大学化学 >> 2022, Vol. 37 >> Issue (5): 2109089.doi: 10.3866/PKU.DXHX202109089

所属专题: 第2届全国大学生化学实验创新设计竞赛

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罗丹明6G酰肼水杨醛席夫碱锌离子配合物的合成及光致变色性能表征综合实验

李媛媛1,*(), 丁洋1, 张婷婷1, 李雯婷1, 李恺2,*()   

  1. 1 河南工业大学化学化工学院,郑州 450001
    2 郑州大学化学学院,郑州 450001
  • 收稿日期:2021-09-24 录用日期:2021-10-29 发布日期:2022-03-08
  • 通讯作者: 李媛媛,李恺 E-mail:yuanyuanli@haut.edu.cn;likai@zzu.edu.cn
  • 作者简介:Email: likai@zzu.edu.cn (李恺)
    Email: yuanyuanli@haut.edu.cn (李媛媛)
  • 基金资助:
    河南省重点研发与推广专项(科技攻关)项目(202102310006);河南工业大学本科教育教学改革研究与实践项目(JXYJ2020032);国家级大学生创新创业训练计划项目(202010463003);河南工业大学青年骨干教师培育计划;郑州大学本科教育教学改革研究与实践项目(2020zzuJXLX002);郑州大学本科教育教学改革研究与实践项目(2020zzuJXLX062)

A Comprehensive Experiment of Synthesis and Photochromic Characterization of Rhodamine 6G Hydrazide Salicylaldehyde Schiff Base Zinc Ion Complex

Yuanyuan Li1,*(), Yang Ding1, Tingting Zhang1, Wenting Li1, Kai Li2,*()   

  1. 1 School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
    2 College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
  • Received:2021-09-24 Accepted:2021-10-29 Published:2022-03-08
  • Contact: Yuanyuan Li,Kai Li E-mail:yuanyuanli@haut.edu.cn;likai@zzu.edu.cn

摘要:

设计了一个6学时的综合化学实验,结合光致变色这一化学研究热点,向学生传授有机合成、波谱分析等相关知识。在本实验中,学生通过两步反应合成罗丹明6G酰肼水杨醛席夫碱分子,进而与锌离子结合,得到具有可逆光致变色性能的罗丹明6G酰肼水杨醛席夫碱锌离子配合物。学生通过观察溶液和固体基质中该配合物在光照前后的颜色和紫外光谱变化,了解光致变色现象。结合课堂讲解、文献阅读,了解光致变色现象产生的机理。本实验所需的试剂仪器简单、成本低廉,适于在化学或相关专业的本科实验教学中推广。此外,本实验现象明显,具有较强的趣味性,通过本实验不但可以提高学生的知识水平和专业素养,也可以培养其对化学的兴趣和热爱。

关键词: 光致变色, 罗丹明6G, 配合物

Abstract:

A 6-class comprehensive chemistry experiment was designed to introduce the research hotspot of photochromism, aiming to impart the organic synthesis, spectral analysis, and other related knowledge to students. In this experiment, the rhodamine 6G hydrazide salicylaldehyde Schiff base was synthesized through two steps. This molecule was then combined with zinc ion to obtain the rhodamine 6G hydrazide salicylaldehyde Schiff base zinc ion complex, which exhibits photochromic property. Students can learn about photochromic phenomena by observing the color and UV spectrum changes in the complex before and after UV light irradiation, both in solution and in solid substrates. This, combined with classroom instructions and literature reading, allows students to understand the mechanism of photochromism. The reagents and instruments required for this experiment are simple and cost-effective, which makes the experiment suitable for undergraduate chemistry experiments or other related majors. In addition, these experimental phenomena are notable and interesting. Through this experiment, students can not only improve their knowledge and professional qualities but also cultivate their interest and love for chemistry.

Key words: Photochromism, Rhodamine 6G, Complex

MSC2000: 

  • G64