高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (4): 20260007.doi: 10.7503/cjcu20260007

• 研究论文 • 上一篇    下一篇

一种金铜簇配位聚合物的制备与力致变色性能

韩雨宸, 张蒙, 杨琪, 彭秋晨, 李恺()   

  1. 郑州大学化学学院,郑州 450001
  • 收稿日期:2026-01-01 出版日期:2026-04-10 发布日期:2026-02-01
  • 通讯作者: 李恺 E-mail:likai@zzu.edu.cn
  • 作者简介:第一联系人:共同第一作者.
  • 基金资助:
    国家自然科学基金(22371264);国家自然科学基金(22505228)

Preparation and Mechanochromism Property of a Gold-Copper Cluster Coordination Polymer

HAN Yuchen, ZHANG Meng, YANG Qi, PENG Qiuchen, LI Kai()   

  1. College of Chemistry,Zhengzhou University,Zhengzhou 450001,China
  • Received:2026-01-01 Online:2026-04-10 Published:2026-02-01
  • Contact: LI Kai E-mail:likai@zzu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22371264)

摘要:

合成了一种具有原子精确结构的新型金铜配位聚合物[AuCu(L)2] n (L=苯乙炔), 其在聚集态下表现出良好的发光性能. [AuCu(L)2] n 具有一维链状结构, 能够通过一锅法在室温条件下高效合成. 在研磨作用下, [AuCu(L)2] n 从浅黄色变为红色, 发射波长从550 nm红移至620 nm. 在二氯甲烷蒸汽作用下, 红色的[AuCu(L)2] n 可以恢复为浅黄色, 发光也可恢复为黄色发光. 该可逆变化过程表现出优异的抗疲劳性, 使得[AuCu(L)2] n 在荧光防伪材料领域具有潜在应用前景. 机理研究表明, [AuCu(L)2] n 在研磨后从晶态向无定形态转变, 原本的金属-金属键和分子内、 分子间的大量π-π相互作用被破坏, 阻断了簇中心发光通道, 是导致其发光和颜色改变的主要原因.

关键词: 配位聚合物, 金铜簇, 力致变色

Abstract:

An atomic precise gold-copper coordination polymer, [AuCu(L)2n (L=phenylacetylene), was synthesized, which exhibits excellent luminescent properties in the aggregated state. [AuCu(L)2n has a one⁃dimensional chain⁃like structure and can be efficiently synthesized by a one⁃pot method at room temperature. Upon grinding, the color of [AuCu(L)2n changes from yellow to red, and the emission wavelength red⁃shifts from 550 nm to 620 nm. Under the action of dichloromethane vapor, the red [AuCu(L)2n powders can revert to yellow. This reversible change process exhibits excellent fatigue resistance, making [AuCu(L)2n suitable for the application in fluorescent anti⁃counterfeiting materials. Mechanistic study shows that [AuCu(L)2n transforms from a crystalline state to an amorphous state after grinding. Meanwhile, the original metal⁃metal bonds and a large number of π-π interactions within and between molecules are disrupted, blocking the long-range cluster center luminescence channel, which is the main reason for its luminescence and color change.

Key words: Coordination polymer, Gold-copper cluster, Mechanochromism

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