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Chalcone Based Colorimetric Sensor for Anions: Experimental and TD-DFT Study
Indonesian Journal of Chemistry; Vol 16, No 1 (2016); 80-86
The interactions between sensor chalcone of 3-(4-hydroxy-3-methoxyphenyl)-1-phenyl-2-propen-1-one (1) and anions (F–, Cl–, Br–, CN–, CO32–, and SO42–) have been experimentally and TD-DFT theoretically investigated. Sensor (1) showed a nak...
PubMed
Hydrogel-incorporated Colorimetric Sensors with High Humidity Tolerance for Environmental Gases Sensing
Sens Actuators B Chem
Humidity interferes most gas sensors, especially colorimetric sensors. The conventional approaches to minimize the humidity interference in colorimetric gas sensing require using extra components, causing unwanted analytes loss, or limiting the choic...
PubMed
Enhanced Colorimetric Signal for Accurate Signal Detection in Paper-Based Biosensors
Diagnostics (Basel)
Paper-based colorimetric biosensors combine the use of paper with colorimetric signal detection. However, they usually demonstrate lower sensitivities because a signal amplification procedure has not been used. Stopping the reaction of colorimetric s...
PubMed
Colorimetric sensing for translational applications: from colorants to mechanisms
Chem Soc Rev
Colorimetric sensing offers instant reporting via visible signals. Versus labor-intensive and instrument-dependent detection methods, colorimetric sensors present advantages including short acquisition time, high throughput screening, low cost, porta...
PubMed
Mitigation of Humidity Interference in Colorimetric Sensing of Gases
ACS Sens
Colorimetric sensing technologies have been widely used for both quantitative detection of specific analyte and recognition of a large set of analytes in gas phase, ranging from environmental chemicals to biomarkers in breath. But the accuracy and re...
PubMed
A Colorimetric pH Sensor Based on Clitoria sp and Brassica sp for Monitoring of Food Spoilage Using Chromametry
Sensors (Basel)
A developed colorimetric pH sensor film based on edible materials for real-time monitoring of food freshness is described. The mixed natural dyes from edible plants Clitoria sp and Brassica sp were extracted and incorporated into ι-carrageenan film ...
PubMed
Threshold-Responsive Colorimetric Sensing System for the Continuous Monitoring of Gases
Sensors (Basel)
Colorimetric sensors are widely used because of their inherent advantages including accuracy, rapid response, ease-of-use, and low costs; however, they usually lack reusability, which precludes the continuous use of a single sensor. We have developed...
PubMed
Colorimetric Biosensors: Advancements in Nanomaterials and Cutting-Edge Detection Strategies
Biosensors (Basel)
Colorimetric-based biosensors are practical detection devices that can detect the presence and concentration of biomarkers through simple color changes. Conventional laboratory-based tests are highly sensitive but require long processing times and ex...
PubMed
Colorimetric Sensors for Chemical and Biological Sensing Applications
Sensors (Basel)
Colorimetric sensors have been widely used to detect numerous analytes due to their cost-effectiveness, high sensitivity and specificity, and clear visibility, even with the naked eye. In recent years, the emergence of advanced nanomaterials has grea...
PubMed
Effect of UV Irradiation Time and Headgroup Interactions on the Reversible Colorimetric pH Response of Polydiacetylene Assemblies
ACS Omega
[Image: see text] Polydiacetylenes are chromatic conjugated polymers formed upon the photopolymerization of self-assembled diacetylenes. They exhibit conformation-dependent colorimetric responses, usually irreversible, to external triggers. Here, we ...
PubMed
Clinical Applications of Visual Plasmonic Colorimetric Sensing
Sensors (Basel)
Colorimetric analysis has become of great importance in recent years to improve the operationalization of plasmonic-based biosensors. The unique properties of nanomaterials have enabled the development of a variety of plasmonics applications on the b...
PubMed
Nanomaterials-Based Colorimetric Immunoassays
Nanomaterials (Basel)
Colorimetric immunoassays for tumor marker detection have attracted considerable attention due to their simplicity and high efficiency. With the achievements of nanotechnology and nanoscience, nanomaterials-based colorimetric immunoassays have been d...
PubMed
Recent Advances in Colorimetric Sensors Based on Gold Nanoparticles for Pathogen Detection
Biosensors (Basel)
Infectious pathogens cause severe threats to public health due to their frightening infectivity and lethal capacity. Rapid and accurate detection of pathogens is of great significance for preventing their infection. Gold nanoparticles have drawn cons...
PubMed
Washable Colorimetric Nanofiber Nonwoven for Ammonia Gas Detection
Polymers (Basel)
The colorimetric sensor is a facile, cost-effective, and non-power-operated green energy material for gas detection. In this study, the colorimetric sensing property of a meta-aramid/dye 3 nanofiber sensor for ammonia (NH(3)) gas detection was invest...
PubMed
Chromogenic Mechanisms of Colorimetric Sensors Based on Gold Nanoparticles
Biosensors (Basel)
The colorimetric signal readout method is widely used in visualized analyses for its advantages, including visualization of test results, simple and fast operations, low detection cost and fast response time. Gold nanoparticles (Au NPs), which not on...
PubMed
Functional Electrospun Nanofibrous Hybrid Materials for Colorimetric Sensors: A Review
ACS Omega
[Image: see text] Electrospun nanofibrous hybrid materials have several advantageous characteristics, including easy preparation, high porosity, and a large specific surface area. Meanwhile, they can be more suitable for colorimetric detection in env...
PubMed
Fast Responsive, Reversible Colorimetric Nanoparticle-Hydrogel Complexes for pH Monitoring
Nanomaterials (Basel)
Hydrogels containing redox-sensitive colorimetric nanoparticles (NPs) have been used to sense ambient pH in many fields owing to their simple and fast visualization capabilities. However, real-time pH monitoring still has limitations due to its poor ...
PubMed
Fluorescent and Colorimetric Sensors Based on the Oxidation of o-Phenylenediamine
ACS Omega
[Image: see text] o-Phenylenediamine (OPD) can be readily oxidized by several types of oxidants to generate fluorescent 2,3-diaminophenazine (oxidized OPD, OPDox). The unique fluorescence response process during the oxidation of OPD provides an impor...
PubMed
Evaluation of a Commercial Colorimetric Fecal Dipstick Assay for the Detection of Helicobacter hepaticus Infections in Laboratory Mice
J Am Assoc Lab Anim Sci
Mice used in biomedical research typically are tested for the presence of Helicobacter spp., including Helicobacter hepaticus. Here we evaluated the ability of a commercially available colorimetric Helicobacter dipstick assay to detect H. hepaticus i...
PubMed
Enhancement of Colorimetric Response of Enzymatic Reactions by Thermally Evaporated Plasmonic Thin Films: Application to Glial Fibrillary Acidic Protein
Anal Methods
We report the enhancement of the colorimetric response of horseradish peroxidase (HRP) and alkaline phosphatase (AP) in bioassays by thermally evaporated silver, gold, copper and nickel thin films. In this regard, a model bioassay based on biotin-avi...
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