A Novel Fluorescent Probe for Lead Ions
O6; A new fluorescent probe for lead ions, p-nitrophenyl 3H-phenoxazin-3-one-7-ylphosphoric acid (NPPA), has been synthesized by linking resorufin (serving as a fluorophore andelectron acceptor) to p-nitrophenol (serving as a fluorescence quencher and electron donor)through phosphodiester bonds. Whe...
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Veröffentlicht in: | 中国化学快报(英文版) 2003-10, Vol.14 (10), p.1024-1026 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | O6; A new fluorescent probe for lead ions, p-nitrophenyl 3H-phenoxazin-3-one-7-ylphosphoric acid (NPPA), has been synthesized by linking resorufin (serving as a fluorophore andelectron acceptor) to p-nitrophenol (serving as a fluorescence quencher and electron donor)through phosphodiester bonds. When NPPA was irradiated with light, intramolecularfluorescence self-quenching took place due to the PET (photoinduced electron transfer) from thedonor to the acceptor. However, upon addition of Pb , the phosphate ester bonds in the probe werecleaved and the fiuorophore was released, accompanying the retrievement of fluorescence. |
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ISSN: | 1001-8417 |