Dye-concentrated organically modified silica nanoparticles as a ratiometric fluorescent pH probe by one- and two-photon excitation

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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Bibliographische Detailangaben
Veröffentlicht in:	Chemical communications (Cambridge, England) England), 2006-01 (19), p.2071-2073
Hauptverfasser:	Kim, Sehoon, Pudavar, Haridas E, Prasad, Paras N
Format:	Artikel
Sprache:	eng
Schlagworte:	Coloring Agents Fluorescence Fluorescent Dyes Hydrogen-Ion Concentration Molecular Probe Techniques Nanostructures Nanotechnology Photons Radiometry Silicon Dioxide - chemistry Spectrometry, Fluorescence
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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.
ISSN:	1359-7345 1364-548X
DOI:	10.1039/b600926c