Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5274463 | Tetrahedron Letters | 2008 | 5 Pages |
Abstract
Gold nanoparticles modified with isothiouronium-derived amphiphile units 1 were prepared by the reduction of AuCl4-(n-C8H17)4N+ with NaBH4 in the presence of bis(5-(N-(2-(2-methoxyethoxy)ethyl)-N-methyl-S-isothiouronio)pentyl) disulfide 2. The obtained nanoparticles 1 showed a selective coloration for hydrophobic anions in water, possibly due to an anion exchange and subsequent aggregation. On the basis of this observation, the detection of Fâ in water has been achieved using 3-nitrophenylboronic acid as a mediator at pH 5.5, thereby providing a new strategy for the design of a Fâ sensory system.
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Related Topics
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Organic Chemistry
Authors
Tsuyoshi Minami, Kenji Kaneko, Takeshi Nagasaki, Yuji Kubo,