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Polydiacetylene-Embedded Microbeads for Colorimetric and Volumetric Sensing of Hydrocarbons
ACS Applied Materials & Interfaces, 2015Rational design of a hydrocarbon sensor that enables visual differentiation of saturated aliphatic hydrocarbons (SAHCs) is very difficult owing to the lack of useful functional groups that can interact with the sensor system. Here, we report a microbead embedded with polydiacetylene that undergoes faster swelling and faster blue-to-red color change in ...
Jaesung, Hong +5 more
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Highly sensitive and selective colorimetric sensing of antibiotics in milk
Analytica Chimica Acta, 2013Antibiotics residues in foods are very harmful to human beings. Determination of antibiotics residues relies largely on the availability of adequate analytical techniques. Currently, there is an urgent need for on site and real time detection of antibiotics in food.
Xiaofang, Zhang +5 more
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Colorimetric “Naked Eye” Sensing of Anions in Aqueous Solution
The Journal of Organic Chemistry, 2005[structure: see text] The synthesis and UV-vis and NMR spectroscopic studies of thiourea-based colorimetric sensors for anions are presented. These sensors can recognize anions through hydrogen binding even in competitive pH-buffered aqueous solutions, giving rise to large color changes that are clearly visible to the naked eye.
Thorfinnur, Gunnlaugsson +5 more
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Colorimetric and fluorescent sensing of rhodamine using polymethacrylate matrix
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019This is a description of the tracer analysis method involving colorimetric and fluorescent measurements based on solid phase extraction of rhodamine into transparent polymethacrylate matrix. Concentration of rhodamine in PMM is measured as spectrophotometric absorption level at 535 nm and fluorescence at 554 nm. The calibration graphs are linear within
N.A. Gavrilenko +4 more
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Colorimetric barbiturate sensing with hybrid spin crossover assemblies
Chem. Commun., 2014Iron-based spin crossover complexes can be used as selective, visible sensors for barbiturates in the presence of other biologically relevant hydrogen bonding species.
Michael C, Young +2 more
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Wettability gradient colorimetric sensing by amphiphilic molecular response
Chem. Commun., 2013Herein we present a highly sensitive sensing method combining amphiphilic molecules and wettability gradient photonic hydrogels for molecular recognition and chemical sensing applications. These wettability gradient photonic films exhibit low analyte amount, fast response, as well as interference resistance, which enable them for applications in ...
Wei, Hong +6 more
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A Colorimetric RGB-based Sensing Approach for Phenylalanine Detection
2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)Phenylketonuria (PKU) is an inborn metabolic disorder, one of the most spread among aminoacidemia, which requires a continuous monitoring of phenylalanine (PHE) level in order to effectively implement the requested dietary regime. Among methods to estimate PHE levels in biological fluids (such as blood and urine) interesting enzymatic-base solutions ...
Bruno Andò +6 more
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Frontiers in laccase nanozymes-enabled colorimetric sensing: A review
Analytica Chimica ActaIn recent years, nanozyme-based analytics have become popular. Among these, laccase nanozyme-based colorimetric sensors have emerged as simple and rapid colorimetric detection methods for various analytes, effectively addressing natural enzymes' stability and high-cost limitations.
Menbere Leul Mekonnen +3 more
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