近日，苏州大学王亚星团队报道了超分子卤化铀配合物的合成及光学性质。相关论文于2026年5月11日发表在《结构化学》杂志上。

超分子模板法已成为分离离散型金属卤化物阴离子并调控其光物理性质的有效策略；然而，该方法在锕系卤化物中的应用在很大程度上仍未被探索。

研究组报道了一种超分子铀(IV)卤化物 (CH₃CN)[K(18-冠-6)]₂UCl₆的合成、晶体结构及光学性质。单晶X射线衍射显示，离散的八面体 [UCl₆]^2- 单元与 [K(18-冠-6)]⁺阳离子达到电荷平衡，形成零维超分子结构。光致发光测量显示出370 nm和423 nm两个发射带，归属于U(IV)的6d→5f电子跃迁。值得注意的是，370 nm处的发射具有超快衰减分量（约300 ps），表明其辐射速率常数较大。这些结果表明，超分子模板法能够稳定并分离出离散的铀卤化物单元，为研究锕系材料中与光物理相关的5f电子结构及6d-5f跃迁提供了一个通用平台。

附：英文原文

Title: Synthesis and optical properties of supramolecular uranium(IV) halide complexes

Author: anonymous

Issue&Volume: 2026-05-11

Abstract: Supramolecular templating has emerged as an effective strategy for isolating discrete metal halide anions and modulating their photophysical properties; however, its application to actinide halides remains largely unexplored. Herein, we report the synthesis, crystal structure, and optical properties of a supramolecular uranium(IV) halide, (CH3CN)[K(18-crown-6)]2UCl6. Single-crystal X-ray diffraction reveals discrete octahedral [UCl6]2- units charge balanced by [K(18-crown-6)]+ cations, resulting in a zero-dimensional supramolecular architecture. Photoluminescence measurements revealed two emission bands at 370 and 423 nm, which were assigned to U(IV) 6d→5f electronic transitions. Notably, the emission at 370 nm displays an ultrafast decay component (～300 ps), indicative of a large radiative rate constant. These results demonstrate that supramolecular templating enables the stabilization and isolation of discrete uranium halide units, providing a versatile platform for investigating the 5f electronic structure and 6d-5f transitions associated with photophysics in actinide materials.

DOI: 10.1016/j.cjsc.2026.100977

Source: http://cjsc.ac.cn/cms/issues/1049