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Abstract:
In this work, we rationally design a new type of squaraine dye SQ, modified with the dicyanovinyl motif that can specifically detect DQ (Diquat) by virtue of aggregation-disaggregation mechanism and electrostatic interaction between DQ and SQ. It undergoes H-aggregation in aqueous solution, resulting in fluorescence quenching. After the addition of DQ, the dicyanovinyl group on the probe reacts with DQ to deagglomerate so that the fluorescence is enhanced, tracing DQ in the environment with high sensitivity (LOD = 4.9 x 10(-7) M), selectivity and good stability. In addition, the actual sample spike recovery experiment and the confocal fluorescence imaging experiment of DQ in zebrafish also confirmed the detection method. At present, the "turn-on" type fluorescence probe for detecting DQ by using near-infrared squaraine dye has not been reported. The application of SQ provides a new strategy for the quantification of DQ.
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DYES AND PIGMENTS
ISSN: 0143-7208
Year: 2021
Volume: 191
5 . 1 2 2
JCR@2021
4 . 1 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:117
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 10
SCOPUS Cited Count: 10
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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