A highly sensitive and selective fluorescent turn-on chemosensor bearing a 7-diethylaminocoumarin moiety for the detection of cyanide in organic and aqueous solutions

2020 ◽  
Vol 44 (44) ◽  
pp. 19155-19165
Author(s):  
Burcu Aydıner ◽  
Ömer Şahin ◽  
Deniz Çakmaz ◽  
Gökhan Kaplan ◽  
Kerem Kaya ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Emission Intensity ◽  
High Sensitivity ◽  
Turn On ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity

Novel 7-diethylaminocoumarin based dyes showed high sensitivity and selectivity to cyanide anions in both organic and aqueous solutions, which was observed by a drastic increment in the emission intensity.

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 highly sensitive and selective “turn-on” fluorescent probe for detection of fleroxacin in human serum and urine based on a lanthanide functionalized metal–organic framework

2019 ◽  
Vol 48 (48) ◽  
pp. 17945-17952 ◽  
Author(s):  
Tian-Yu Liu ◽  
Xiang-Long Qu ◽  
Bing Yan
Keyword(s):  
Human Serum ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Luminescent Probe ◽  
Turn On ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Serum And Urine

A novel luminescent probe based on a Eu3+ functionalized MOF hybrid (Eu3+@1) with high sensitivity and selectivity has been proved to possess enormous potential for the determination of fleroxacin in human serum and urine.

A metal-organic framework featuring highly sensitive fluorescence sensing for Al3+ ion

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yang Qiao ◽  
Zeqi Li ◽  
Mei-Hui Yu ◽  
Ze Chang ◽  
Xian-He Bu
Keyword(s):  
Metal Ions ◽  
Human Health ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Fluorescence Sensing ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Organic Framework

High sensitivity and selectivity for detection of metal ions are very important to protect human health. Fluorescent metal-organic framework (MOF) as a new sensing material has attracted more and more...

A dual-emitting Tb(iii)&Yb(iii)-functionalized coordination polymer: a “turn-on” sensor for N-methylformamide in urine and a “turn-off” sensor for methylglyoxal in serum

2019 ◽  
Vol 48 (38) ◽  
pp. 14408-14417 ◽  
Author(s):  
Xubin Zheng ◽  
Ruiqing Fan ◽  
Haoyang Lu ◽  
Bowen Wang ◽  
Jingkun Wu ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Fluorescent Probe ◽  
High Sensitivity ◽  
Turn On ◽  
Postsynthetic Modification ◽  
Sensitivity And Selectivity

A fluorescent probe designed and prepared through postsynthetic modification (PSM) showed high sensitivity and selectivity for N-methylformamide (NMF) in urine and methylglyoxal (MGO) in serum.

Improved Detection of Hg2+ in Aqueous Solution with High Sensitivity and Selectivity by Using Mercury-Specific DNA, Sybr Green I and Gold Nanoparticles

2011 ◽  
Vol 239-242 ◽  
pp. 934-939
Author(s):  
Hui Xu ◽  
Shuli Gao ◽  
Jian Nong Chen ◽  
Quan Wen Liu
Keyword(s):  
Gold Nanoparticles ◽  
High Sensitivity ◽  
Sybr Green ◽  
Sybr Green I ◽  
Fluorescence Signal ◽  
Potassium Ions ◽  
Label Free ◽  
Turn On ◽  
Sensitivity And Selectivity ◽  
Fluorescence Turn On

We report a label-free, fast, fluorescence turn on assay for Hg2+detecton by using mercury-specific DNA (MSD), Sybr Green I (SG) and gold nanoparticles (AuNPs). SG efficiently discriminates MSD and MSD/Hg2+complex. The addition of gold nanoparticle decreases the background fluorescence signal further for MSD. The fluorescence intensity of MSD/Hg2+complex keeps constant after addition of AuNPs. This property improves the signal-to-background ratio and decreases the detection limitation further. In addition, the method shows improved selectivity compared with that in the absence of AuNPs. This strategy could be applied to the detection of potassium ions and showed good generality.

Pyrene appended thymine derivative for selective turn-on fluorescence sensing of uric acid in live cells

RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 66774-66778 ◽  
Author(s):  
Prithidipa Sahoo ◽  
Himadri Sekhar Sarkar ◽  
Sujoy Das ◽  
Kalipada Maiti ◽  
Md Raihan Uddin ◽  
...  
Keyword(s):  
Uric Acid ◽  
Fluorescent Probe ◽  
High Sensitivity ◽  
Living Cells ◽  
Live Cells ◽  
Fluorescence Sensing ◽  
Turn On ◽  
Sensitivity And Selectivity ◽  
First Time

A new ‘turn-ON’ fluorescent probe, pyrene appended thymine acetamide (PTA), with high sensitivity and selectivity for the detection of uric acid (UA) was developed and first time imaging of uric acid in living cells in water was achieved.

scholarly journals Highly Sensitive, Selective, Flexible and Scalable Room-Temperature NO2 Gas Sensor Based on Hollow SnO2/ZnO Nanofibers

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6475
Author(s):  
Jiahui Guo ◽  
Weiwei Li ◽  
Xuanliang Zhao ◽  
Haowen Hu ◽  
Min Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Positive Impact ◽  
High Sensitivity ◽  
Detection Sensitivity ◽  
Pure Sno2 ◽  
Flexible Devices ◽  
Low Concentrations ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity

Semiconducting metal oxides can detect low concentrations of NO2 and other toxic gases, which have been widely investigated in the field of gas sensors. However, most studies on the gas sensing properties of these materials are carried out at high temperatures. In this work, Hollow SnO2 nanofibers were successfully synthesized by electrospinning and calcination, followed by surface modification using ZnO to improve the sensitivity of the SnO2 nanofibers sensor to NO2 gas. The gas sensing behavior of SnO2/ZnO sensors was then investigated at room temperature (~20 °C). The results showed that SnO2/ZnO nanocomposites exhibited high sensitivity and selectivity to 0.5 ppm of NO2 gas with a response value of 336%, which was much higher than that of pure SnO2 (13%). In addition to the increase in the specific surface area of SnO2/ZnO-3 compared with pure SnO2, it also had a positive impact on the detection sensitivity. This increase was attributed to the heterojunction effect and the selective NO2 physisorption sensing mechanism of SnO2/ZnO nanocomposites. In addition, patterned electrodes of silver paste were printed on different flexible substrates, such as paper, polyethylene terephthalate and polydimethylsiloxane using a facile screen-printing process. Silver electrodes were integrated with SnO2/ZnO into a flexible wearable sensor array, which could detect 0.1 ppm NO2 gas after 10,000 bending cycles. The findings of this study therefore open a general approach for the fabrication of flexible devices for gas detection applications.

Nitrogen doped carbon dots: mechanism investigation and their application for label free CA125 analysis

2019 ◽  
Vol 7 (19) ◽  
pp. 3053-3058 ◽  
Author(s):  
Yuanyuan Liu ◽  
Liping Jiang ◽  
Bijun Li ◽  
Xinyue Fan ◽  
Wei Wang ◽  
...  
Keyword(s):  
Nitrogen Doping ◽  
Competitive Adsorption ◽  
High Sensitivity ◽  
Label Free ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Turn On ◽  
Sensitivity And Selectivity ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen-doped CDs (N-CDs) were firstly prepared by using pear juice as the carbon source and ethanediamine as a nitrogen doping precursor with a microwave assisted pyrolysis technique. Based on the fluorescence recovery induced by competitive adsorption and desorption, a label-free “turn on” fluorescence assay with high sensitivity and selectivity was proposed for the analysis of CA125.

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