The last 5 years have witnessed rapid progress in the field of hybrid nanostructures toward enhanced optical and electronic properties. On this topic, we focus on the relevant progress that has been achieved on the basis of cation/anion exchange reactions (CERs/AERs). Different from those direct synthesis strategies, CERs/AERs can offer more freedom in tuning the chemical composition, crystal phases, doping, interfaces, and morphologies, which are key parameters to determine the optical and electronic properties of the target products. We present several examples, e.g., doped quantum dots (QDs), engineered core-shell QDs, metal-semiconductor hybrid nanostructures, hollow structures, and inorganic perovskite nanocrystals. These upgraded structures afforded by CERs/AERs generally exhibit improved properties, such as increased quantum yields, prolonged lifetimes, and well-engineered band gaps for charge transportation and recombination, thus providing more opportunities for further advanced applications.

在过去的5年中，混合纳米结构领域朝着增强的光学和电子特性的方向快速发展。在此主题上，我们重点介绍基于阳离子/阴离子交换反应（CER / AER）所取得的相关进展。与那些直接合成策略不同，CER / AER可以在调节化学成分，晶相，掺杂，界面和形态方面提供更大的自由度，而化学成分，晶相，掺杂，界面和形态是确定目标产品的光学和电子特性的关键参数。我们介绍了几个示例，例如，掺杂量子点（QD），工程核-壳QD，金属-半导体混合纳米结构，中空结构和无机钙钛矿纳米晶体。CER / AER提供的这些升级结构通常显示出改进的性能，例如增加的量子产率，