期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 13, 页码 5481-5489出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b00355
关键词
-
资金
- National Key R&D Program of China [2018YFB1107700]
- National Natural Science Foundation of China [21471118, 91545205, 91622103]
- National Key Basic Research Program of China [2014CB239203]
- Innovation Team of Wuhan University [2042017kf0232]
We report metallurgy on the nanoscale to generate metal nanoparticles and their simultaneous patterning in a single step. This is achieved by the self-reduction of porous metal-organic framework crystals using nanosecond pulsed laser irradiation. Metal nanoparticles of Fe, Co, Ni, Cu, Zn, Cd, In, Bi, and Pb with uniform sizes (controllable between 3 to 200 nm) and gaps (as narrow as 2 nm) are produced by nine different metal-organic frameworks, where atomically dispersed non-noble metal ions are reduced and gathered across the pores. The instant light absorption and cooling at local positions by a laser allows for precise and efficient patterning of metal nanoparticles. This new method is suitable for device fabrication at a speed of 15 mm(2) s(-1) on glass, consuming only 1.5 W of power. A large variety of metal nanoparticle three-dimensional architectures are demonstrated, among which one architecture exhibits an enhanced plasmonic effect homogeneously across the entire pattern for the detection of molecules at an extremely low concentration (10(-12) M). These architectures are extremely stable under air and humidity during production, use, and storage, without altering the oxidation state, for 6 months.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据