Results 211 to 220 of about 24,311 (260)
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Visible Colorimetric Fluoride Ion Sensors
Organic Letters, 2005[structure: see text] Five new urea derivative naphthalene compounds were synthesized by a reaction of 1,8-diaminonaphthalene and the corresponding isocyanates and showed a distinct color change only when treated with fluoride ions.
Eun Jin, Cho +3 more
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A colorimetric sensor array for odour visualization
Nature, 2000Array-based vapour-sensing devices are used to detect and differentiate between chemically diverse analytes. These systems--based on cross-responsive sensor elements--aim to mimic the mammalian olfactory system by producing composite responses unique to each odorant.
N A, Rakow, K S, Suslick
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Novel colorimetric sensor for oral malodour
Analytica Chimica Acta, 2010Volatile sulphur compounds are the primary constituents of oral malodour. Quantitative tools for the detection of oral malodour are beneficial to evaluate the intensity of malodour, analyse its causes and monitor the effectiveness of customized treatments.
Nethaji, Alagirisamy +2 more
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Nanomolar colorimetric hypochlorite sensor in water
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019Hypochlorous acid is present in several biological systems and plays a pivotal role in bioprocesses. The acid also finds application in industrial and synthetic spheres. The ecological toxicity of elevated hypochlorite concentrations in aqueous media has been thoroughly documented.
Sanay, Naha +2 more
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A bidentate borane as colorimetric fluoride ion sensor
Chem. Commun., 2004The bright yellow bidentate diborane (3), obtained by reaction of 10-bromo-9-thia-10-boraanthracene (1) with dimesityl-1,8-naphthalenediylborate (2), serves as a colorimetric anion sensor and selectively complexes fluoride with an association constant greater than 5 × 109 M−1 in THF.
Stephané, Solé, François P, Gabbaï
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Colorimetric metal ion sensors
Tetrahedron, 2011Colorimetric sensors allow on site, real time qualitative, and semi-quantitative detection without complicated analytical instruments. Various aspects, such as different color changes, metal induced absorptions shifts, are reviewed.
Navneet Kaur, Subodh Kumar
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Colorimetric and Fluorometric Sensor Arrays
2021The design and construction of colorimetric/fluorometric sensor arrays with high selectivity and sensitivity has been of considerable attention as an emerging technology for mobile chemical detection. Nowadays, many approaches have been made to design sensors, fabricate arrays and generalize their usage areas especially in daily life applications and ...
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An ultra-sensitive colorimetric sensor based on smartphone for pyrophosphate determination
Sensors and Actuators B: Chemical, 2021Aiguo Wu, Xuehua Ma
exaly