A novel rhodamine-based fluorescent probe for selective detection of ClO– and its application in living cell imaging

2018 ◽  
Vol 96 (12) ◽  
pp. 1129-1133
Author(s):  
Changping Yang ◽  
Mingliang Zuo ◽  
Xiaoli Hu ◽  
Xuelin Chen ◽  
Duoduo Zhang ◽  
...  

A novel fluorescent rhodamine-based probe L for selective responding to ClO– has been synthesized and characterized. The spectroscopy showed that probe L can detect ClO– in aqueous solution without interaction with other interfering ions, and the detection is also evident by the colour change from colourless to reddish purple under white light. The remarkable fluorescence enhancement showed the high selectivity and sensitivity of probe L for the detection of ClO–. Furthermore, probe L was applied to intracellular fluorescent imaging of HeLa cells treated with ClO– and MTT assay showed nontoxicity in living cells.

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4718
Author(s):  
Xiang Rong ◽  
Zhong-Yong Xu ◽  
Jin-Wu Yan ◽  
Zhi-Zhong Meng ◽  
Bin Zhu ◽  
...  

A new colorimetric and fluorescence probe NRSH based on Nile-red chromophore for the detection of biothiols has been developed, exhibiting high selectivity towards biothiols over other interfering species. NRSH shows a blue shift in absorption peak upon reacting with biothiols, from 587 nm to 567 nm, which induces an obvious color change from blue to pink and exhibits a 35-fold fluorescence enhancement at 645 nm in red emission range. NRSH displays rapid (<1 min) response for H2S, which is faster than other biothiols (>5 min). The detection limits of probe NRSH towards biothiols are very low (22.05 nM for H2S, 34.04 nM for Cys, 107.28 nM for GSH and 113.65 nM for Hcy). Furthermore, NRSH is low cytotoxic and can be successfully applied as a bioimaging tool for real-time monitoring biothiols in HeLa cells. In addition, fluorescence mechanism of probe NRSH is further understood by theoretical calculations.


RSC Advances ◽  
2014 ◽  
Vol 4 (86) ◽  
pp. 45791-45796 ◽  
Author(s):  
Ying-Ying Zhu ◽  
Xuan Zhang ◽  
Hua Guo ◽  
Zhi-Jia Zhu

A new rhodamine-derived fluorescent chemodosimeter for imaging of Cu2+in living cells was developed under a coordination-promoted hydrolysis mechanism.


2013 ◽  
Vol 295-298 ◽  
pp. 475-478 ◽  
Author(s):  
Zhi Xiang Han ◽  
Ming Hui Du ◽  
Guo Xi Liang ◽  
Xiang Yang Wu

Rhodamine B thiohydrazide (RBS) was firstly employed as turn-on fluorescent probe for hypochlorite in aqueous solution and living cells. It exhibits a stable response to hypochlorite from 1.0×10-6to 1.0×10-5M with a detection limit of 3.3×10-7M. The response of this probe to hypochlorite is fast and highly selective compared with other reactive oxygen species (such as.OH,1O2, H2O2) and other common anions (such as X-, ClO2-, ClO4-, NO3-, NO2-, OH-, Ac-, CO32-, SO42-).


RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40615-40620 ◽  
Author(s):  
Kui Du ◽  
Shizhen Niu ◽  
Li Qiao ◽  
Yandong Dou ◽  
Qing Zhu ◽  
...  

A simple ratiometric sensor (L1) for the cascade detection of Zn2+ and H2PO4− with high selectivity was reported based on the intermolecular charge transfer (ICT) mechanism.


2019 ◽  
Vol 7 (5) ◽  
pp. 809-814 ◽  
Author(s):  
Yong Zhou ◽  
Li Zhang ◽  
Xuan Zhang ◽  
Zhi-Jia Zhu

A novel NIR ratiometric fluorescent probe HBT-GSH was developed for the selective detection of GSH over Cys and Hcy in aqueous solution. The signaling mechanism of the GSH-induced removal of an acetyl group and the switching on of ICT fluorescence was proposed.


2020 ◽  
pp. 174751982097392
Author(s):  
Qihua You ◽  
Yihua Zhuo ◽  
Yadong Feng ◽  
Yujuan Xiao ◽  
Yanyu Zhang ◽  
...  

A highly selective OFF–ON fluorescent probe is developed for the sensing of Cu2+ based on the hydrolysis of a quinoline-2-carboxylate moiety. The probe is weakly fluorescent due to esterification of the phenolic group. Upon treatment with 1 equiv. of Cu2+, the probe exhibits strong fluorescence at 570 nm. The probe also exhibits high selectivity for Cu2+ over other cations with a low detection limit of 0.2 μM, which is sensitive enough to meet the standard of the World Health Organization for Cu2+ in drinking water (30 μM). Moreover, the probe shows a very low cell cytotoxicity, and imaging experiments demonstrate that the probe can be used for the sensing of Cu2+ in living cells.


2019 ◽  
Vol 11 (25) ◽  
pp. 3150-3154 ◽  
Author(s):  
Daying Liu ◽  
Hualing Zhu ◽  
Jun Shi ◽  
Xinxin Deng ◽  
Tingting Zhang ◽  
...  

A new 4-amino-1,8-naphthalimide-based fluorescent sensor, with iminodiacetic acid and picolinic acid as receptors, was developed and applied successfully to detect Hg2+ in aqueous solution and living cells.


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