Articles with "colorimetric sensing" as a keyword



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Colorimetric sensing of Fe3+ ions in aqueous solution using magnesium oxide nanoparticles synthesized using green approach

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Published in 2018 at "Chemical Physics Letters"

DOI: 10.1016/j.cplett.2018.05.069

Abstract: Abstract This paper reports the colorimetric sensing of Fe3+ ions in water using magnesium oxide (MgO) nanoparticles where a novel and green method to synthesize MgO nanoparticles (NPs) using Syzygium aromaticum extract (clove extract) as… read more here.

Keywords: mgo; fe3 ions; magnesium oxide; using magnesium ... See more keywords
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Protic ionic liquids as a versatile modulator and stabilizer in regulating artificial peroxidase activity of carbon materials for glucose colorimetric sensing

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Published in 2017 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2017.08.059

Abstract: Abstract Herein, by utilizing ionic liquid, we have shown for the first time that activated carbon can be used as a cheap and recyclable peroxidase mimic in the construction of colorimetric sensors for biomedical applications.… read more here.

Keywords: peroxidase; carbon; protic ionic; liquids versatile ... See more keywords
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Green synthesis of silver nanoparticles and investigation of their colorimetric sensing and cytotoxicity effects

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Published in 2017 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2017.05.145

Abstract: Abstract The “Green” synthesis of metallic nanoparticles and investigation of their optical properties has become a useful application between nanoscience and medicine. In this work, silver nanoparticles (Ag-NPs) were successfully prepared through a facile and… read more here.

Keywords: silver nanoparticles; nanoparticles investigation; green synthesis; silver ... See more keywords
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Dicyanovinyl-substituted D-A type dithienylethenes: Synthesis, photochromism and colorimetric sensing for cyanide anion

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Published in 2019 at "Optical Materials"

DOI: 10.1016/j.optmat.2019.109235

Abstract: Abstract A series of novel dithienylethene-based colorimetric sensors 1a-1d with a typical donor-acceptor structure have been successfully developed, which exhibited solvent-dependent photochromic properties in solution, as well as high selectivity and sensitivity for the naked-eye… read more here.

Keywords: colorimetric sensing; substituted type; type dithienylethenes; cyanide anion ... See more keywords
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Highly Stable Colorimetric Sensing by Assembly of Gold Nanoparticles with SYBR Green I:from Charge Screening to Charge Neutralization.

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Published in 2019 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.9b04660

Abstract: Aggregation of plasmonic gold nanoparticles (AuNPs) have been widely used for label-free colorimetric sensing. Adding salt is a commonly used method to induce a color change, but salt-induced aggregation by charge screening is a slow… read more here.

Keywords: gold nanoparticles; chemistry; charge; charge neutralization ... See more keywords
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Microwave-Assisted Synthesis of Silver Nanoparticles for Multimode Colorimetric Sensing of Multiplex Metal Ions and Molecular Informatization Applications.

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Published in 2022 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.1c23559

Abstract: Plasmonic materials have been widely used in chemo/biosensing and biomedicine. However, little attention has been paid to the application of plasmonic materials in terms of the transition from molecular sensing to molecular informatization. Herein, we… read more here.

Keywords: molecular informatization; multimode colorimetric; informatization; colorimetric sensing ... See more keywords
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Waterproof Cellulose-Based Substrates for In-Drop Plasmonic Colorimetric Sensing of Volatiles: Application to Acid-Labile Sulfide Determination in Waters

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Published in 2022 at "ACS Sensors"

DOI: 10.1021/acssensors.1c02585

Abstract: The present work reports on the assessment of widely available waterproof cellulose-based substrates for the development of sensitive in-drop plasmonic sensing approaches. The applicability of three inexpensive substrates, namely, Whatman 1PS, polyethylene-coated filter paper, and… read more here.

Keywords: cellulose based; acid labile; based substrates; drop plasmonic ... See more keywords
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Remarkable colorimetric sensing behavior of pyrazole-based chemosensor towards Cu(II) ion detection: synthesis, characterization and theoretical investigations

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Published in 2018 at "RSC Advances"

DOI: 10.1039/c8ra02905a

Abstract: We report the synthesis of a new imine based ligand, 3-((3-methoxybenzylidene)amino)-1H-pyrazol-5-ol (HL) and its Cu(II) complexes in 2 : 1 (HL : metal) and 1 : 1 : 1 (HL : metal : HQ) stoichiometric ratio using 8-hydroxyquinoline (HQ) as an additional bidentate ligand. The synthesized ligand… read more here.

Keywords: remarkable colorimetric; behavior pyrazole; sensing behavior; ligand ... See more keywords
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Porphyrin-based colorimetric sensing of perfluorooctanoic acid as proof of concept for perfluoroalkyl substance detection.

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Published in 2021 at "Chemical communications"

DOI: 10.1039/d1cc04903h

Abstract: A functionalized porphyrin receptor was prepared to bind perfluorooctanoic acid. UV-Vis spectroscopic analysis showed the receptor gave a rapid colorimetric response that could also be detected visually at environmentally relevant concentrations. Spiked soil samples were… read more here.

Keywords: perfluorooctanoic acid; detection; based colorimetric; porphyrin based ... See more keywords
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Core-shell Au-Ag nanoparticles as colorimetric sensing probes for highly selective detection of a dopamine neurotransmitter under different pH conditions.

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Published in 2022 at "Dalton transactions"

DOI: 10.1039/d2dt02185d

Abstract: Dopamine (DA) is a vital biomarker for the early diagnosis of dopaminergic dysfunction; therefore, it is important to establish a direct and selective detection tool for DA neurotransmitters. This work reports facilely synthesized Au-Ag core-shell… read more here.

Keywords: shell nanoparticles; selective detection; sensing probes; core shell ... See more keywords
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Reversible colorimetric sensing of volatile analytes by wicking in close proximity to a photonic film

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra06740d

Abstract: Isolation of volatile analytes from environmental or biological fluids is a rate-determining step that can delay the response time for continuous sensing. In this paper, we demonstrate a colorimetric sensing system that enables the rapid… read more here.

Keywords: reversible colorimetric; sensing volatile; film; volatile analytes ... See more keywords