Journal of Sol-Gel Science and Technology

, Volume 74, Issue 1, pp 32–38 | Cite as

Highly fluorescent sub 40-nm aminated mesoporous silica nanoparticles

  • Teeraporn Suteewong
  • Kai Ma
  • Jennifer E. Drews
  • Ulrike Werner-Zwanziger
  • Josef Zwanziger
  • Ulrich Wiesner
  • Michelle S. Bradbury
Original Paper

Abstract

We report the room temperature synthesis of highly fluorescent, sub-40 nm aminated mesoporous silica nanoparticles in water using triethanolamine (TEA) as catalyst. Co-condensation reactions between silica precursors, i.e., tetraethoxysilane and 3-aminopropyl triethoxysilane, allows the incorporation of amino moieties and conjugated fluorescent dye (tetramethylrhodamine-5(6)-isothiocyanate; TRITC) throughout the silica matrix. Resulting materials are characterized using a combination of transmission electron microscopy, nitrogen sorption measurements, dynamic light scattering, zeta potential measurements, thermogravimetric analysis, fluorescence correlation spectroscopy and solid-state 29Si-NMR spectroscopy. The TEA-catalyzed system leads to the formation of bright and discrete sub-40 nm aminated mesoporous silica nanoparticles with disordered pore structure and high organic content. Resulting nanomaterials may find use as simultaneous fluorescent probes and drug delivery vehicles in future theranostic applications.

Keywords

Mesoporous silica Fluorescent Amination 

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Teeraporn Suteewong
    • 1
    • 2
  • Kai Ma
    • 3
  • Jennifer E. Drews
    • 3
  • Ulrike Werner-Zwanziger
    • 4
  • Josef Zwanziger
    • 4
  • Ulrich Wiesner
    • 3
  • Michelle S. Bradbury
    • 1
  1. 1.Department of RadiologyMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  2. 2.Department of Chemical Engineering, Faculty of EngineeringKing Mongkut’s Institute of Technology LadkrabangBangkokThailand
  3. 3.Department of Materials Science and EngineeringCornell UniversityIthacaUSA
  4. 4.Department of ChemistryDalhousie UniversityHalifaxCanada

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