A new polymer based on dipyridophenazine (dppz) moiety synthesis and sensitive chemosensor toward Cu2+ ion with high selectivity

作者：Li Hui; Zhang Shujiang; Gong Chenliang; Li Yanfeng^*; Liang Yu; Qi Zhigang; Wu Zhongying

来源：Synthetic Metals, 2014, 198: 225-229.

DOI：10.1016/j.synthmet.2014.10.025

• Dipyridophenazine
• Cu2+ chemosensor
• Fluorescent probes
• Polymer

A planar conjugated polymer (PFDPPZ) containing dipyridophenazine (dppz) groups in the main chain has been designed and synthesized which showed highly selective 'tum off' fluorescence behavior in the presence of Cu2+ ions. The selectivity of PFDPPZ toward metal ions in CHCl3/ethanol (v/v: 80/20) was investigated by UV absorption and fluorescence spectroscopy. The results showed that this chemosensor exhibited good selectivity toward Cu2+ over other metal ions, and the fluorescence of PFDPPZ could be completely quenched by Cu2+ ions at the concentration as low as 2.0 x 10(-6) mol L-1 in dilute solutions.

• 出版日期2014-12
• 单位兰州大学