A New Fluorescent Probe Based on Aggregation Induced Emission for Selective and Quantitative Determination of Copper(II) and its Further Application to Cysteine Detection
A New Fluorescent Probe Based on Aggregation Induced Emission for Selective and Quantitative Determination of Copper(II) and its Further Application to Cysteine Detection
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DOI：
10.1002/slct.201702603
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发表时间：
2018-02
影响因子：
3.2
通讯作者：
Yunhui Zhao;Yueyang Luo;Han Wang;T. Guo;Hangbin Zhou;Hailong Tan;Zhihua Zhou;Yunfei Long;Zi-long Tang
中科院分区：
文献类型：
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作者：
Yunhui Zhao;Yueyang Luo;Han Wang;T. Guo;Hangbin Zhou;Hailong Tan;Zhihua Zhou;Yunfei Long;Zi-long Tang
A new fluorescent chemosensor 2,2′‐((1E,1′E)‐hydrazine‐1,2‐diylidenebis(methanylylidene))bis(4‐(1,2,2‐triphenylvinyl)phenol)TPESAAincorporated with salicylaldehyde azine motif was developed based on aggregation‐induced emission (AIE). The probeTPESAAwas prepared from 4‐hydroxy tetraphenyl ethylene which underwent formylation followed by condensation with hydrazine hydrate. It showed ratiometric fluorescence quenching behavior to Cu2+, which could induce naked‐eye color changes from colorless to pale yellow. Moreover, it displayed excellent sensitivity and selectivity toward Cu2+without interference from other metal ions. The extent of quenching is dependent on the concentration of Cu2+in the range of 0.5–7.5 μM, and a remarkable detection limit (30.9 nM) can be achieved. Furthermore, the obtained Cu2+complex could be applied to quantitative determination of cysteine in the range of 0.2–2 μM with a good linear relationship.
