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 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.

Competitive Chloride Chemisorption Disrupts Hydrogen Bonding Networks: DFT, Crystallography, Thermodynamics, and Morphological Consequences

CORROSION ◽  
10.5006/2555 ◽  
2017 ◽  
Vol 74 (3) ◽  
pp. 295-311 ◽  
Author(s):  
Laurence Marks
Keyword(s):  
Hydrogen Bonding ◽  
Surface Science ◽  
Density Functional ◽  
Chloride Ions ◽  
Oxide Surface ◽  
Aqueous Environment ◽  
Aqueous Corrosion ◽  
Function Change ◽  
Competing Models ◽  
Galvanic Couples

The consequence for aqueous corrosion of chloride ions in an aqueous environment on the surface structure and thermodynamics of hydroxylated magnesia (001) and alpha-alumina (001) and (100) is analyzed using density functional methods. It is shown that there is competitive chemisorption between hydroxide and chloride, with the chloride disrupting the hydrogen bonding network on the surface. There is a significant crystallographic dependence, as well as dependencies upon the environment in terms of the pH and chloride molarity. An analysis of the results in terms of existing, competing models in the literature for the effect of chloride indicates that rather than the existing models being competitors, most are correct but incomplete. Rather than the different models being viewed as competitors, or each being rate determining for some specific set of conditions, the majority are simultaneously correct. Conventional oxide surface science extrapolation of the results yields qualitative conclusions for the effects of, for instance, alloy dopants which are consistent with existing experimental data. The analysis also indicates the existence of a number of new phenomena in corrosion, for instance local galvanic couples due to the work-function change with chloride chemisorption, as well as thermodynamic dewetting of the oxide film.

Fluoride-Selective Host Based on Anion–π Interactions, Ion Pairing, and Hydrogen Bonding: Synthesis and Fluoride-Ion Sandwich Complex

2007 ◽  
Vol 119 (46) ◽  
pp. 8938-8940 ◽  
Author(s):  
Mark Mascal ◽  
Ilya Yakovlev ◽  
Edward B. Nikitin ◽  
James C. Fettinger
Keyword(s):  
Hydrogen Bonding ◽  
Ion Pairing ◽  
Fluoride Ion ◽  
Sandwich Complex ◽  
Π Interactions
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