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Updated: Oct 13, 2025

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
Published on: September 13, 2024
Room-temperature phosphorescence of manganese-based metal halides
Yue Zhang1, Dian Chen1, Kai-Hang Jin1
1College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China. wangql@nankai.edu.cn.
Abstract:
Room-temperature phosphorescent (RTP) materials can be used in anti-counterfeiting, organic light-emitting diodes and displays. However, designing RTP materials with a long luminescence lifetime and high solid-state emission efficiency is still a challenge. Due to the strong quantum confinement effect and the hydrogen bond network structure formed by polyamino sites, 0D RTP materials usually have a higher fluorescence quantum yield and longer phosphorescence lifetime. Here, we synthesized four manganese-based metal halides of different dimensions with a long lifetime and high luminous efficiency by changing organic cations: {[H2DAP]MnCl4} (1, DAP = 1,3-propanediamine, 2D), {[(H2MELA)2MnCl5]Cl} (2, MELA = melamine, 1D), [H2TAP]2MnCl6 (3, TAP = 2,4,6-triaminopyrimidine, 0D) and [H2MXD]2MnCl6 (4, MXD = m-xylylenediamine, 0D). [H2MXD]2MnCl6 (4) has a long lifetime (11 ms) and the maximum photoluminescence quantum yield (31.05%). Our work provides a new procedure for the development of RTP materials with high quantum yields.
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