with quantum yields of 76.2 and 58.6% for red and green emission, respectively.

本研究成功分离得到一种由4-(3-噻吩基)吡啶-2,6-双(恶唑啉)与三氟甲磺酸铕(III)（Eu(III) triflate）形成的新型配合物。该配合物及其铽(III)类似物在固态下均具有发光性能。上述配合物可溶于乙腈，且溶解过程中部分保留其固态结构，所得溶液展现出优异的发光特性，其红光发射与绿光发射的量子产率分别为76.2%与58.6%。