Naked Eye, Ratiometric Absorption, and Ratiometric Fluorescence for Lead-Ion Analysis with a Triplex-Signal Chemosensor

2018 ◽  
Vol 2018 (18) ◽  
pp. 1877-1881 ◽  
Author(s):  
Pan Ma ◽  
Yucheng Wang ◽  
Qun Qi ◽  
Xiaoru Dong ◽  
Peihua Zhu ◽  
...  
Keyword(s):  
Lead Ion ◽  
Ratiometric Fluorescence ◽  
Naked Eye ◽  
Ion Analysis

Naked-eye and ratiometric fluorescence probe for fast and sensitive detection of hydrogen sulfide and its application in bioimaging

2018 ◽  
Vol 42 (23) ◽  
pp. 19272-19278 ◽  
Author(s):  
Jianlong Ma ◽  
Feifei Li ◽  
Qiang Li ◽  
Yijing Li ◽  
Chaoxian Yan ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Hela Cells ◽  
Fluorescence Probe ◽  
Sensitive Detection ◽  
Ratiometric Fluorescence ◽  
Naked Eye

A sensitive and ultrafast ratiometric fluorescence probe for the detection of hydrogen sulfide (H2S) in HeLa cells and zebrafish.

Visualizing telomerase activity for tumour identification by hybridization-triggered ratiometric fluorescence

2019 ◽  
Vol 55 (14) ◽  
pp. 2035-2038 ◽  
Author(s):  
Manli Zheng ◽  
Ruilong Zhang ◽  
Xiaohe Tian ◽  
Zhengjie Liu ◽  
Zhongping Zhang
Keyword(s):  
Telomerase Activity ◽  
Ratiometric Fluorescence ◽  
Naked Eye

We developed a ratiometric fluorescence strategy for visualising telomerase activity to aid tumour identification by the naked eye.

Boric acid functionalized ratiometric fluorescence probe for sensitive and on-site naked eye determination of dopamine based on two different kinds of quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72715-72721 ◽  
Author(s):  
Yeqing Xu ◽  
Xiao Wei ◽  
Hongji Li ◽  
Xudong Zheng ◽  
Kai Lu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Probe ◽  
Carbon Quantum Dots ◽  
Eye Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Naked Eye ◽  
Aminophenylboronic Acid ◽  
Naked Eye Detection

A simple dual-emission probe based on 3-aminophenylboronic acid functionalized CdTe quantum dots (QDs) and carbon quantum dots (CQDs) was developed for the on-site naked eye detection of dopamine (DA).

scholarly journals Fluorescence and Naked-Eye Detection of Pb2+ in Drinking Water Using a Low-Cost Ionophore Based Sensing Scheme

2018 ◽  
Author(s):  
Aron Hakonen ◽  
Niklas Strömberg
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Low Cost ◽  
Consumer Products ◽  
Lead Ion ◽  
Eye Detection ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

Drinking water contamination of lead from various environmental sources, leaching consumer products and intrinsic water-pipe infrastructure is still today a matter of great concern. Therefore, new highly sensitive and convenient Pb2+ measurement schemes are necessary, especially for in-situ measurements at a low-cost. Within this work dye/ionophore/Pb2+ co-extraction and effective water phase de-colorization was utilized for highly sensitive lead measurements and sub-ppb naked-eye detection. A low-cost ionophore Benzo-18-Crown-6-ether was used, and a simple test-tube mix and separate procedure was developed. Instrumental detection limits were in the low ppt region (LOD=3, LOQ=10), and naked-eye detection was 500 ppt. Note, however, that this sensing scheme still has improvement potential as concentrations of fluorophore and ionophore were not optimized. Artificial tap-water samples, leached by a standardized method, demonstrated drinking water application. Implications for this method are convenient in-situ lead ion measurements.

Colorimetric strips for visual lead ion recognition utilizing polydiacetylene embedded nanofibers

2014 ◽  
Vol 2 (43) ◽  
pp. 18304-18312 ◽  
Author(s):  
Yan Li ◽  
Lihuan Wang ◽  
Xia Yin ◽  
Bin Ding ◽  
Gang Sun ◽  
...  
Keyword(s):  
Solid Phase ◽  
Lead Ion ◽  
Ion Recognition ◽  
Naked Eye ◽  
Eye Recognition

A portable, sensitive and selective colorimetric strip for naked-eye recognition of Pb2+utilizing solid-phase polydiacetylene embedded electrospun polyacrylonitrile nanofibers.

Metal-Enhanced Ratiometric Fluorescence/Naked Eye Bimodal Biosensor for Lead Ions Analysis with Bifunctional Nanocomposite Probes

2017 ◽  
Vol 89 (6) ◽  
pp. 3597-3605 ◽  
Author(s):  
Linlin Liang ◽  
Feifei Lan ◽  
Shenguang Ge ◽  
Jinghua Yu ◽  
Na Ren ◽  
...  
Keyword(s):  
Lead Ions ◽  
Ratiometric Fluorescence ◽  
Naked Eye

Dual-emission ratiometric fluorescence detection of aspirin in human saliva: onsite naked-eye detection and high stability

2017 ◽  
Vol 41 (23) ◽  
pp. 14551-14556 ◽  
Author(s):  
Li Chen ◽  
Lin Sun ◽  
Jiahong Zheng ◽  
Jiangdong Dai ◽  
Yilin Wu ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
High Stability ◽  
Visual Detection ◽  
Fluorescence Probe ◽  
Human Saliva ◽  
Eye Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Naked Eye ◽  
Naked Eye Detection

A highly stable ratiometric fluorescence probe based on dual-emission QDs was designed for the visual detection of aspirin in human saliva.

A naked-eye and ratiometric near-infrared probe for palladium via modulation of a π-conjugated system of cyanines

2014 ◽  
Vol 50 (88) ◽  
pp. 13525-13528 ◽  
Author(s):  
Xiaohang Wang ◽  
Zhiqian Guo ◽  
Shiqin Zhu ◽  
He Tian ◽  
Weihong Zhu
Keyword(s):  
Near Infrared ◽  
Stokes Shift ◽  
Cyanine Dyes ◽  
Living Cells ◽  
Aqueous Samples ◽  
Ratiometric Fluorescence ◽  
Large Stokes Shift ◽  
Naked Eye ◽  
Fluorescence Change

The modulation of π-conjugated electrons in cyanine dyes can result in a ratiometric fluorescence change with a large Stokes shift (270 nm), especially for realizing palladium detection in aqueous samples using indicator paper and in living cells by ratiometric mode.

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