期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 36, 页码 15378-15401出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201911135
关键词
capping agents; crystal growth; metal nanocrystal; shape control; structure-property relationship
资金
- NSF [DMR-1505400, CHE-1505441, CHE-1804970]
- Georgia Institute of Technology
Surface capping agents have been extensively used to control the evolution of seeds into nanocrystals with diverse but well-controlled shapes. Here we offer a comprehensive review of these agents, with a focus on the mechanistic understanding of their roles in guiding the shape evolution of metal nanocrystals. We begin with a brief introduction to the early history of capping agents in electroplating and bulk crystal growth, followed by discussion of how they affect the thermodynamics and kinetics involved in a synthesis of metal nanocrystals. We then present representative examples to highlight the various capping agents, including their binding selectivity, molecular-level interaction with a metal surface, and impacts on the growth of metal nanocrystals. We also showcase progress in leveraging capping agents to generate nanocrystals with complex structures and/or enhance their catalytic properties. Finally, we discuss various strategies for the exchange or removal of capping agents, together with perspectives on future directions.
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