Synthesis of phosphor-free luminescent, monodisperse, mesoporous silica nanoparticles in the co-presence of double- and single-chain cationic surfactants

Haruyuki Ishii, Shunsuke Kawai, Daisuke Nagao, Mikio Konno

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Phosphor-free luminescent, mesoporous silica nanoparticles (MSNs) were synthesized with a sol-gel method in the presence of cetyltrimethylammonium bromide (CTAB) and/or didodecyldimethylammonium bromide (DDAB). The surfactants were employed to play double roles as a template to form mesopores and as an organic compound to introduce luminescent centers in calcination step. The incorporation of DDAB produced MSN that was better in luminescent properties than the CTAB-incorporated nanoparticles. A low molar ratio of CTAB to DDAB in their coexistence system could produce highly monodisperse MSN that showed emission intensity higher than that of a conventional phosphor-free luminescent silica nanoparticle having no mesopores.

Original languageEnglish
Pages (from-to)448-453
Number of pages6
JournalAdvanced Powder Technology
Volume27
Issue number2
DOIs
Publication statusPublished - 2016 Mar 1

Keywords

  • Double chain cationic surfactant
  • Monodisperse mesoporous silica nanoparticle
  • Phosphor-free luminescence
  • UV irradiation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanics of Materials

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