Hg2+-induced self-assembly of a naphthalimide derivative by selective %26quot;turn-on%26quot; monomer/excimer emissions

作者：Wanichacheva Nantanit^*; Prapawattanapol Narupon; Lee Vannajan Sanghiran; Grudpan Kate; Petsom Amorn

来源：Journal of Luminescence, 2013, 134: 686-690.

DOI：10.1016/j.jlumin.2012.07.009

• Naphthalimide probe
• Mercury sensor
• Hg-2+-selectivity
• Excimer

A novel fluorescent sensor bearing two naphthalimide fluorophores based on 2-(3-(2-aminoethylsulfanyl)propylsulfanyl)ethanamine, 1, was readily synthesized for the recognition of Hg2+. The sensitive and selective binding behaviors of 1 were investigated by fluorescence spectroscopy. Sensor 1 selectively binds Hg2+ by exhibiting OFF-ON fluorescence enhancement behaviors of the monomer and excimer bands. The sensor provides excellent Hg2+-selectivity in the presence of high concentrations of competitive ions, particularly Cu2+ and Pb2+ as well as Na+, K+, Mn2+, Cd2+, Ni2+, Ca2+, Li+, Zn2+ and Co2+, with an available detection limit of 2.1 x 10(-7) M or 42 ppb.

• 出版日期2013-2