期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 27, 页码 9275-9281出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904828
关键词
copper nanorods; photothermal actuators; seeded growth; space-confined synthesis; surface plasmon resonance
资金
- U.S. National Science Foundation [CHE-1808788]
- China Scholarship Council (CSC)
- National Key RAMP
- D Program of China [2016YFE0129600]
- National Natural Science Foundation of China [21673150, 21611540336, 21703146]
- Thousand Youth Talents Plan
Herein, we show that copper nanostructures, if made anisotropic, can exhibit strong surface plasmon resonance comparable to that of gold and silver counterparts in the near-infrared spectrum. Further, we demonstrate that a robust confined seeded growth strategy allows the production of high-quality samples with excellent control over their size, morphology, and plasmon resonance frequency. As an example, copper nanorods (CuNRs) are successfully grown in a limited space of preformed rod-shaped polymer nanocapsules, thereby avoiding the complex nucleation kinetics involved in the conventional synthesis. The method is unique in that it enables the flexible control and fine-tuning of the aspect ratio and the plasmonic resonance. We also show the high efficiency and stability of the as-synthesized CuNRs in photothermal conversion and demonstrate their incorporation into nanocomposite polymer films that can be used as active components for constructing light-responsive actuators and microrobots.
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