Yang Yuelin, Zhang Haoyang, Deng Yalei, Kong Xinke, Wang Yuanyuan
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
Nanoscale. 2024 Sep 26;16(37):17230-17247. doi: 10.1039/d4nr02769h.
As a crucial post-synthesis method, ion exchange allows for precise control over the composition, interface, and morphology of nanocrystals at the atomic scale, achieving material properties that are difficult to obtain with traditional synthesis techniques. In nanomaterial science, semiconductor magic-size clusters (MSCs), with their atomic-level precision and unique quantum confinement effects, serve as a bridge between molecules and nanocrystals. Despite this, research on ion exchange in MSCs is still in its infancy. This review introduces the principles of ion exchange and reactions in colloidal nanocrystals and MSCs, analyzing the importance and challenges of ion exchange in studying MSCs. This paper begins with a focus on the current research progress of cation and anion exchange in II-VI and III-V semiconductor MSCs. Then, the common methods for characterizing MSCs during the ion exchange process are discussed. Finally, the article envisions future research directions based on MSCs' ion exchange. Research on MSCs' ion exchange not only aids in designing MSCs with complex functionalities, but also plays an essential role in elucidating the ion exchange mechanisms in nanocrystals, providing new insights for the innovative design and synthesis of nanomaterials.
作为一种关键的合成后方法，离子交换能够在原子尺度上精确控制纳米晶体的组成、界面和形态，实现传统合成技术难以获得的材料性能。在纳米材料科学中，半导体神奇尺寸团簇（MSC）凭借其原子级精度和独特的量子限制效应，成为分子与纳米晶体之间的桥梁。尽管如此，关于MSC中离子交换的研究仍处于起步阶段。本综述介绍了离子交换的原理以及在胶体纳米晶体和MSC中的反应，分析了离子交换在研究MSC中的重要性和挑战。本文首先重点关注II-VI族和III-V族半导体MSC中阳离子和阴离子交换的当前研究进展。然后，讨论了在离子交换过程中表征MSC的常用方法。最后，文章基于MSC的离子交换展望了未来的研究方向。对MSC离子交换的研究不仅有助于设计具有复杂功能的MSC，还在阐明纳米晶体中的离子交换机制方面发挥着重要作用，为纳米材料的创新设计和合成提供了新的见解。
