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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.