Zhang Yue, Chen Dian, Jin Kai-Hang, Zang Shuang-Quan, Wang Qing-Lun
College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China.
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China.
Dalton Trans. 2021 Nov 30;50(46):17275-17280. doi: 10.1039/d1dt03206b.
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: {[HDAP]MnCl} (1, DAP = 1,3-propanediamine, 2D), {[(HMELA)MnCl]Cl} (2, MELA = melamine, 1D), [HTAP]MnCl (3, TAP = 2,4,6-triaminopyrimidine, 0D) and [HMXD]MnCl (4, MXD = -xylylenediamine, 0D). [HMXD]MnCl (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.
