Ratiometric and colorimetric “naked eye” selective detection of CN−ions by electron deficient Ni(ii) porphyrins and their reversibility studies

2015 ◽  
Vol 44 (19) ◽  
pp. 9149-9157 ◽  
Author(s):  
Ravi Kumar ◽  
Nivedita Chaudhri ◽  
Muniappan Sankar
Keyword(s):  
Visual Detection ◽  
Selective Detection ◽  
Naked Eye

Highly electron deficient β-substituted Ni(ii) porphyrins (1–5) were synthesized and utilized as novel sensors for selective rapid visual detection of CN−ions.

An ultra-sensitive colorimetric assay for reliable visual detection of telomerase activity

The Analyst ◽  
2017 ◽  
Vol 142 (17) ◽  
pp. 3235-3240 ◽  
Author(s):  
Yaocai Wang ◽  
Luzhu Yang ◽  
Yanjun Wang ◽  
Wei Liu ◽  
Baoxin Li ◽  
...  
Keyword(s):  
Hela Cell ◽  
Visual Detection ◽  
Colorimetric Assay ◽  
Telomerase Activity ◽  
Cell Lysates ◽  
Naked Eye ◽  
Vis Spectroscopy

We proposed a sensitive colorimetric assay for detecting telomerase activity. The telomerase activity of 5 and 20 HeLa cell lysates can be detected via UV-vis spectroscopy and the naked eye, respectively.

scholarly journals Ultrafast on-site selective visual detection of TNT at sub-ppt level using fluorescent gold cluster incorporated single nanofiber

2015 ◽  
Vol 51 (26) ◽  
pp. 5590-5593 ◽  
Author(s):  
Anitha Senthamizhan ◽  
Asli Celebioglu ◽  
Tamer Uyar
Keyword(s):  
Visual Detection ◽  
Gold Cluster ◽  
Selective Detection ◽  
Site Selective

Single nanofiber embedded fluorescent gold cluster based sensor for selective detection of TNT at sub-ppt level.

A Bis-Quinoline Appended Azobenzene Based Naked Eye Sensor for Selective Detection of Cd2+ Ion

2016 ◽  
Vol 45 (6) ◽  
pp. 907-919 ◽  
Author(s):  
Elango Hrishikesan ◽  
Rangasamy Manjunath ◽  
Palaninathan Kannan
Keyword(s):  
Selective Detection ◽  
Naked Eye

Visual detection of 8-OHdG based on the aggregation of gold nanoparticles capped with the anti-8-OHdG antibody

2015 ◽  
Vol 7 (19) ◽  
pp. 8360-8365 ◽  
Author(s):  
Liping Wu ◽  
Wendan Pu ◽  
Yue Liu ◽  
Huawen Zhao ◽  
Weiqun Shu
Keyword(s):  
Gold Nanoparticles ◽  
Quantitative Determination ◽  
Rapid Method ◽  
Visual Detection ◽  
Color Change ◽  
Naked Eye ◽  
Absorption Wavelength

AuNPs, capped with anti-8-OHdG antibody, aggregate when 8-OHdG was added, resulting in color change and redshift of absorption wavelength. So a simple and rapid method to selectively determine 8-OHdG was developed and semi-quantitative determination could be achieved by the naked eye.

An ultrafast one-step assay for the visual detection of RNA virus

2018 ◽  
Vol 54 (25) ◽  
pp. 3118-3121 ◽  
Author(s):  
Cuiping Ma ◽  
Hao Jing ◽  
Pansong Zhang ◽  
Lingzhi Han ◽  
Meiling Zhang ◽  
...  
Keyword(s):  
Visual Detection ◽  
Rna Viruses ◽  
Rna Virus ◽  
Visual Method ◽  
Naked Eye ◽  
One Step

A one-step, rapid, and visual method was developed for the detection of RNA viruses and a few copies of the Zika RNA virus were directly detected within 25 min by naked-eye observation.

scholarly journals Integration of a Gold-Specific Whole E. coli Cell Sensing and Adsorption Based on BioBrick

2018 ◽  
Vol 19 (12) ◽  
pp. 3741
Author(s):  
Li Yan ◽  
Peiqing Sun ◽  
Yun Xu ◽  
Shanbo Zhang ◽  
Wei Wei ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Efficient Method ◽  
Visual Detection ◽  
Specific Binding ◽  
Selective Detection ◽  
Biological Detection ◽  
Integration System ◽  
Major Task ◽  
E Coli ◽  
Specific Binding Protein

Detection and recovery of heavy metals from environmental sources is a major task in environmental protection and governance. Based on previous research into cell-based visual detection and biological adsorption, we have developed a novel system combining these two functions by the BioBrick technique. The gold-specific sensory gol regulon was assembled on the gold-chaperone GolB (Gold-specific binding protein), which is responsible for selectively absorbing gold ions, and this led to an integration system with increased probe tolerance for gold. After being incorporated into E. coli, this system featured high-selective detection and recycling of gold ions among multi-metal ions from the environment. It serves as an efficient method for biological detection and recovery of various heavy metals. We have developed modular methods for cell-based detection and adsorption of heavy metals, and these offer a quick and convenient tool for development in this area.

Naked-eye-based selective detection of pyrophosphate with a Zn2+ complex in aqueous solution and electrospun nanofibers

RSC Advances ◽  
2015 ◽  
Vol 5 (32) ◽  
pp. 25229-25235 ◽  
Author(s):  
Zhanxian Li ◽  
Wenying Zhang ◽  
Xingjiang Liu ◽  
Chunxia Liu ◽  
Mingming Yu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Zinc Complex ◽  
Electrospun Nanofibers ◽  
Transformation Process ◽  
Selective Detection ◽  
Naked Eye

Based on keto–enol transformation process, a zinc complex as a naked-eye-based chemosensor for pyrophosphate in aqueous solution and electrospun nanofibers has been developed.

Self-assembled conjugated polymer/carboxymethyl chitosan grafted poly(p-dioxanone) nanomicelles and their use in functionalized indicator paper for fast and visual detection of a banned food dye

2014 ◽  
Vol 5 (14) ◽  
pp. 4251-4258 ◽  
Author(s):  
Hui Chen ◽  
Meiwan Chen ◽  
Xiaohui Wang ◽  
Runcang Sun
Keyword(s):  
Conjugated Polymer ◽  
Visual Detection ◽  
Aqueous Media ◽  
Carboxymethyl Chitosan ◽  
Fluorescent Nanoparticles ◽  
Selective Detection ◽  
Food Dye ◽  
Self Assembled ◽  
Polysaccharide Derivative

Fluorescent nanoparticles composed of a self-assembled polysaccharide derivative and a conjugated polymer show greatly improved sensitivity for the selective detection of a banned food dye in aqueous media.

Quantification signalling via transition of solution inhomogeneity: determination of iron content in human serum by the naked eye

2014 ◽  
Vol 6 (18) ◽  
pp. 7204-7211 ◽  
Author(s):  
Chun-Ting Kuo ◽  
Cheng-Han Lin ◽  
Yi-Ann Lii ◽  
Mong-Wen Gu ◽  
Chih-Wen Pao ◽  
...  
Keyword(s):  
Human Serum ◽  
Iron Content ◽  
Visual Detection ◽  
Naked Eye

Visual detection triggered by sensing events has been one of the central themes in contemporary chemistry.

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