High-entropy alloy nanopatterns by prescribed metallization of DNA origami templates

作者：Xie, Mo; Fang, Weina; Qu, Zhibei; Hu, Yang; Zhang, Yichi; Chao, Jie; Shi, Jiye; Wang, Lihua; Wang, Lianhui; Tian, Yang; Fan, Chunhai^*; Liu, Huajie^*

来源：Nature Communications, 2023, 14(1): 1745.

DOI：10.1038/s41467-023-37333-y

• MOLECULAR-DYNAMICS
• FORCE-FIELD
• METAL
• DESIGN
• GOLD

Morphology, composition, and uniformity of highly entropic nanoalloys are critical to their properties and applications. Here, the authors develop a DNA origami-based metallization reaction concept for the precise synthesis of multimetallic nanopatterns. @@@ High-entropy multimetallic nanopatterns with controlled morphology, composition and uniformity hold great potential for developing nanoelectronics, nanophotonics and catalysis. Nevertheless, the lack of general methods for patterning multiple metals poses a limit. Here, we develop a DNA origami-based metallization reaction system to prescribe multimetallic nanopatterns with peroxidase-like activities. We find that strong coordination between metal elements and DNA bases enables the accumulation of metal ions on protruding clustered DNA (pcDNA) that are prescribed on DNA origami. As a result of the condensation of pcDNA, these sites can serve as nucleation site for metal plating. We have synthesized multimetallic nanopatterns composed of up to five metal elements (Co, Pd, Pt, Ag and Ni), and obtained insights on elemental uniformity control at the nanoscale. This method provides an alternative pathway to construct a library of multimetallic nanopatterns.

• 单位
  上海交通大学; 同济大学; 复旦大学; 南京邮电大学; 中国科学院