全无机钙钛矿量子点的疏水改性及LED应用——推荐一个本科生综合化学实验

Hydrophobic Modification of Inorganic Perovskite Quantum Dots and LED Applications:Recommending a Comprehensive Chemistry Experiment for Undergraduates

介绍一个综合化学实验——全无机钙钛矿量子点的疏水改性及LED应用。我们以三甲基氯硅烷和莫来石纤维增强SiO_(2)气凝胶的疏水性和韧性,获得疏水SiO_(2)气凝胶,随后以该疏水SiO_(2)气凝胶吸附全无机钙钛矿量子点形成CsPbX_(3)@SiO_(2)气凝胶复合材料。通过接触角、红外光谱、X射线衍射等表征手段证实SiO_(2)气凝胶的成功改性,并制作了LED器件。本实验涉及材料的合成、表征和应用,可作为化学和应用化学专业学生的综合化学实验,有助于提高学生的科学素养,激发对科学研究的兴趣。

A comprehensive chemical synthesis experiment,that is,hydrophobic modification of inorganic perovskite quantum dots and LED applications,is introduced in this article.The SiO_(2)aerogel was prepared with tetraethyl orthosilicate as the raw material,and the hydrophobicity and toughness of SiO_(2)aerogel were enhanced by trimethylchlorosilane and mullite fibers,respectively.Finally,CsPbX_(3)@SiO_(2)aerogel composites were obtained by adsorption of inorganic perovskite quantum dots on hydrophobic SiO_(2)aerogel.The successful modification of the SiO_(2)aerogel was characterized by contact angle,infrared spectroscopy and X-ray diffraction,and the LED devices were fabricated.This experiment involves synthesis,characterization,and application of materials.It can be used as a comprehensive chemistry experiment for undergraduates majoring in chemistry and applied chemistry,which helps to improve students’scientific literacy and stimulate their interest in scientific research.