Citation: Yinglong WANG, Jinlin ZHAI, Jianjie XU, Xinyuan XIE, Sijie FAN, Qionghua JIN, Hongliang HAN, Zhongfeng LI. Synthesis and structural characterization of Cu(Ⅰ) complexes containing a bridging nitrogen ligand with a double bond and a diphosphine ligand[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(11): 2420-2428. doi: 10.11862/CJIC.20260235 shu

Synthesis and structural characterization of Cu(Ⅰ) complexes containing a bridging nitrogen ligand with a double bond and a diphosphine ligand

Yinglong WANG ^{1, #} ,
Jinlin ZHAI ^{1, #} ,
Jianjie XU ¹ ,
Xinyuan XIE ¹ ,
Sijie FAN ¹ ,
Qionghua JIN ^{1, 2, 3,,} ,
Hongliang HAN ¹ ,
Zhongfeng LI ¹

1.
Department of Chemistry, Capital Normal University, Beijing 100048, China
2.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China
3.
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China

Corresponding author: Qionghua JIN, jinqh204@163.com; jinqh@cnu.edu.cn
Received Date: 29 July 2026
Revised Date: 21 September 2026

Figures(6)

Three novel orange-yellow emitting Cu(Ⅰ) complexes—[Cu₂I₂(bpen)(POP)₂] (1), [Cu₂Br₂(bpen)(POP)₂]·2CH₂Cl₂ (2), and [Cu₂Cl₂(bpen)(POP)₂] (3)—were successfully synthesized using the bridging nitrogen ligand (bpen), and diphosphine ligand (POP) as functional ligands. The crystal structures and photophysical properties of these three target complexes were comprehensively characterized by single-crystal X-ray diffraction, ¹H NMR, infrared spectroscopy, UV-Vis absorption spectroscopy, and fluorescence spectroscopy. Fluorescence measurements revealed maximum emission wavelengths of 592, 598, and 599 nm for the three complexes. All complexes exhibited outstanding orange-yellow luminescence. Mechanistic analysis indicates that modulating ligand conjugation effects and adjusting bridging coordination modes can effectively control excited-state behavior of the complexes and then enable precise tuning of their luminescent performance.
- luminescent materials,
- Cu(Ⅰ) complexes,
- bridging,
- π-π conjugation,
- long-lived luminescence
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