Results 11 to 20 of about 2,700,521 (330)

Inline NMR via a Dedicated V-Shaped Sensor

open access: yesSensors, 2023
Process monitoring and control require dedicated and reliable measures which reflect the status of the process under investigation. Although nuclear magnetic resonance is known to be a versatile analytical technique, it is only seldomly found in process ...
Eric Schmid   +4 more
doaj   +5 more sources

Real samples sensitive dopamine sensor based on poly 1,3-benzothiazol-2-yl((4-carboxlicphenyl)hydrazono)acetonitrile on a glassy carbon electrode

open access: yesScientific Reports
Herein, a novel electrochemical sensor that was used for the first time for sensitive and selective detection of dopamine (DA) was fabricated. The new sensor is based on the decoration of the glassy carbon electrode surface (GC) with a polymer film of 1 ...
Hesham M. Alsoghier   +4 more
doaj   +2 more sources

Surface NMR Using Quantum Sensors in Diamond [PDF]

open access: yesProceedings of the National Academy of Sciences, 2021
Characterization of the molecular properties of surfaces under ambient or chemically reactive conditions isa fundamental scientific challenge. Moreover, many traditional analytical techniques used for probing surfaces often lack dynamic or molecular selectivity, which limits their applicability for mechanistic and kinetic studies under realistic ...
Kristina S. Liu   +7 more
openaire   +7 more sources

Synthesis, Crystal Structure and Optical Properties of 3,5-Dihydroxyphenyl-5-(dimethylamino)naphthalene-1-sulfonate as a Fluorescence Sensor for Fluoride Ion Detection

open access: yesCrystals, 2022
3,5-Dihydroxyphenyl-5-(dimethylamino)naphthalene-1-sulfonate, also referred to as sensor R1, was synthesized and characterized by 1H- and 13C-NMR, IR, HRMS, and single-crystal X-ray diffraction.
Siraprapa Khunarj   +6 more
doaj   +1 more source

Fast-field-cycling ultralow-field nuclear magnetic relaxation dispersion

open access: yesNature Communications, 2021
Nuclear spin polarization and relaxation can be studied using nuclear magnetic resonance (NMR). Here the authors demonstrate a combination of fast-field cycling and optical magnetometry techniques, to realize a NMR sensor that operates in the region of ...
Sven Bodenstedt   +2 more
doaj   +1 more source

Synthesis, Crystal Structure and Optical Properties of 2-(3-(Hexyloxy)-5-Methylphenoxy)-N-(4-Nitrophenyl)acetamide for Anion Detection

open access: yesCrystals, 2021
In this study, 2-(3-(hexyloxy)-5-methylphenoxy)-N-(4-nitrophenyl)acetamide (sensor L1) was synthesized and characterized by FT–IR, ESI–MS, 1H and 13C NMR spectroscopy, elemental analysis, and single crystal X-ray techniques.
Piangkwan Jansukra   +4 more
doaj   +1 more source

Sensitive NMR Sensors Detect Antibodies to Influenza [PDF]

open access: yesAngewandte Chemie International Edition, 2008
Point of care (POC) sensors for the determination of immune status are an important part of the preparation for possible pandemics such as that created by avian influenza.[1,2] NMR based magnetic relaxation switches (MRSw's) are attractive for this application because they are indifferent to light and involve no immobilization of materials on vessel ...
Koh, Isaac   +3 more
openaire   +4 more sources

Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing

open access: yesMagnetochemistry, 2018
Detailed Nuclear Magnetic Resonance (NMR) spectroscopy investigations on a novel naphthalene-substituted 1,2,3-triazole-based fluorescence sensor provided evidence for the “turn-on” detection of anions.
Karelle Aiken   +9 more
doaj   +1 more source

Resolving single molecule structures with Nitrogen-vacancy centers in diamond. [PDF]

open access: yes, 2015
We present theoretical proposals for two-dimensional nuclear magnetic resonance spectroscopy protocols based on Nitrogen-vacancy (NV) centers in diamond that are strongly coupled to the target nuclei.
Cai, J, Kost, M, Plenio, MB
core   +1 more source

Highly Sensitive Water Detection Through Reversible Fluorescence Changes in a syn-Bimane Based Boronic Acid Derivative

open access: yesFrontiers in Chemistry, 2022
Reported herein is a fluorometric and colorimetric sensor for the presence of trace amounts of water in organic solvents, using syn-bimane based boronate ester 1. This sensor responds to the presence of water with a highly sensitive turn-off fluorescence
Apurba Pramanik   +3 more
doaj   +1 more source

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