Details

Autor(en) / Beteiligte

• Al-Ghamdi, Haifa S.
• Mahmoud, Waleed E.

Titel

Synthesis of self-assembly plasmonic silver nanoparticles with tunable luminescence color

Ist Teil von

• Journal of luminescence, 2014-01, Vol.145, p.880-883

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Assembly is an elegant and effective bottom-up approach to prepare arrays of nanoparticles from nobel metals. Noble metal nanoparticles are perfect building blocks because they can be prepared with an adequate functionalization to allow their assembly and with controlled sizes. Herein, we report a novel recipe for the synthesis of self-assembled silver nanoparticles with tunable optical properties and sizes. The synthetic route followed here based on the covalent binding among silver nanoparticles by means of poly vinyl alcohol for the first time. The size of silver nanoparticle is governed by varying the amount of sodium borohydride. The as-synthesized nanoparticles were characterized by transmission electron microscopy, x-ray diffraction, energy dispersive x-ray spectroscopy, selected area electron diffraction and UV–vis spectroscopy. Results depicted that self-assembly of mono-dispersed silver nanoparticles with different sizes have been achieved. The silver nanostructure has a single crystalline faced centered cubic structure with growth orientation along (111) facet. These nanoparticles exhibited localized surface plasmon resonance at 403nm. The luminescence peaks were red-sifted from violet to green due to the increase of the particle sizes. •Self-assembled silver nanoparticles based PVA were synthesized.•NaBH4 amount was found particle size dependent.•Silver nanoparticles strongly affected the surface plasmon resonance.•Highly symmetric luminescence emission band narrow width is obtained.•Dark field image showed a tunable color change from violet to green.