A highly selective and sensitive colorimetric chemosensor for Fe2+ based on fluoran dye

作者：Wang Sheng; Gwon Seon Yeong; Kim Sung Hoon^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2010, 76(3-4): 293-296.

DOI：10.1016/j.saa.2009.12.018

• Chemosensor Fe2+ recognition
• Fluoran
• Colorimetric
• Metal cation
• Selectivity

A highly selective chemosensor based on fluoran dye for Fe2+, 2'-anilino-3'-methyl-6'-dibuthylaminoN-((2'-(2 ''-ethylimino) methyl) naphthalen-2-ol) iso-indolin-1-one-fluoran (5), was designed and synthesized. The chemical structures of all the intermediates and the fluoran dye 5 are characterized by H-1 NMR, C-13 NMR, Ms and elemental analysis. Upon addition of Fe2+, the fluoran dye 5 shows a new peak around 658 nm in its absorption spectra, and the color of solution changed from colorless to greenish black. Whereas other ions including Mg2+, Pb2+, Ni2+, Hg2+, Cd2+, Fe3+, Cu2+, Zn2+ and Al3+ and so on induced basically no spectral change, which constituted a Fe2+ highly sensitive and selective colorimetric chemosensor by "naked eyes".

• 出版日期2010-8
• 单位岭南师范学院