Selective deposition of a gadolinium(III) cluster in a hole opening of single-wall carbon nanohorn
Selective deposition of a gadolinium(III) cluster in a hole opening of single-wall carbon nanohorn
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DOI：
10.1073/pnas.0400596101
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发表时间：
2004-06-08
影响因子：
11.1
通讯作者：
Nakamura, E
中科院分区：
文献类型：
--
作者：
Hashimoto, A;Yorimitsu, H;Nakamura, E
由一个到多个金属原子组成的埃到纳米尺寸的颗粒的选择性合成在各种应用中是有用的，但是它受到金属原子形成大簇的趋势的阻碍。我们发现，如通过最先进的电子显微镜技术所研究的，通过将金属原子沉积在碳纳米管上或内部的亲水孔中来产生彼此隔离的含金属的纳米颗粒的策略，如通过Gd（0Ac）（3）与氧化的单壁纳米角的反应所证明的。除了沉积的金属簇的潜在效用之外，金属沉积方案提供了控制分子通过这种开口的渗透的方法。
Selective synthesis of particles of angstrom to nanometer size consisting of one to many metal atoms is instrumental in various applications, but it has been hampered by the tendency of the metal atom to form large clusters. We found, as studied by the state-of-the-art electron microscopic technique, a strategy to produce metal-containing nanoparticles isolated from each other by depositing metal atoms in a hydrophilic hole on or in the interior of a carbon nanotube as demonstrated by the reaction of Gd(OAc)(3) with oxidized single-wall nanohorns. Besides the potential utilities of the deposited metal clusters, the metal deposition protocol provides a method to control permeation of molecules through such openings.