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Updated: Feb 22, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
Synthesis and characterization of bright green terbium coordination complex derived from
Mengjiao Ma1, Congcong Li1, Dengkun Shu1
1Tianjin Key Laboratory of Advanced Fibers and Energy Storage, Tianjin Polytechnic University, 399 Bin Shui West Road, 300387 Tianjin, PR China.
Abstract:
A photoluminescent terbium (Tb) complex involving a novel benzoic-acid compound with a unique coordinated structure, namely 1,4-bis(carbonylmethyl)terephthalate (BCMT), has been designed and synthesized. The new coordinate structure and energy-transfer mechanism between the ligand and Tb(III) ions were investigated in detail. The results demonstrated that the BCMT-Tb(III) complex shows strong fluorescence intensity (4×106a.u.) and long fluorescence lifetime (1.302ms), owing to the favorable degree of energy matching between the triplet excited level of the ligand and the resonant level of Tb(III) ions. Based on the analysis of three-dimensional luminescence spectra, the as-prepared Tb(III) complex can be effectively excited in the range of 250-310nm, and it shows high color purity, with a bright green appearance.
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