A "turn-on" fluorescence probe towards copper ions based on core-substitued naphthalene diimide

作者：Zong, Luyi; Song, Yuchen; Li, Qianqian^*; Li, Zhen^*

来源：Sensors and Actuators B: Chemical , 2016, 226: 239-244.

DOI：10.1016/j.snb.2015.11.089

• Naphthalene diimide
• Copper ions
• Fluorescence
• Turn-on

An azathiacrown ether-substituted naphthalene diimide (NDI-4) was synthesized, which was non-lumincescent, but highly emissive once binding with copper ions, exhibiting a typical "turn-on" characteristic. NDI-4 possessed a favorable selectivity towards copper ions over other relevant metal ions, such as Hg2+, Li+, Ba2+, Co2+, Ni2+, Fe2+, Ag+, Zn2+, Mg2+, Ca2+, Pb2+, Cd2+, Cr3+ and Al3+, and its detection limit was about 4.0 mu M, much lower than the maximum acceptable level of Cu2+ in drinking water (similar to 20 mu M). Furthermore, NDI-4 has been successfully applied to the detection of copper ions as "test strips" on silica gel plates.

• 出版日期2016-4
• 单位武汉大学