期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 46, 页码 14294-14298出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201608271
关键词
DNA self-assembly; nanodimers; nanoparticles; plasmonics; sintering
资金
- NNSFC [21425521, 21273214, 21521001]
- MOST of China [2016YFA0201300]
- Hefei Center for Physical Science and Technology [2014FXCX010]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
Achieving highly tunable and localized surface plasmon resonance up to near infrared (NIR) regions is a key target in nanoplasmonics. In particular, a self-assembly process capable of producing highly uniform and solution-processable nanomaterials with tailor-made plasmonic properties is lacking. We herein address this problem through a conjunctive use of wet Ag+ soldering and dry thermal sintering to produce nanodimer-derived structures with precisely engineered charge-transfer plasmon (CTP). The sintered dimers are water soluble, featuring gradually shifted CTP spanning an 800 nm wavelength range (up to NIR II). Upon silica removal, the products are grafted by DNA to offer surface functionality. This process is also adaptable to DNA-linked AuNP dimers toward plasmonic meta-materials via DNA-guided soldering and sintering.
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