A New Reactive 1,8-Naphthalimide Derivative for Highly Selective and Sensitive Detection of Hg2+

作者：Lv, Feng; Chen, Yufen; Tang, Tengxuan; Chen, Yuhua; Xu, Dongmei^*

来源：Journal of Fluorescence, 2017, 27(4): 1285-1292.

DOI：10.1007/s10895-017-2061-y

• Fluorescent probe
• Naphthalimide
• Phenyl isothiocyanate
• Hg2+

A 1,8-naphthalimide derivative with a reactive aliphatic hydroxyl was designed and synthesized as a fluorescent probe. Its structure was characterized by IR, H-1 NMR, C-13 NMR, LC-MS and HPLC. The probe showed high selectivity and sensitivity to Hg2+ over other metal ions such as Pb2+, Na+, K+, Cd2+, Cr3+, Zn2+, Cu2+, Ni2+, Ca2+, Fe3+, Fe2+, Co2+, Mn2+ and Mg2+ in MeCN/H2O (15/85, v/v). The increase in fluorescence intensity was linearly proportional to the concentration of Hg2+ in the range of 18-40 mu M with a detection limit of 1.38 x 10(-7) mol/L. The probe could work in a pH span of 4.3-9.0 and respond to Hg2+ quickly with strong anti-interference ability. Job's plot suggested a 1:2 complex of the probe and Hg2+.

• 出版日期2017-7
• 单位苏州大学