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.

Rhombic dodecahedral gold nanoparticles: chiral sensing probe for naked-eye recognition of histidine enantiomers

2021 ◽  
Author(s):  
Xiaoyu Shi ◽  
Guiping Zhang ◽  
Wei Liu ◽  
Yan Jin ◽  
Baoxin Li
Keyword(s):  
Gold Nanoparticles ◽  
Naked Eye ◽  
Chiral Sensing ◽  
Inherent Chirality ◽  
Eye Recognition

Rhombic dodecahedral gold nanoparticles (GNPs) are found to have inherent chirality, and can be used as colorimetric probes for naked-eyes recognition of histidine enantiomer. Our findings are helpful for developing...

Gold nanorods as colorimetric probes for naked-eye recognition of carnitine enantiomers

Gold Bulletin ◽  
2020 ◽  
Vol 53 (3-4) ◽  
pp. 159-165
Author(s):  
Yanwei Wang ◽  
Xiaojuan Zhou ◽  
Qiang Liu ◽  
Yan Jin ◽  
Chunli Xu ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Naked Eye ◽  
Eye Recognition

Benzo-15-crown-5 functionalized polydiacetylene-based colorimetric self-assembled vesicular receptors for lead ion recognition

2011 ◽  
Vol 21 (11) ◽  
pp. 3604 ◽  
Author(s):  
Xiujuan Pan ◽  
Yali Wang ◽  
Hao Jiang ◽  
Gang Zou ◽  
Qijin Zhang
Keyword(s):  
Lead Ion ◽  
Ion Recognition ◽  
Self Assembled

A rapid and naked-eye visible rhodamine 6G-based chemosensor for sensitive detection of copper(ii) ions in aqueous solution

2018 ◽  
Vol 10 (47) ◽  
pp. 5731-5737 ◽  
Author(s):  
Q. Huang ◽  
Y. T. Chen ◽  
Y. W. Ren ◽  
Z. Y. Wang ◽  
Y. X. Zhu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
High Selectivity ◽  
Rhodamine 6G ◽  
Sensitive Detection ◽  
Naked Eye ◽  
Eye Recognition

The chemosensor R6GHP showed high selectivity for Cu2+ with “naked-eye” recognition in aqueous solutions.

scholarly journals Solving an X-Ray Structure of a Bio-Artificial Neurotransmitter Receptor Designed for the Naked-Eye Recognition of Dopamine

2020 ◽  
Author(s):  
Thibaud Rossel ◽  
Bing Zhang ◽  
Raphael Gobat
Keyword(s):  
Chemical Synthesis ◽  
Small Molecules ◽  
Active Site ◽  
Chemical Sensor ◽  
Selective Detection ◽  
Neurotransmitter Receptor ◽  
X Ray ◽  
Naked Eye ◽  
Coordination Spheres ◽  
Eye Recognition

The literature is constellated with a wide variety of chemosensors against a plethora of analytes. This seminal library is used to inspire chemists to improve them using chemical synthesis. However, their optimization via chemical synthesis is a difficult task which takes time without the guarantee of final success.We show here that combinatorial chemistry,the use of first and second coordination spheres and the displacement of indicators united within a protein cavity offers an easy-to-assemble colorimetric bio-chemical sensor. It consists only of commercial chemicals. This colorimetric sensor is highly modular, cheap and evolvable. Its X-ray structure reveals the composition of its active site. This allows to design it rationally for the recognition of dopamine with the naked eye. Our bio-sensor therefore resembles a biological receptor for the recognition of neurotransmitters. Its immediate high adaptability and ability to be evolved can be useful for the selective detection of a wide variety of analytes going from small molecules to microorganisms. This discovery therefore makes it possible to dream of new biotechnological or new immunotherapeutic applications.<br>

scholarly journals Solid-phase enzyme-linked immunosorbent assay for detection of hepatitis A virus

1978 ◽  
Vol 8 (3) ◽  
pp. 277-282 ◽  
Author(s):  
S A Locarnini ◽  
S M Garland ◽  
N I Lehmann ◽  
R C Pringle ◽  
I D Gust
Keyword(s):  
Immunosorbent Assay ◽  
Hepatitis A ◽  
Hepatitis A Virus ◽  
Solid Phase ◽  
Field Work ◽  
Enzyme Linked Immunosorbent Assay ◽  
Technical Equipment ◽  
Immune Electron Microscopy ◽  
Naked Eye ◽  
Household Contacts

An enzyme-linked immunosorbent assay (ELISA) was developed for the detection of hepatitis A virus in human fecal specimens. Investigations with 88 fecal specimens from 77 patients with suspected viral hepatitis and 8 of their household contacts showed that ELISA was as specific and sensitive as radioimmunoassay and almost as sensitive as immune electron microscopy. The ELISA is quick and simple to perform, does not require sophisticated technical equipment, and can be read with the naked eye, making it suitable for field work and rapid diagnosis.

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.

scholarly journals A Long-Wavelength Fluorescent Probe for Naked Eye Recognition of HSO3-/SO32- in Aqueous Solution and Its Application

2021 ◽  
Vol 41 (6) ◽  
pp. 2417
Author(s):  
Chao Wang ◽  
Xin Wang ◽  
Keli Zhong ◽  
Shuhua Hou ◽  
Xiaomei Yan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Long Wavelength ◽  
Naked Eye ◽  
Eye Recognition
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