A novel chemosensor with visible light excitability for sensing Zn2+in physiological medium and in HeLa cells

2014 ◽  
Vol 12 (27) ◽  
pp. 4975-4982 ◽  
Author(s):  
Barun Kumar Datta ◽  
Durairaj Thiyagarajan ◽  
Soham Samanta ◽  
Aiyagari Ramesh ◽  
Gopal Das
Keyword(s):  
Visible Light ◽  
Hela Cells ◽  
Turn On ◽  
Physiological Medium ◽  
Highly Sensitive

A highly sensitive, fluorescent, non-cytotoxic turn-on chemosensor with visible light excitability for the detection of intracellular Zn2+ions.

scholarly journals Development of a fused imidazo[1,2-a]pyridine based fluorescent probe for Fe3+ and Hg2+ in aqueous media and HeLa cells

RSC Advances ◽  
2019 ◽  
Vol 9 (51) ◽  
pp. 29856-29863 ◽  
Author(s):  
Suman Srivastava ◽  
Neha Thakur ◽  
Ashutosh Singh ◽  
Poonam Shukla ◽  
Vipin Kumar Maikhuri ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Hela Cells ◽  
Fluorescent Sensor ◽  
Aqueous Media ◽  
Selective Detection ◽  
Cascade Cyclization ◽  
Turn On ◽  
Highly Sensitive

A new fluorescent sensor 5 having fused imidazopyridine scaffold has been synthesized via cascade cyclization. It exhibits highly sensitive and selective detection of Fe3+ (‘turn-on’) and Hg2+ (‘turn-off’) in vitro and in HeLa cells.

A phenanthrene[9,10-d]imidazole-phenol-based fluorescent probe combined ESIPT and AIE for “turn-on” detection of Cu2+ with a green-emitting and improved stokes shift and its application

2021 ◽  
Author(s):  
Jiahui Du ◽  
Bing Zhao ◽  
Wei Kan ◽  
Haochun Yin ◽  
Tianshu Song ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Stokes Shift ◽  
Fluorescent Sensors ◽  
Turn On ◽  
Highly Sensitive

Development of highly sensitive and selective fluorescent sensors toward Cu2+ has gained considerable attention in view of its application of environmental and biological fields. However, the strategy of sensing by...

Naked-Eye Detection of Hg(II) Ions by Visible Light-Induced Polymerization Initiated by a Hg(II)-Selective Photoredox Catalyst

2021 ◽  
Author(s):  
Hyungwook Kim ◽  
Young Jae Jung ◽  
Jungkyu K. Lee
Keyword(s):  
Visible Light ◽  
Signal Amplification ◽  
Eye Detection ◽  
Naked Eye ◽  
Turn On ◽  
Novel Strategy ◽  
Amplification Strategy ◽  
Naked Eye Detection

We developed a novel strategy for signal amplification strategy using a visible light-induced photopolymerization, initiated by a selective turn-on photoredox catalyst. As photoredox catalysts, fluorescein derivatives are able to initiate...

A highly-sensitive “turn on” probe based on coumarin β-diketone for hydrazine detection in PBS and living cells

2021 ◽  
Vol 252 ◽  
pp. 119510
Author(s):  
Rui Chen ◽  
Guang-Jin Shi ◽  
Jia-Jia Wang ◽  
Hai-Feng Qin ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Living Cells ◽  
Turn On ◽  
Highly Sensitive

A Highly Sensitive and Label-Free Microbead-Based ‘Turn-On’ Colorimetric Sensor for the Detection of Mercury(II) in Urine Using a Peroxidase-Like Split G-Quadruplex–Hemin DNAzyme

2018 ◽  
Vol 71 (12) ◽  
pp. 945
Author(s):  
Xin Fu ◽  
He Zhang ◽  
Jie Zhang ◽  
Shi-Tong Wen ◽  
Xing-Cheng Deng
Keyword(s):  
Standard Deviation ◽  
Base Pair ◽  
Limit Of Detection ◽  
Label Free ◽  
Turn On ◽  
Highly Sensitive ◽  
Relative Standard ◽  
G Quadruplex ◽  
Catalytically Active ◽  
Partial Cdna

A highly sensitive and label-free microbead-based ‘turn-on’ assay was developed for the detection of Hg2+ in urine based on the Hg2+-mediated formation of intermolecular split G-quadruplex–hemin DNAzymes. In the presence of Hg2+, T–T mismatches between the two partial cDNA strands were stabilized by a T–Hg2+–T base pair, and can cause the G-rich sequences of the two oligonucleotides to associate to form a split G-quadruplex which is able to bind hemin to form the catalytically active G-quadruplex–hemin DNAzyme. This microbead-based ‘turn-on’ process allows the detection of Hg2+ in urine samples at concentrations as low as 0.5 pM. The relative standard deviation and recovery are 1.2–3.9 and 98.7–103.2%, respectively. The remarkable sensitivity for Hg2+ is mainly attributed to the enhanced mass transport ability that is inherent in homogeneous microbead-based assays. Compared with previous developments of intermolecular split G-quardruplex–hemin DNAzymes for the homogeneous detection of Hg2+ (the limit of detection was 19nM), a signal enhancement of ~1000 times is obtained when such an assay is performed on the surface of microbeads.

A highly sensitive turn-on ratiometric luminescent probe based on postsynthetic modification of Tb3+@Cu-MOF for H2S detection

2017 ◽  
Vol 5 (38) ◽  
pp. 9943-9951 ◽  
Author(s):  
Xubin Zheng ◽  
Ruiqing Fan ◽  
Yang Song ◽  
Ani Wang ◽  
Kai Xing ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Luminescent Probe ◽  
Turn On ◽  
Postsynthetic Modification ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity ◽  
H2s Detection

A novel probe, designed and prepared through PSM of Cu-MOFs and Tb3+ions, shows high sensitivity and selectivity for H2S.

A new visible-light-excitable ICT-CHEF-mediated fluorescence ‘turn-on’ probe for the selective detection of Cd2+ in a mixed aqueous system with live-cell imaging

2015 ◽  
Vol 44 (12) ◽  
pp. 5763-5770 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Krishnendu Aich ◽  
Sangita Das ◽  
Chitrangada Das Mukhopadhyay ◽  
Deblina Sarkar ◽  
...  
Keyword(s):  
Visible Light ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Aqueous System ◽  
Live Cell ◽  
Selective Detection ◽  
Turn On ◽  
Fluorescence Turn On

A new quinoline based sensor was developed and applied for the selective detection of Cd2+ both in vitro and in vivo.

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