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Updated: Aug 7, 2026

10:38
Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems
Published on: March 3, 2010
Dye-concentrated organically modified silica nanoparticles as a ratiometric fluorescent pH probe by one- and
Sehoon Kim1, Haridas E Pudavar, Paras N Prasad
1Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, State University of New York, Buffalo, New York 14260-3000, USA.
Abstract:
Basic dye-concentrated nanoparticles (approximately 33 nm in diameter) show fluorescence-based ratiometric pH response, by one- and two-photon excitations, with improved proton sensing ability (pKa approximately 6.4) through nanoscopic intraparticle energy transfer.
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