Brief Communication

Journal of Nanoparticle Research

, Volume 10, Issue 7, pp 1225-1229

A version of Stöber synthesis enabling the facile prediction of silica nanospheres size for the fabrication of opal photonic crystals

  • Diego Adolfo Santamaría RazoAffiliated withMaterials Science and Chemical Engineering Department, Politecnico of Torino
  • , Luca PallavidinoAffiliated withMaterials Science and Chemical Engineering Department, Politecnico of Torino
  • , Edoardo GarroneAffiliated withMaterials Science and Chemical Engineering Department, Politecnico of Torino
  • , Francesco GeobaldoAffiliated withMaterials Science and Chemical Engineering Department, Politecnico of Torino Email author 
  • , Emiliano DescroviAffiliated withMaterials and Microsystems Laboratory χLab-Physics Department, Politecnico of Torino
  • , Angelica ChiodoniAffiliated withMaterials and Microsystems Laboratory χLab-Physics Department, Politecnico of Torino
  • , Fabrizio GiorgisAffiliated withMaterials and Microsystems Laboratory χLab-Physics Department, Politecnico of Torino Email author 

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Abstract

A sol-gel synthesis procedure based on the method proposed by Stöber et al. (J Colloid Interface Sci 26:302–315, 1968) has been adopted for the one-step preparation of mono-dispersed silica nanospheres. An excellent control of the particle diameter over a wide range is obtained by varying the amount of silicon alkoxide only, while the concentration of all other components is kept fixed: this allows the fabrication of artificial opals with a finely tuned and precisely predictable lattice parameter.

Keywords

3-D Photonic crystals Synthetic opals Bragg reflection peak Monodispersed silica nanospheres Self assembly Colloids