大学化学 >> 2025, Vol. 40 >> Issue (8): 249-254.doi: 10.12461/PKU.DXHX202410003

化学实验 上一篇    下一篇

Ph―C≡C―Cu2.5的力致变色现象探究——推荐一个物理化学实验

蒋海英, 宋柳宏, 成阳阳, 岳可芬, 彭明丽, 郭慧林   

  1. 西北大学化学与材料科学学院, 西安 710127
  • 收稿日期:2024-10-08 录用日期:2024-11-27 发布日期:2025-07-19
  • 通讯作者: 蒋海英 E-mail:jianghy@nwu.edu.cn
  • 基金资助:
    陕西省线下一流本科课程建设项目(物理化学, 物理化学实验)；西北大学本科人才培养建设项目(XM05222079, XM05232381,XM05232428)；教师思想政治和师德师风建设研究(XD2003SD13)；2023年省级大学生创新创业训练计划(S202310697453X)；2024年国家级大学生创新创业训练计划(202410697200)

Mechanochromic Luminescence in Ph―C≡C―Cu2.5: A Comprehensive Physical Chemistry Experiment

Haiying Jiang, Liuhong Song, Yangyang Cheng, Kefen Yue, Mingli Peng, Huilin Guo   

  1. College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
  • Received:2024-10-08 Accepted:2024-11-27 Published:2025-07-19
  • Contact: Haiying Jiang E-mail:jianghy@nwu.edu.cn

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摘要： 介绍了一个物理化学实验——Ph―C≡C―Cu2.5的力致变色现象探究。该实验以本课题组自主研发的化合物Ph―C≡C―Cu2.5为抓手，通过对其施加正压力和剪切力观察其颜色变化，并利用紫外-可见吸收光谱和稳态荧光光谱对其进行表征，探究其力致变色机理。该实验涉及物理化学、仪器分析等多学科知识，帮助学生深刻理解物质的构效关系，培养学生的创新意识。

关键词: Ph―C≡C―Cu2.5, 力致变色, 构效关系, 正压力, 剪切力

Abstract: This study presents a novel physicochemical experiment investigating the mechanochromic behavior of a copper(I)-alkynyl coordination complex (Ph―C≡C―Cu2.5). Utilizing the compound of Ph―C≡C―Cu2.5 independently developed by our group as a model system, the experimental protocol involves monitoring macroscopic color responses under controlled mechanical stimuli (vertical pressure and shear forces), coupled with spectroscopic characterization through UV-Vis absorption and steady-state fluorescence measurements. The systematic investigation elucidates the relationship between mechanical-force-induced structural modifications and optoelectronic property variations, demonstrating a direct structure-activity correlation. Integrating principles from physical chemistry and advanced analytical techniques, this experiment enhances students’ understanding of mechanoresponsive materials while fostering critical thinking through mechanistic analysis of supramolecular interactions.

Key words: Ph―C≡C―Cu2.5, Mechanochromism, Structure-activity relationship, Vertical pressure, Shear forces