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Ultrafast synthesis of Au(I)-dodecanethiolate nanotubes for advanced Hg(2+) sensor electrodes.

Zhang Z, Ma C, He L, Zhu S, Hao X, Xie W, Zhang W, Zhang Y - Nanoscale Res Lett (2014)

Bottom Line: In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G).According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs.Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Material Science and Engineering, Chongqing University, Chongqing 400044, People's Republic of China.

ABSTRACT
In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G). Transmission electron microscopy (TEM) images reveal that the as-prepared Au(I)NTs can be obtained in a 2-h reaction instead of a previous 24-h reaction and are uniform with a hollow structure and smooth surface by virtue of the G-G-G peptide tubular template. According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs. Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

No MeSH data available.


Related in: MedlinePlus

Schematic illustrations. Schematic illustrations of the as-prepared Au(I)-dodecanethiolate nanotubes with gly-gly-gly in 2 h.
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Figure 3: Schematic illustrations. Schematic illustrations of the as-prepared Au(I)-dodecanethiolate nanotubes with gly-gly-gly in 2 h.

Mentions: On the basis of the above observation, the possible ultrafast formation mechanism of the Au(I)-alkanethiolate nanotubes is shown in Figure 3. We conclude that 1) the hybrid of HAuCl4 and DDT can form nanotubes through self-assembly method; the reaction equation is Au3+ +3RH → Au(I)-SR + RS-SR +3H+[19], but this process requires a longer time (stirring for at least 20 h). 2) The G-G-G peptides behave like a surfactant, which can easily build into tubular structures via hydrogen bonding (‘suspended’ ligands). The ligands connect each other and serve as the soft tubular-like template to synthesize the gold-organic nanotubes. The G-G-G peptides can accelerate the formation of Au(I) nanotubes, instead of doping or intercalation in the bilayer structure.


Ultrafast synthesis of Au(I)-dodecanethiolate nanotubes for advanced Hg(2+) sensor electrodes.

Zhang Z, Ma C, He L, Zhu S, Hao X, Xie W, Zhang W, Zhang Y - Nanoscale Res Lett (2014)

Schematic illustrations. Schematic illustrations of the as-prepared Au(I)-dodecanethiolate nanotubes with gly-gly-gly in 2 h.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4226189&req=5

Figure 3: Schematic illustrations. Schematic illustrations of the as-prepared Au(I)-dodecanethiolate nanotubes with gly-gly-gly in 2 h.
Mentions: On the basis of the above observation, the possible ultrafast formation mechanism of the Au(I)-alkanethiolate nanotubes is shown in Figure 3. We conclude that 1) the hybrid of HAuCl4 and DDT can form nanotubes through self-assembly method; the reaction equation is Au3+ +3RH → Au(I)-SR + RS-SR +3H+[19], but this process requires a longer time (stirring for at least 20 h). 2) The G-G-G peptides behave like a surfactant, which can easily build into tubular structures via hydrogen bonding (‘suspended’ ligands). The ligands connect each other and serve as the soft tubular-like template to synthesize the gold-organic nanotubes. The G-G-G peptides can accelerate the formation of Au(I) nanotubes, instead of doping or intercalation in the bilayer structure.

Bottom Line: In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G).According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs.Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

View Article: PubMed Central - HTML - PubMed

Affiliation: College of Material Science and Engineering, Chongqing University, Chongqing 400044, People's Republic of China.

ABSTRACT
In this work, an ultrafast and facile method is developed to synthesize Au(I)-dodecanethiolate nanotubes (Au(I)NTs) with the assistance of glycyl-glycyl-glycine (G-G-G). Transmission electron microscopy (TEM) images reveal that the as-prepared Au(I)NTs can be obtained in a 2-h reaction instead of a previous 24-h reaction and are uniform with a hollow structure and smooth surface by virtue of the G-G-G peptide tubular template. According to structural analysis, a possible preparative mechanism is proposed that the G-G-G peptide could help to curl into tube-like morphology in alkaline situation spontaneously to accelerate the formation of Au(I)NTs. Meanwhile, PVDF-stabilized Au(I)NT-modified glassy carbon electrodes present their promising potential for Hg(2+) detection.

No MeSH data available.


Related in: MedlinePlus