Synthesis and luminescent properties of a novel green-emitting Tb(III) complex and the excellent thermal stability for application

A green-emitting Tb(III) complex based on siloxane-modified pressure sensitive adhesives (SPSA-Tb(III)) was successfully synthesized by emulsion polymerization . Siloxane-modified pressure sensitive adhesives (SPSA) were used as host materials. The structural coordination, photoluminescence excitation (PLE) and luminescence (PL) spectra, and thermal characterization of this luminescent polymer were investigated. The result from the FT-IR spectra reveals that SPSA have successfully coordinated with the Tb(III) ions. The luminescent analysis indicates that SPSA-Tb(III) displays Tb(III) typical emission peaks at 489, 545, 583, and 622   nm under the excitation of 369   nm. When monitored at 545   nm, strong and sharp excitation bands appear from 300 to 500   nm. And SPSA-Tb(III) has short lifetime (0.25   ms). Meanwhile, SPSA-Tb(III) exhibits high thermal stability (T d   =   402   °C) owing to the high bond dissociation energy of Si O bonds. All the results suggest that it is expected to be used as a superior green-emitting material under high temperature.