A novel polymer probe for Zn(II) detection with ratiometric fluorescence signal

作者：Diao, Haipeng; Guo, Lixia; Liu, Wen; Feng, Liheng^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2018, 196: 274-280.

DOI：10.1016/j.saa.2018.02.036

• Polymer
• Zinc ion
• Ratiometric
• Fluorescence probe
• Application

A conjugated polymer probe comprised of fluorene, quinolone and benzothiazole units was designed and synthesized by the Suzuki coupling reaction. Through the studies of photophysical and thermal properties, the polymer displays blue-emitting feature and good thermal stability. A ratiometric fluorescence signal of the probe for Zn(II) was observed in ethanol with a new emission peak at 555 nm. The probe possesses a high selectivity and sensitivity for Zn(II) during familiar metal ions in ethanol. The detection limit of the probe for Zn (II) is up to 10(-8) mol/L. The electron distributions of the polymer before and after bonding with Zn (II) were investigated by the Gaussian 09 software, which agreed with the experimental results. Noticeably, based on the color property of the probe with Zn(II), a series of color test paper were developed for visual detecting Zn(II) ions. This work helps to provide a platform or pattern for the development of polymer fluorescence probe in the chemosensor field.

• 出版日期2018-5-5
• 单位山西医科大学; 山西大学