Ratiometric fluorescent detection of Cu(II) in semi-aqueous solution using a two-fluorophore approach

✍ Scribed by Narinder Singh; Navneet Kaur; Bridgeen McCaughan; John F. Callan

• Book ID: 104097772
• Publisher: Elsevier Science
• Year: 2010
• Tongue: French
• Weight: 681 KB
• Volume: 51
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/j.tetlet.2010.04.099

✦ Synopsis

Schiff base sensor 1, containing naphthalene and naphthalimide fluorophores with separate and distinct emission wavelengths, showed good selectivity for Cu(II) over other tested physiological and environmentally important cations through changes in its fluorescence spectra in THF/H 2 O (9:1) HEPES buffered solution. By taking the ratiometric change of the emissions at 435 nm (naphthalene-Schiff base) and 510 nm (naphthalimide) good linearity was observed in the 0-10 lM range. The enhancement of the