One-pot synthesis and surface modifications of organically modified silica (ORMOSIL) particles having multiple functional groups

Chan Yoon Jung, Jung Soo Kim, Ha Young Kim, Jung Min Ha, Yong Hyun Kim, Sang Man Koo

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Abstract

Here we report a facile one-pot synthetic method for organically modified silica (ORMOSIL) particles having multiple functional groups and demonstrate the homogeneous distribution of functional groups in ORMOSIL particles by chemical reactions of each surface functional group with fluorescent dyes such as fluroescamine and rhodamine B isothiocyanate. Dye-tagged ORMOSIL particles having tri-functional groups are exhibited two fluorescent emission peaks at 475 (blue) and 570nm (red), indicating the positions of functional groups. The surface reaction of these functionalized ORMOSIL particles with various organic or inorganic materials not only endowed additional functionalities and physical properties, but also produced metallic hybrid composite particles. Chemical and physical properties of functionalized ORMOSIL particles were characterized by FT-IR, solid state 13C and 29Si NMR, thermogravimetric analysis (TGA), electron microscopy (SEM and TEM), and X-ray diffraction (XRD) analysis.

Original languageEnglish
Pages (from-to)67-73
Number of pages7
JournalJournal of Colloid and Interface Science
Volume367
Issue number1
DOIs
Publication statusPublished - 2012 Feb 1

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Keywords

  • Dye-tagging
  • Hybrid composites
  • Organically modified silica (ORMOSIL) particles
  • Surface modification

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