Photocontrollable luminescent materials with highly efficient emission properties offer promising application prospects in the field of intelligent switches, information security, etc. Herein, two stimulus-responsive CPs (CPs 1-2) have been successfully synthesized based on the photoactive TPT ligand (2,4,6-tris-4-pyridyl-1,3,5-triazine) via the solvothermal method. Remarkably, CPs 1-2 exhibit distinct photochromism coupled with photocontrollable luminescence behaviors. Furthermore, by employing an in situ doping strategy, lanthanide ions were immobilized within the pores of CP 2 to generate Eu/Tb@CP 2 composites, which display significantly enhanced fluorescence (QY increased from 0.49% to 16.5%) without compromising photochromic properties. Moreover, leveraging their dynamic, efficient, and multicolor luminescence, these compounds enable the realization of multimode smart displays. This work offers valuable insights for designing novel stimulus-responsive materials with efficient and color-tunable luminescence via in situ doping strategies, thereby advancing the development of photochromic materials toward practical applications in multilevel information display and advanced data encryption.
Yuan et al. (Fri,) studied this question.
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