New method for facile synthesis of amphiphilic thiol-stabilized ruthenium nanoparticles and their redox-active ruthenium nanocomposite.
New method for facile synthesis of amphiphilic thiol-stabilized ruthenium nanoparticles and their redox-active ruthenium nanocomposite.
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DOI：
10.1021/la052332t
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发表时间：
2005-11
期刊：
影响因子：
--
通讯作者：
Takashi Tsukatani;H. Fujihara
中科院分区：
文献类型：
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作者：
Takashi Tsukatani;H. Fujihara
在四氢呋喃中，以三乙基硼氢化锂为还原剂，在正辛烷、正十八烷、1，1 '-联萘-2，2'-二硫醇或低聚乙氧硫醇存在下，对RuCl 3进行了单相还原，得到了有机溶剂和水溶性的硫醇稳定的钌纳米粒子。低聚乙氧硫醇稳定的钌纳米颗粒可溶于水和有机溶剂。钌纳米颗粒在固态下是稳定的，并且在溶液中不聚集。钌纳米颗粒的透射电子显微镜图像显示具有窄尺寸分布的小分散颗粒。十八硫醇稳定的钌纳米颗粒（2.0 nm）与吩噻嗪连接的癸硫醇的配体交换反应得到氧化还原活性的吩噻嗪官能化的钌纳米颗粒（1.9 nm），其在循环伏安图中在+0.51 V（vs Ag/0.1 M AgNO 3）处显示可逆的氧化还原峰。
The one-phase reduction of RuCl3 with lithium triethylborohydride as a reductant in tetrahydrofuran in the presence of 1-octanethiol, 1-octadecanethiol, 1,1'-binaphthalene-2,2'-dithiol, or oligoethyleneoxythiol gave organic solvent- and water-soluble thiol-stabilized ruthenium nanoparticles. The oligoethyleneoxythiol-stabilized ruthenium nanoparticles were soluble in both water and organic solvents. The ruthenium nanoparticles were stable in the solid state and did not aggregate in solution. Transmission electron microscope images of the ruthenium nanoparticles reveal small dispersed particles with a narrow size distribution. The ligand-exchange reaction of octadecanethiol-stabilized ruthenium nanoparticles (2.0 nm) with phenothiazine-linked decanethiol afforded redox-active phenothiazine-functionalized ruthenium nanoparticles (1.9 nm) that showed a reversible redox peak at +0.51 V (vs Ag/0.1 M AgNO3) in the cyclic voltammogram.