A highly selective and sensitive Fe3+ fluorescent sensor by assembling three 1,8-naphthalimide fluorophores with a tris(aminoethylamine) ligand

作者：Yang, Liang; Yang, Wen; Xu, Dongmei^*; Zhang, Zhiyuan; Liu, Aifeng

来源：Dyes and Pigments, 2013, 97(1): 168-174.

DOI：10.1016/j.dyepig.2012.12.016

• Dendrimer-type
• 1,8-Naphthalimide
• Fluorescent sensor
• Fe3+ ion
• Turn-on

A fluorescent dye with three 1,8-naphthalimide units has been readily synthesized from 1,8-naphthalic anhydride and tris(2-aminoethyl)amine. Its photophysical properties in organic solvents with different polarity have been studied and its fluorescent sensor activity to metal ions was carefully investigated. The sensor showed high selectivity to Fe3+ by fluorescence quenching in DMF, and exhibited very good selectivity and sensitivity to Fe3+ in DMF/H2O (volume ratio 4:1 and 2:3) by easily detected fluorescence enhancement. The binding stoichiometry indicated that a 1:1 complex was formed between Fe3+ and the sensor in DMF/H2O (volume ratio 2:3). The binding mechanism was studied by IR and H-1 NMR spectroscopic techniques.

• 出版日期2013-4
• 单位苏州大学