“Cascade recognition” of Cu²⁺ and H₂PO₄⁻ with high sensitivity and selectivity in aqueous media based on the effect of ESIPT

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• 关键词：Dual-channel determination ; Relay recognition ; Cu2+ and H2PO4&minus ; ESIPT ; INHIBIT logic gate
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：849-856
• 全文大小：3345 K
• 卷排序：242

文摘

A novel recyclable sensor Q2 for relay recognition of Cu2+ and H2PO4− in colorimetric and fluorescent response. Taking advantage of high sensitivity and selectivity response towards Cu2+ and H2PO4− over other metal ions and anions. The actual usage of sensor Q2 was further demonstrated by test kits and silica gel plates. The fluorescence changes of Q2 upon the addition of Cu2+ and H2PO4− were utilized as an INHIBIT logic gate at the molecular level.