Results 51 to 60 of about 6,781 (224)

Inclusion Complexations of Levamisole and Cocaine With Molecular Baskets. Fluorescence Displacement Assay for Detection of Cocaine and Its Adulterant Levamisole in Aqueous Media

Chemistry – A European Journal, EarlyView.
Levamisole is a common adulterant found in street‐distributed cocaine. Molecular baskets have been shown to form stable inclusion complexes with both substances. While levamisole inserts its benzene into the basket's cavity, cocaine utilizes its bicyclic ring for encapsulation.
Christopher T. Mortensen, Carson E. Ward, Nitesh Kumar, Logan Willemann, Ryan Lutz, Kailey Hughes, Zheng Zheng, Jovica D. Badjić   +7 more
wiley   +1 more source

A Supramolecular Microfluidic Optical Chemosensor

, 2016
A supramolecular microfluidic optical chemosensor (μFOC) has been fabricated. A serpentine channel has been patterned with a sol−gel film that incorporates a cyclodextrin supramolecule modified with a Tb3+ macrocycle. Bright emission from the Tb3+ ion is
Christina M. Rudzinski (2719459), Daniel G. Nocera (1341363), Albert M. Young (2984490)   +2 more
core   +1 more source

A Novel Method for the Pre-Column Derivatization of Saccharides from Polygonatum cyrtonema Hua. by Integrating Lambert–Beer Law and Response Surface Methodology

Molecules, 2023
Traditional Chinese medicine (TCM) safety and effectiveness can be ensured by establishing a suitable quality assessment system. This work aims to develop a pre-column derivatization HPLC method for Polygonatum cyrtonema Hua. quality control.
Hui Liu, Yuanyuan Zhao, Leijing Chen, Jiao Du, Hongyan Guo, Bin Wang   +5 more
doaj   +1 more source

Synthesis of Tris(indol‐3‐yl)methanes From Indoles, CO2, and Dimethylphenylsilane With BPh3: Two‐Step Construction of π‐Conjugated Systems

Chemistry – A European Journal, EarlyView.
Tris(indol‐3‐yl)methanes were synthesized from indoles, CO2, and PhMe2SiH in the presence of BPh3 in acetonitrile at 50°C. One product, tris(4‐bromo‐1‐methylindol‐3‐yl)methane, underwent a palladium‐catalyzed cascade reaction for the formation of a novel polycyclic heteroaromatic compound, where the methine C(sp3) atom originating from CO2 was ...
Sha Li, So Saibara, Reito Yasui, Kazuto Takaishi, Natsumi Nitta, Tadashi Ema   +5 more
wiley   +1 more source

A squaraine-based near IR fluorescent chemosensor for calcium.

, 1997
A red to NIR emitting, highly Ca2+-specific fluorescent chemosensor has been synthesized. In pH 7.2 aqueous buffers, the chemosensor signals Ca2+ by a decrease in emission intensity, whereas large excess of Mg2+ ions have no effect on either the ...
Akkaya, Engin Umut, Turkyilmaz, Serhan, Akkaya, Engin U., Türkyılmaz, Serhan   +3 more
core   +1 more source

Fluorescence Behavior of Water‐Soluble Porphyrins Immobilized on LTA Zeolite and Its Chlorogenic Acid Polyphenol Sensing in Coffee Wastewater

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
During coffee bean and cherry washing, contaminants are released into water, making this process a major source of water pollution. Chlorogenic acid can be efficiently detected using hybrid zeolite–porphyrin materials by measuring fluorescence quenching, achieving detection limits lower than current regulatory thresholds.
João Otávio Donizette Malafatti, Gabriele Magna, Francesco Pizzoli, Fabrizio Caroleo, Cadia D'Ottavi, Williane da Silva Freitas, Ailton José Moreira, Elaine Cristina Paris, Luiz Henrique Capparelli Mattoso, Corrado Di Natale, Roberto Paolesse   +10 more
wiley   +1 more source

Phenanthroline-Derived Ratiometric Chemosensor for Ureas

, 2016
The syntheses of 1,10-phenanthroline fluorophore-based chemosensor 7 and its truncated analog 9 are reported. Interactions of these compounds with urea, thiourea, 1,3-dimethylurea, tetrahydropyrimidin-2(1H)-one, imidazolidin-2-one, and selected uronium ...
Adi Dahan (2493052), Emily Rozenshine-Kemelmakher (2498587), Yoni Engel (2036284), Michael Gozin (26934)   +3 more
core   +1 more source

Ketogenic diet for infantile epileptic spasms

Epilepsia Open, EarlyView.
Abstract Approximately half of all cases of Infantile Epileptic Spasms Syndrome (IESS) do not respond to vigabatrin and hormonal therapies. There is no clear consensus as to the second‐line therapy for IESS. Ketogenic diet (KD) has emerged as an effective treatment for certain drug‐resistant epilepsies and in many cases of IESS.
Morris H. Scantlebury, Anamika Choudhary, Andy Cheuk‐Him Ng, Cezar Gavrilovici   +3 more
wiley   +1 more source

A New Switchable Zr12 Oxocluster Based Large Pore Metal–Organic Framework Functionalized With Spin Crossover Complexes for Acetic Acid Colorimetric Sensing

Angewandte Chemie, Volume 138, Issue 38, 14 September 2026.
We present here (1)⊂MIP‐216(Zr), a new hybrid material composed of an FeII spin crossover complex (1) loaded in the pores of a new hydrophobic metal–organic framework (MIP‐216(Zr), that presents a high affinity toward acetic acid and acts as a highly sensitive colorimetric sensor of acetic acid vapor due to a spin state switching of the encapsulated ...
Emmelyne Cuza, Chenchen Cao, Abeer Mohtar, Mohammad Wahiduzzaman, William Shepard, Guillaume Maurin, Moises L. Pinto, Christian Serre, Antoine Tissot   +8 more
wiley   +2 more sources

Visualisation of DCP, a nerve agent mimic, in Catfish brain by a simple chemosensor

Scientific Reports, 2018
A chemosensor, 3-aminophenol-based rhodamine conjugate (ARC) has been developed for visualisation of diethylchlorophosphate (DCP), mimic of a chemical warfare agent, in Catfish brain.
Himadri Sekhar Sarkar, Ayndrila Ghosh, Sujoy Das, Pulak Kumar Maiti, Sudipta Maitra, Sukhendu Mandal, Prithidipa Sahoo   +6 more
doaj   +1 more source