Synthesis of colloidal photonic crystals with high nonlinear optical performance: Towards efficient second-harmonic generation with centrosymmetric structures

Alberto Molinos-Gómez*, Marc Maymó, Xavier Vidal, Dolors Velasco, Jordi Martorell, Francisco López-Calahorra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

An efficient solid-phase based synthesis was presented to covalently bind a large number of molecules with high nonlinear optical (NLO) performance to the surface of colloidal crystalline arrays (CCA) nanoparticles. The nanospheres maintained a large surface charge density due to unaltered sulfate groups. The latexes are chosen with similar electrophoretic characteristics and excellent colloidal stability. The polystyrene spheres are shown to be organized in a periodic lattice or CCA. The nanocrystals formed are shown to be highly stable and the nonlinear conversion is 3 × 104 times larger. The chemically modified crystals provide high coverage of the nanosphere surface and result in more thermally stable resultant systems.

Original languageEnglish
Pages (from-to)3814-3818
Number of pages5
JournalAdvanced Materials
Volume19
Issue number22
DOIs
Publication statusPublished - 19 Nov 2007
Externally publishedYes

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