基于仪器搭建的紫外-可见光谱探究型教学实验设计  

Exploratory teaching experiment based on construction and applications of UV-Vis spectrometer

作　　者：赵浩 郭鑫 吴忠云 杨玲[1] 徐金荣[1] 郑俊荣 ZHAO Hao;GUO Xin;WU Zhongyun;YANG Ling;XU Jinrong;ZHENG Junrong(National Demonstration Center for Experimental Chemistry Education,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China)

机构地区：[1]北京大学化学与分子工程学院化学国家级实验教学示范中心,北京100871

出　　处：《实验技术与管理》2023年第1期154-159,共6页Experimental Technology and Management

基　　金：国家自然科学基金项目(NSFC-21627805)。

摘　　要：设计了一款用于本科实验教学的低成本可重复组装拆解的紫外-可见光谱仪。要求学生利用光学元件搭建具有高分辨率的紫外-可见光谱仪,测试系列共轭分子的吸收光谱,并将实验结果与一维势阱方程和Gaussian软件计算结果进行相互验证。该实验有助于学生全面深入了解仪器原理及构造,探究各个部件的作用,深入体会现代仪器的原理。学生通过这一实操性强的实验,能够学习与验证相对抽象深奥的量子力学原理,锻炼动手能力、创新思维和知识融会贯通能力,学习兴趣大大提高。The design and implementation of a low-cost ultraviolet-visible(UV-Vis)spectrometer are presented.The spectrometer can be disassembled and reassembled with ease.In classroom,students build it from basic components,and use the spectrometers they build to measure UV-Vis absorption spectra of a series of conjugated molecules to test the applicability of the quantum mechanical one-dimensional particle-in-box(1D-PIB)model to real molecular systems and Gaussian software calculation.This experiment help students with in-depth understanding of instrument structure and the principle behind the modern instruments by constructing instrument and exploring the function of each component of the spectrometer.Through this practical experiment,students can learn and verify the relatively abstract and profound principles of quantum mechanics.It also cultivate students’ability of manipulation,knowledge integration and innovative thinking.In addition,the inquiry-based learning mode also greatly increases students’interest in learning.

关 键 词：紫外-可见光谱仪 自行搭建仪器 实验教学 一维势阱模型 

分 类 号：O6-339[理学—化学]