Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing

Guojun Zhou; Pei Wang; Qiqiong Ren; Nan Zhang; Jin Lv; Yilin Mao; Jianwei Qiao; Xian-Ming Zhang

doi:10.1038/s41377-025-02154-9

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Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing

Original Articles

- Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing
- Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing
- Light: Science & Applications 2026年15卷第3期页码：1007-1016
- Affiliations：
  
  1.Key Laboratory of Magnetic Molecules and Magnetic Information Material, Ministry of Education, School of Chemistry and Chemistry Engineering, Shanxi Normal University, Taiyuan, China
  2.College of Chemistry & Chemical Engineering, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, China
  3.Department of Applied Chemistry, Yuncheng University, Yuncheng, Shanxi, China
- Author bio：
  
  Guojun Zhou (zhougj@sxnu.edu.cn)
  Jianwei Qiao (qiaojianwei@tyut.edu.cn)
  Xian-Ming Zhang (zhangxianming@tyut.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-02154-9
  中图分类号：
- 收稿：2025-09-20，
  
  修回：2025-11-30，
  
  录用：2025-12-01，
  
  网络首发：2026-01-28，
  
  纸质出版：2026-03-31
- Accepted：
Scan QR Code
Guojun Zhou, Pei Wang, Qiqiong Ren, 等. Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing[J]. Light: Science & Applications, 2026,15(3):1007-1016.

Zhou, G. J. et al. Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing. Light: Science & Applications, 15, 1007-1016 (2026).
Guojun Zhou, Pei Wang, Qiqiong Ren, 等. Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing[J]. Light: Science & Applications, 2026,15(3):1007-1016. DOI： 10.1038/s41377-025-02154-9.

Zhou, G. J. et al. Spin-canted Mn–Mn coupling in symmetry-broken metal chloride dimer with dual-responsive luminescence and sensing. Light: Science & Applications, 15, 1007-1016 (2026). DOI： 10.1038/s41377-025-02154-9.

摘要

Abstract

Magneto-optical coupling provides a powerful alternative to crystal field engineering for modulating Mn

luminescence. However

precise control over Mn–Mn coupling is hindered by the complex spin-electron super-exchange interactions. Herein

we report a symmetry-broken Mn(Ⅱ) chloride dimer

Mn)(CH

CN)MnCl

synthesized through a crown-ether-assisted supramolecular strategy. The dimer features a 7-coordinated pentagonal bipyramid and a 4-coordinated tetrahedron linked by a distorted Mn–Cl–Mn bridge (129°)

which promotes rare spin-canted Mn–Mn coupling and creates a novel Mn–Mn luminescent center. This center exhibits a red emission at 638 nm with an unusually short lifetime of 0.42 ms

which is attributed to the relaxation of spin-forbidden

–

transitions. Notably

the emission undergoes a 30 nm blue-shift upon heating (5–305 K) due to the thermal suppression of spin-canting

and a 40 nm blue-shift under applied pressure (0–20 MPa) resulting from reduced orbital overlap. This dual-responsive luminescence originates from spin-canted weak ferromagnetism

which induces a rearrangement of energy-levels by separating antibonding orbitals. Using this effect

we have demonstrated an optical manometer for real-time underwater depth sensing. These findings highlight spin-canted Mn(Ⅱ) dimers as a promising platform for stimuli-responsive luminescence and reveal a new mechanism for

–

transition modulation.

关键词

Keywords

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