Synthesis and isolation of molybdenum atomic wires

Synthesis and isolation of molybdenum atomic wires
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DOI:
10.1021/nl0725188
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发表时间:
2008-01-01
期刊:
影响因子:
10.8
通讯作者:
Dresselhaus, Mildred S.
Dresselhaus, Mildred S.
中科院分区:
材料科学1区
文献类型:
--
作者:
Muramatsu, Hiroyuki;Hayashi, Takuya;Dresselhaus, Mildred S.

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纳米科学和纳米技术的主要挑战之一在于金属原子尺度纳米线的生产和分离(Benzryadin,C. N.的; Lau,A.; Tinkham,M. Q. Nature 2000,404,971-974; Zach,M. P的; Ng,K. H.的;彭纳河M. Science 2000,290,2120-2123; Nilius,N.;沃利斯,T. M.;何,W。Science 2002,297,1853-1856.)。在这里,我们报告了一种独特的和可控的方式隔离单个原子钼(Mo)链的双壁碳纳米管,表现出内径范围从0.6到0.8 nm内的封装。我们已经发现,在没有任何还原剂的情况下,这些单独的原子链在管的中空核内自发地形成。我们相信,这些原子尺度的纳米线现在可以在不遭受氧化的情况下进行研究,从而阐明它们的物理和化学性质。
One of the main challenges in nanoscience and nanotechnology consists in the production and isolation of metallic atomic-scale nanowires (Benzryadin, C. N.; Lau, A.; Tinkham, M. Q. Nature 2000, 404, 971-974; Zach, M. P.; Ng, K. H.; Penner, R. M. Science 2000, 290, 2120-2123; Nilius, N.; Wallis, T. M.; Ho, W. Science 2002, 297, 1853-1856.). Here we report a unique and controllable way of isolating individual atomic molybdenum (Mo) chains by their encapsulation inside double-walled carbon nanotubes, exhibiting inner diameters ranging from 0.6 to 0.8 nm. We have found that these individual atomic chains form spontaneously within the hollow core of tubes in the absence of any reducing agent. We believe that these atomic-scale nanowires could now be studied without suffering oxidation, so that their physical and chemical properties are elucidated.