Preparation of highly monodisperse poly(methyl methacrylate) particles incorporating fluorescent rhodamine 6G for colloidal crystals

Daisuke Nagao, Naoto Anzai, Yoshio Kobayashi, Shunchao Gu, Mikio Konno

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Soap-free emulsion polymerization was extended to preparation of monodisperse poly(methyl methacrylate) (PMMA) particles incorporating rhodamine 6G (R6G) fluorescent molecules. The polymerization was conducted in the presence of an anionic monomer, p-styrenesulfonate (NaSS), which improved dispersion stability of the polymer particles. NaSS concentrations was ranged up to 2 mol/m3 H2O in the polymerization at 0.5 kmol/m3 H2O methyl methacrylate (MMA) monomer and 5 mol/m3 H2O potassium persulfate (KPS) initiator for R6G concentrations from 0.1 to 10 mol/m3-polymer. At R6G concentrations lower than 1.0 mol/m3-polymer, PMMA particles were highly monodisperse and incorporated most R6G molecules. The average sizes of PMMA particles were in a rage of 160-300 nm, and decreased with the concentration of NaSS. The high monodispersity of the particles enabled the fabrication of colloidal crystals of the particles with a vertical deposition method.

Original languageEnglish
Pages (from-to)232-237
Number of pages6
JournalJournal of Colloid And Interface Science
Volume298
Issue number1
DOIs
Publication statusPublished - 2006 Jun 1

Keywords

  • Anionic monomer
  • Colloidal crystal
  • Dispersion stability
  • Fluorescent
  • Monodisperse
  • PMMA
  • Polymer particle
  • Rhodamine 6G
  • Soap-free emulsion polymerization
  • Vertical deposition method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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