Naked Eye Fluoride Ion Chemosensors with Anthraquinone Derivatives.

ChemInform ◽  
2007 ◽  
Vol 38 (19) ◽  
Author(s):  
Eun Jin Cho ◽  
Hyoung Min Yeo ◽  
Byung Ju Ryu ◽  
Hyun Ah Jeong ◽  
Kye Chun Nam
Keyword(s):  
Fluoride Ion ◽  
Naked Eye ◽  
Anthraquinone Derivatives

Chemical traffic light: A self-calibrating naked-eye sensor for fluoride

2019 ◽  
Vol 23 (01n02) ◽  
pp. 117-124 ◽  
Author(s):  
Alessia D’Andrea ◽  
Giuseppe Pomarico ◽  
Sara Nardis ◽  
Roberto Paolesse ◽  
Corrado Di Natale ◽  
...  
Keyword(s):  
Low Cost ◽  
Aqueous Media ◽  
Smartphone Application ◽  
Fluoride Content ◽  
Color Variation ◽  
Fluoride Ion ◽  
Traffic Light ◽  
Naked Eye ◽  
Sensing Platform ◽  
Guideline Value

We report a low-cost sensing platform for effective naked-eye detection of fluoride ion in aqueous media. The sensor is based on silicon complex of 5,10,15-tritolylcorrole (SiTTCorr) deposited on paper support and designed in a particular way that permits it to perform in a unique sensing event an internal sensor self-calibration and subsequent analysis of fluoride ion in a concentration range from 20 [Formula: see text]g/L to 200 mg/L with a LOD 9 [Formula: see text]g/L, much lower than the WHO guideline value of 1.5 mg/L for fluoride in drinking water. The influence of tetradodecylammonium chloride (TDACl) anion exchanger addition to the performance of SiTTCorr-based sensors was studied and the sensor with optimal ionophore: exchanger [Formula: see text] 2:1 ratio demonstrated the highest sensitivity. The evident color variation of SiTTCorr-based optode from dark pink to intense green occurred upon addition of increasing concentrations of fluoride. A smartphone application equipped with home-written color intensity analysis software as a detector of developed sensor output permitted fluoride content quantification in bottled water and toothpaste samples. Moreover, since at the quantification step the SiTTCorr color variation was significant for the red component of visible light and increase of fluoride content evidently changed this color from red to yellow and then to green, the developed optode was compared to a kind of chemical traffic light, able to detect the presence of fluoride in permitted, borderline or dangerous concentrations, respectively.

A naked-eye, selective and sensitive chemosensor for fluoride ion

2010 ◽  
Vol 64 (6) ◽  
Author(s):  
Puhui Xie ◽  
Fengqi Guo ◽  
Weifeng Wang ◽  
Xiyang Liu
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Fluorescence Spectra ◽  
Color Change ◽  
Fluoride Ion ◽  
Absorption And Fluorescence Spectra ◽  
Strong Fluorescence ◽  
Naked Eye ◽  
Acridine Yellow ◽  
Intermolecular Charge Transfer

AbstractEffect of the addition of six different anions on the absorption and fluorescence spectra of acridine yellow G (AYG) was examined. Only the F− anion could induce a visible color change observable with naked eye and a strong fluorescence quenching with K SV of 8.3 × 104 mol−1 L in CH3CN solutions. Calculated results of the interaction between the F− anion and acridine yellow G using the B3LYP/6-31G(d) program showed that the intermolecular charge transfer through the formation of an H-bond between AYG and F− is an essential sensor mechanism.

Rationally designed tri-armed imidazole–indole hybrids as naked eye receptors for fluoride ion sensing

2017 ◽  
Vol 47 (14) ◽  
pp. 1307-1318 ◽  
Author(s):  
Anshu Jain ◽  
Ragini Gupta ◽  
Madhu Agarwal
Keyword(s):  
Fluoride Ion ◽  
Naked Eye ◽  
Ion Sensing

scholarly journals Unusual redshift due to selective hydrogen bonding between F− ion and sensor motif: a naked eye colorimetric sensor for F− ions in an aqueous environment

2020 ◽  
Vol 1 (7) ◽  
pp. 2346-2356
Author(s):  
Jyotirlata Singha ◽  
Tapendu Samanta ◽  
Raja Shunmugam
Keyword(s):  
Hydrogen Bonding ◽  
Colorimetric Sensor ◽  
Fluoride Ion ◽  
Aqueous Environment ◽  
Hydrazine Derivative ◽  
Naked Eye

Naked-eye sensing of fluoride ion using 2,4-dinitrophenyl hydrazine derivative.

A highly selective naked-eye and fluorescent probe for fluoride ion based on 1,8-naphalimide and benzothizazole

2017 ◽  
Vol 141 ◽  
pp. 299-305 ◽  
Author(s):  
Xiaoxing Chen ◽  
Taohua Leng ◽  
Chengyun Wang ◽  
Yongjia Shen ◽  
Weihong Zhu
Keyword(s):  
Fluorescent Probe ◽  
Fluoride Ion ◽  
Naked Eye

A selective ratiometric fluoride ion sensor with a (2,4-dinitrophenyl)hydrazine derivative of bis(indolyl) methane and its mode of interaction

2015 ◽  
Vol 39 (8) ◽  
pp. 5984-5990 ◽  
Author(s):  
Rupa Pegu ◽  
Rajesh Mandal ◽  
Ankur Kanti Guha ◽  
Sanjay Pratihar
Keyword(s):  
Fluoride Ion ◽  
Eye Detection ◽  
Hydrazine Derivative ◽  
Ion Sensor ◽  
Naked Eye ◽  
Naked Eye Detection

An easy-to-synthesis chemosensor was synthesized and employed as a selective optical chemosensor for fluoride through naked eye detection, which allow us to detect and estimate the concentration of fluoride ion accurately up to 2 μM via ratiometric responses.

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