Results 21 to 30 of about 5,409,859 (340)

Carboxylic-acid-passivated metal oxide nanocrystals : ligand exchange characteristics of a new binding motif [PDF]

open access: yes, 2015
Ligand exchange is central in the processing of inorganic nanocrystals (NCs) and requires understanding of surface chemistry. Studying sterically stabilized HfO2 and ZrO2 NCs using H-1 solution NMR and IR spectroscopy as well as elemental analysis, this ...
Anderson   +21 more
core   +1 more source

Loading fluorescent Ca2+ indicators into living cells [PDF]

open access: yes, 2013
Small-molecule fluorescent Ca2+ reporters are the most widely used tools in the field of Ca2+ signaling. The excellent spatial and temporal resolution afforded by fluorescent reporters has driven the understanding of Ca2+ as a messenger in many different
Bootman, Martin D.   +4 more
core   +2 more sources

New Furan Derivatives from a Mangrove-Derived Endophytic Fungus Coriolopsis sp. J5

open access: yesMolecules, 2017
Six new furan derivatives, named 5-(3-methoxy-3-oxopropyl)-furan-2-carboxylic acid (1), 1-(5-(2-hydroxypropanoyl)-furan-2-yl)-pentan-3-one (2), 2-hydroxy-1-(5-(1-hydroxypentyl)-furan-2-yl)-propan-1-one (3), 1-(5-(1,2-dihydroxypropyl)-furan-2-yl)-pentan-1-
Liang-Liang Chen   +6 more
doaj   +1 more source

Pyrimidine-4-carboxylic acid

open access: yesActa Crystallographica Section E, 2013
The crystal structure of the title compound, C5H4N2O2, is built of acid molecules located on a mirror plane. They form sheets stacked along the b-axis direction.
Katarzyna Kiegiel   +2 more
doaj   +1 more source

An Ultrasensitive Picric Acid Sensor Based on a Robust 3D Hydrogen-Bonded Organic Framework

open access: yesBiosensors, 2022
Hydrogen-bonded organic frameworks (HOFs), as a newly developed porous material, have been widely used in various fields. To date, several organic building units (OBUs) with tri-, tetra-, and hexa-carboxylic acid synthons have been applied to synthesize ...
Weiwei Jiang   +7 more
doaj   +1 more source

Corrosion protection of AA2024 sealed anodic layers using the hydrophobic properties of carboxylic acids [PDF]

open access: yes, 2009
The present study investigates the use of carboxylic acids as a post-treatment for sealed AA2024 anodised in tartaric–sulphuric acid electrolyte. Four monocarboxylic acids with different carbon chain lengths were tested ((CH3–(CH2)n–COOH with n=4, 8, 12 ...
Boisier, Grégory   +4 more
core   +1 more source

1-Aminocyclopropane-1-Carboxylic Acid Oxidase (ACO): The Enzyme That Makes the Plant Hormone Ethylene

open access: yesFrontiers in Plant Science, 2019
The volatile plant hormone ethylene regulates many plant developmental processes and stress responses. It is therefore crucial that plants can precisely control their ethylene production levels in space and time.
M. Houben, B. Van de Poel
semanticscholar   +1 more source

Synthesis and structural characterization of 6-(N-Methyl-pyridin-2-ylcarbamoyl)-pyridine-2-carboxylic acid methyl ester isomers [PDF]

open access: yes, 2017
A series of monoamide isomers have been successfully synthesised and characterised using combination of common spectroscopic techniques such Fourier Transform Infrared (FT-IR), 1H and 13C Nuclear Magnetic Resonance (NMR) and Ultraviolet-visible (UV-vis).
Maisara Abdul Kadir,   +2 more
core   +1 more source

(2S)-4-Methyl-2-(1-oxo-1H-2,3-dihydroisoindol- 2-yl)pentanoic acid. [PDF]

open access: yes, 2006
The title compound, C14H17NO3, exhibits carboxylic acid group disorder about the C—CO2 axis, with site occupancies of 0.79 (5):0.21 (5). Molecules are linked by intermolecular O—H O Ciso, C—H O Ciso and C—H (arene) interactions (iso ...
Brady, Fiona, Gallagher, John F.
core   +1 more source

Unravelling the surface chemistry of metal oxide nanocrystals, the role of acids and bases [PDF]

open access: yes, 2014
We synthesized HfO2 nanocrystals from HfCl4 using a surfactant-free solvothermal process in benzyl alcohol and found that the resulting nanocrystals could be transferred to nonpolar media using a mixture of carboxylic acids and amines.
De Keukeleere, Katrien   +5 more
core   +1 more source

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