Diao Haipeng, Guo Lixia, Liu Wen, Feng Liheng
School of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, PR China.
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2018 May 5;196:274-280. doi: 10.1016/j.saa.2018.02.036. Epub 2018 Feb 12.
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 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.
通过铃木偶联反应设计并合成了一种由芴、喹诺酮和苯并噻唑单元组成的共轭聚合物探针。通过对光物理和热性能的研究，该聚合物呈现出蓝色发光特性和良好的热稳定性。在乙醇中观察到该探针对Zn(II)的比率荧光信号，在555nm处有一个新的发射峰。在乙醇中常见的金属离子存在下，该探针对Zn(II)具有高选择性和灵敏度。该探针对Zn(II)的检测限高达10 mol/L。利用高斯09软件研究了聚合物与Zn(II)结合前后的电子分布，结果与实验结果一致。值得注意的是，基于该探针对Zn(II)的颜色特性，开发了一系列用于可视化检测Zn(II)离子的试纸。这项工作有助于为化学传感器领域聚合物荧光探针的开发提供一个平台或模式。
