Citation: Xiulian Cai, Qilin Wei, Yaping Gong, Tong Chang, Tongtong Kou, Ziyang Song, Zengshan Yue, Huanxin Su, Yuanxiang You, Chengmin Ji, Xinxin Han, Shiguo Han, William W. Yu. Enhanced luminescence efficiency and stability in Mn-based organic-inorganic hybrid metal halides via chlorination effect[J]. Chinese Chemical Letters, ;2026, 37(9): 111515. doi: 10.1016/j.cclet.2025.111515 shu

Enhanced luminescence efficiency and stability in Mn-based organic-inorganic hybrid metal halides via chlorination effect

Xiulian Cai ^{a, c, d} ,
Qilin Wei ^{a, c, d} ,
Yaping Gong ^g ,
Tong Chang ^{a, c, d, *,} ,
Tongtong Kou ^{a, c, d} ,
Ziyang Song ^{a, c, d} ,
Zengshan Yue ^{a, c, d} ,
Huanxin Su ^{a, c, d} ,
Yuanxiang You ^{a, c, d} ,
Chengmin Ji ^e ,
Xinxin Han ^f ,
Shiguo Han ^{a, b, c, d, *,} ,
William W. Yu ^{a, c, d, *,}

a.
School of Chemistry and Chemical Engineering, Shandong University, Ji’nan 250100, China
b.
Shenzhen Research Institute of Shandong University, Shenzhen 518000, China
c.
Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies, Ji’nan 250100, China
d.
Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, Qingdao 266237, China
e.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
f.
School of Physical Science and Technology, Guangxi University, Nanning 530004, China
g.
Shandong Sport University, Ji’nan 250102, China

chtoon@sdu.edu.cn

sghan@sdu.edu.cn

wyu6000@gmail.com

Received Date: 28 April 2025
Revised Date: 25 June 2025
Accepted Date: 25 June 2025
Available Online: 26 June 2025

Figures(6)

Mn-based organic-inorganic hybrid metal halides have attracted extensive attention due to their excellent luminescence properties, easy processing, low cost, and non-toxicity. Herein, we effectively improved the luminescence properties and stability of the [C₆H₁₄N]₂MnBr₄ adopting the chlorination effect. Specifically, through the introduction of chlorine atom on the cations, the Mn-Mn distance in [C₆H₁₃NCl]₂MnBr₄ increases from 8.061 Å to 8.668 Å, thereby suppressing excitation energy transfer between adjacent Mn²⁺ centers and enhancing the overall luminescent efficiency from 38.8% to 74.5%. Further experimental and theoretical analyses reveal that such chlorination effect increased the H···Cl interactions, significantly improving the environmental stability of Mn-based metal halides. Moreover, compare to [C₆H₁₄N]₂MnBr₄, the CIE chromaticity coordinates of [C₆H₁₃NCl]₂MnBr₄ are much closer to the NTSC green standard (0.23, 0.69). Our work provides new insights into the relationship between the cation structure and optical properties in Mn-based metal halides and sheds light on the design of stable metal halide materials.
- Manganese halide,
- Luminescence,
- Chlorination effect,
- Photophysical properties,
- Stability
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沈阳化工大学材料科学与工程学院沈阳 110142