Figure 2

Decorated Peg-coated Nanoparticles. (a) Diagrammatic synthesis of TMR dye-doped, PEG-tagged silica nanoparticle (TMR-PSiNPs). The particles were separated from microemulsion by vortexing and centrifugating in acetone and ethanol, respectively. (b) ~ (c) TEM images of bare silica nanoparticles and TMR-doped PEG-coordinated silica nanoparticles (TMR-PSiNPs) with a mean diasmeter of 150 nm. (d) shows the magnified image of (c) to emphasize the presence of TMR dextran as a black dot in the silica structure. (e) Fluorescence microscopic image of TMR-PSiNPs.