A highly selective barbiturate-based fluorescent probe for detecting Hg2+ in cells and zebrafish as well as in real water samples

Author(s):  
Yan Zhang ◽  
Caiyun Liu ◽  
Meijun Su ◽  
Xiaodi Rong ◽  
Xin Wang ◽  
...  
2019 ◽  
Vol 43 (38) ◽  
pp. 15120-15125 ◽  
Author(s):  
Yaping Pan ◽  
Yang Yan ◽  
Yang Li ◽  
Xue-Wang Gao ◽  
Duobin Chao

A simple terpyridine-Zn2+ complex was developed as a turn-off fluorescent probe for detection of HClO with a rapid response of 10 seconds.


Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 247 ◽  
Author(s):  
Yawen Zhang ◽  
Aiying Ye ◽  
Yuewei Yao ◽  
Cheng Yao

Silver is a common catalyst in industrial production, and the frequent use of Ag+ can cause water pollution. Thus, the detection of Ag+ in the environment is necessary to determine the level of pollution from silver. In this work, we designed a new, highly selective near-infrared (NIR) fluorescent probe QCy to detect Ag+. The probe exhibits “turn-off” fluorescence quenching responses at 760 nm towards Ag+ over other relevant cations, with outstanding sensitivity and a low detection limit (0.03 µM), which is considerably lower than the standard of the World Health Organization (WHO) for drinking water (0.9 µM). Meanwhile, QCy showed a very good linearity at a low concentration of Ag+ with a ‘naked eye’ visible color change of solution from blue to red. The probe has been applied successfully for the detection of Ag+ in real water samples.


The Analyst ◽  
2018 ◽  
Vol 143 (18) ◽  
pp. 4354-4358 ◽  
Author(s):  
Hai Xu ◽  
Zhen Huang ◽  
Yaqian Li ◽  
Biao Gu ◽  
Zile Zhou ◽  
...  

The ‘C–CN’ bond cleavage was applied to the recognition of N2H4 for the first time; the obvious change in color could be used for “naked-eye” detection; the corresponding detection limit was found to be 5.81 × 10−8 M (1.65 ppb); the probe could be applied for N2H4 detection in real water samples.


2020 ◽  
Vol 44 (16) ◽  
pp. 6232-6237 ◽  
Author(s):  
Lei Shi ◽  
Huijuan Yu ◽  
Xianqing Zeng ◽  
Sheng Yang ◽  
Shengzhao Gong ◽  
...  

A novel ratiometric fluorescent probe based on thieno[3,2-c]coumarin has been prepared for sensing hypochlorite, which could exhibit a large emission shift and a 338-fold emission ratio (I470/I640).


2020 ◽  
Vol 154 ◽  
pp. 104587
Author(s):  
Chun Kan ◽  
Fan Song ◽  
Xiaotao Shao ◽  
Linyun Wu ◽  
Xinshuo Zhang ◽  
...  

2018 ◽  
Vol 54 (8) ◽  
pp. 888-891 ◽  
Author(s):  
Zhen Li ◽  
Yuqing Xu ◽  
Jie Fu ◽  
Hailiang Zhu ◽  
Yong Qian

A colorimetric and ratiometric probe with a push–pull chromophore dicyanoisophorone system, AuP, has been developed for the detection of Au(iii) species with highly sensitive and selective response to real-water samples and living tissues of Arabidopsis thaliana.


The Analyst ◽  
2015 ◽  
Vol 140 (8) ◽  
pp. 2778-2784 ◽  
Author(s):  
Biao Gu ◽  
Liyan Huang ◽  
Naxiu Mi ◽  
Peng Yin ◽  
Youyu Zhang ◽  
...  

A highly selective and sensitive ratiometric fluorescent probe for mercury(ii) has been developed. It has been demonstrated that the probe is able to detect Hg2+ level in water samples and living cell.


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