A new fluorescence "turn-on" type chemosensor for Fe3+ based on naphthalimide and coumarin

作者：Li, Zhengqian; Zhou, Ying; Yin, Kai; Yu, Zhu; Li, Yan; Ren, Jun^*

来源：Dyes and Pigments, 2014, 105: 7-11.

DOI：10.1016/j.dyepig.2013.12.032

• Fluorescent sensor
• Turn-on
• Chemosensor
• Ferric ion
• Naphthalimide
• Coumarin

A new Fe3+-selective "turn-on" chemosensor 1 based on coumarin and naphthalimide was designed and synthesized. The chemosensor exhibits high selectivity for Fe3+ over other ions (Mn2+, Co2+, Ni2+, Cu2+, Ag+, Cd2+, Pb2+, Ca2+, Al3+, Ba2+, Hg2+, Li+, Mg2+, Sr2+, Zn2+ and K+) with fluorescence-enhancement in THF-H2O solution. The binding ratio of 1-Fe3+ complex was determined to be 1:1 according to the Job plot. The association constant K-a of Fe3+ binding with sensor 1 was (2.589 +/- 0.206) x 10(3) M-1. The detection limit was calculated to be 0.388 mu M.

• 出版日期2014-6
• 单位湖北大学