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Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure.

Ruiz P, Macanás J, Muñoz M, Muraviev DN - Nanoscale Res Lett (2011)

Bottom Line: The synthesis of polymer-stabilized nanoparticles (PSNPs) can be successfully carried out using intermatrix synthesis (IMS) technique, which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles (NPs) formation stage.This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions (e.g. core-shell or core-sandwich).This article reports the results on the further development of the IMS technique.

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Affiliation: Analytical Chemistry Division, Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. Patricia.Ruiz.Nicolas@uab.cat.

ABSTRACT
The synthesis of polymer-stabilized nanoparticles (PSNPs) can be successfully carried out using intermatrix synthesis (IMS) technique, which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles (NPs) formation stage. After each metal-loading-NPs-formation cycle, the functional groups of the polymer appear to be regenerated. This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions (e.g. core-shell or core-sandwich). This article reports the results on the further development of the IMS technique. The formation of NPs has been shown to proceed by not only the metal reduction reaction (e.g. Cu0-NPs) but also by the precipitation reaction resulting in the IMS of PSNPs of metal salts (e.g. CuS-NPs).

No MeSH data available.


TEM images and EDS spectra of core shell Pt@Cu- (a, b) and core sandwich Ru@Pt@Cu-PSMNPs(c, d).
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Figure 1: TEM images and EDS spectra of core shell Pt@Cu- (a, b) and core sandwich Ru@Pt@Cu-PSMNPs(c, d).

Mentions: One of the main advantages of IMS technique is the possibility of carrying out several consecutive metal-loading-reduction-cycles using the same polymer. A single metal-reduction cycle leads to the formation of monometallic NPs. However, due to the fact that the functional groups of the polymer appear to be regenerated after each cycle (converted back into the initial ionic form), undertaking consecutive cycles with another metals will result in the formation of MNPs with different structures (e.g. bi-metallic core-shell, tri-metallic core-sandwich, etc). The results presented in Figure 1 confirm this hypothesis showing TEM images and EDS spectra of bi-metallic core-shell Pt@Cu (Figure 1a, b) and tri-metallic core-sandwich Ru@Pt@Cu-PSNPs (Figure 1c, d) obtained by carrying out two and three metal-loading-reduction cycles, respectively. The results obtained agree with those reported in the literature [25] regarding simplicity and versatility of IMS technique, which provides a wide range of possibilities for obtaining INP-based nanocomposites of tuneable compositions and structures.


Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure.

Ruiz P, Macanás J, Muñoz M, Muraviev DN - Nanoscale Res Lett (2011)

TEM images and EDS spectra of core shell Pt@Cu- (a, b) and core sandwich Ru@Pt@Cu-PSMNPs(c, d).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211432&req=5

Figure 1: TEM images and EDS spectra of core shell Pt@Cu- (a, b) and core sandwich Ru@Pt@Cu-PSMNPs(c, d).
Mentions: One of the main advantages of IMS technique is the possibility of carrying out several consecutive metal-loading-reduction-cycles using the same polymer. A single metal-reduction cycle leads to the formation of monometallic NPs. However, due to the fact that the functional groups of the polymer appear to be regenerated after each cycle (converted back into the initial ionic form), undertaking consecutive cycles with another metals will result in the formation of MNPs with different structures (e.g. bi-metallic core-shell, tri-metallic core-sandwich, etc). The results presented in Figure 1 confirm this hypothesis showing TEM images and EDS spectra of bi-metallic core-shell Pt@Cu (Figure 1a, b) and tri-metallic core-sandwich Ru@Pt@Cu-PSNPs (Figure 1c, d) obtained by carrying out two and three metal-loading-reduction cycles, respectively. The results obtained agree with those reported in the literature [25] regarding simplicity and versatility of IMS technique, which provides a wide range of possibilities for obtaining INP-based nanocomposites of tuneable compositions and structures.

Bottom Line: The synthesis of polymer-stabilized nanoparticles (PSNPs) can be successfully carried out using intermatrix synthesis (IMS) technique, which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles (NPs) formation stage.This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions (e.g. core-shell or core-sandwich).This article reports the results on the further development of the IMS technique.

View Article: PubMed Central - HTML - PubMed

Affiliation: Analytical Chemistry Division, Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. Patricia.Ruiz.Nicolas@uab.cat.

ABSTRACT
The synthesis of polymer-stabilized nanoparticles (PSNPs) can be successfully carried out using intermatrix synthesis (IMS) technique, which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles (NPs) formation stage. After each metal-loading-NPs-formation cycle, the functional groups of the polymer appear to be regenerated. This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions (e.g. core-shell or core-sandwich). This article reports the results on the further development of the IMS technique. The formation of NPs has been shown to proceed by not only the metal reduction reaction (e.g. Cu0-NPs) but also by the precipitation reaction resulting in the IMS of PSNPs of metal salts (e.g. CuS-NPs).

No MeSH data available.