Highly selective chemosensors with versatile recognition ability caused by minor structural change

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• 作者：Gang Liu ; Jianqing Wang ; Mingdi Yang ; Xiuzhen Zhang ; Lina Ye ; Fuying Hao ; Hongping Zhou ; Xingyou Tian ; Jieying Wu ; Yupeng Tian
• 关键词：Crown ether ; Schiff base ; Recognition abilities ; Multi-functional sensor ; Optical behaviors
• 刊名：Sensors and Actuators B: Chemical
• 出版年：1 March, 2014
• 年：2014
• 卷：192
• 期：Complete
• 页码：586-593
• 全文大小：3096 K

文摘

Two novel soluble chemosensors (L1, L2) modified by aza-crown ether groups have been synthesized by one-step facile reaction. The chemosensors were fully characterized by IR, ¹H NMR, ¹³C NMR and MS spectra. The recognition abilities of two sensors with a range of metal ions were evaluated. The results showed that L1 was a specialized sensor for Cu²⁺ and L2 was a multi-functional sensor being able to recognize Al³⁺ and Cr³⁺ via two different optical behaviors, which demonstrated the subtle structural changes of sensors can have a remarkable effect on recognizing metal ions.