Multimodal Luminescence in Antimony(III)-Doped Hybrid Manganese(II)-Based Compounds for Dynamic Anticounterfeiting Encryption and Optical Thermometry

作者：Xiangyan Yun, Yujie Xie, Yukang Lu, Hanlin Hu, Yumeng Shi, Henan Li · 发表于：Chemistry of Materials · 年份：2025 · DOI：10.1021/acs.chemmater.5c01141 · 被引用次数：2 · 研究领域：Luminescence and Fluorescent Materials、Perovskite Materials and Applications、Luminescence Properties of Advanced Materials

The synergistic interaction between Mn 2+ and Sb 3+ ions in organic–inorganic hybrid single crystals has unlocked exciting optical applications for multiple band emission centers. Here, (TPMP) 2 MnBr 4: Sb 3+ single crystals were synthesized. They exhibited energy transfer from Mn 2+ to Sb 3+ ions, producing color-tunable luminescence and multiband emission. The dual emission leveraged d-d transitions in Mn 2+ for green emission and self-trapped excitons in Sb 3+ for broad red emission. Precise control of the excitation energy created broad color gamut modulation on the CIE chromaticity diagram, ranging across green, yellow, and red. Furthermore, there were distinct temperature sensitivities of the Mn 2+ and Sb 3+ emission centers, leading to robust fluorescence intensity ratios for temperature sensing with high relative sensitivity (3.92% K –1 ) and absolute sensitivity (5.42% K –1 ). These results indicated significant (TPMP) 2 MnBr 4: Sb 3+ potential for optical temperature sensing and dynamic information for anticounterfeiting encryption. This work provides a pathway for energy-transfer dynamics and luminescence applications of Mn 2+ -Sb 3+ systems.