The mixed ligand complexes of europium(III) with poly(chloromethyl styrene)-bound 1,4,8,11-tetraazacyclotetradecane (PTACT) and thenoyl trifluoroacetone (TTA) have been synthesized and characterized by Fourier transform infrared and elemental analysis, Inductively Coupled Plasma-Atomic Emission Spectrometry, and X-ray photoelectron spectroscopy. The fluorescence properties of PTACT-Eu-TTA were studied, and it is found that the polymer-mixed ligand complexes emit strong fluorescence at room temperature.