Development of a fluorescent chelating ligand for scandium ion having a Schiff base moiety

作者：Yamada Hiroshi; Kojo Masahito; Nakahara Tomomi; Murakami Kumi; Kakima Takashi; Ichiba Hideaki; Yajima Takehiko; Fukushima Takeshi^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2012, 90: 72-77.

DOI：10.1016/j.saa.2012.01.014

• Metal-ion complex
• Ligand
• Fluorescence
• Scandium ion
• Rare earth metal
• 1-(2-Hydroxy-3-methoxybenzaldehyde)-4-aminosalicylhydrazone

A fluorescent ligand, 1-(2-hydroxy-3-methoxybenzaldehyde)-4-aminosalicylhydrazone (HMB-ASH), was newly designed and synthesized, and its fluorescence characteristics for metal ions were investigated in the pH range 3.0-10.5 (at a difference of 0.5 for each metal). %26lt;br%26gt;After testing 31 different metal ions, it was found that HMB-ASH was able to emit fluorescence intensely at 512 nm with an excitation wavelength of 353 nm in the presence of Sc3+, one of the rare earth metals, at pH values around 3.5 and 8.0. The other metal ions hardly showed fluorescence with HMB-ASH. The fluorescence was more intense at pH 8.0, and the detection limit of Sc3+ in a buffer solution (pH 8.0) was approximately 18.8 nmol L-1 (0.85 ppb).

• 出版日期2012-5