Liu Meng, Tang Ge, Liu Yi, Jiang Feng-Lei
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin 300387, P. R. China.
J Phys Chem Lett. 2024 Feb 22;15(7):1975-1984. doi: 10.1021/acs.jpclett.3c03413. Epub 2024 Feb 12.
Colloidal quantum dots (QDs) consist of an inorganic core and organic surface ligands. Surface ligands play a dominant role in maintaining the colloidal stability of QDs and passivating the surface defects of QDs. However, the original ligands introduced in the synthetic process of QDs cannot meet the requirements for diverse applications; therefore, ligand exchanges with functional ligands are mandatory. Understanding the ligand exchange process requires a comprehensive combination of the concepts and techniques of surface chemistry. In this Perspective, the ligand exchange process is discussed in detail. Specifically, we elaborate on the thermodynamics that can reveal the feasibility and mechanism of ligand exchange. It depicts a critical physical picture of the surface of QDs along with the following ligand exchange.
胶体量子点（QDs）由无机核和有机表面配体组成。表面配体在维持量子点的胶体稳定性和钝化量子点的表面缺陷方面起着主导作用。然而，量子点合成过程中引入的原始配体无法满足各种应用的需求；因此，与功能配体进行配体交换是必不可少的。理解配体交换过程需要综合运用表面化学的概念和技术。在这篇综述中，将详细讨论配体交换过程。具体而言，我们阐述了能够揭示配体交换可行性和机制的热力学。它描绘了量子点表面以及后续配体交换的关键物理图景。
