Results 41 to 50 of about 7,069 (224)

Radical, Not Ionic: The Mechanochemical Zincke Nitration of Phenols

open access: yesAngewandte Chemie, EarlyView.
Mechanochemistry recasts the classical Zincke nitration as an open‐shell process. Liquid‐assisted vibrational milling of phenols with in situ HNO2 delivers direct and ipso nitration across 50 substrates, while atmosphere, NOx‐transfer, EPR and DFT evidence expose a phenoxyl‐radical/NO2 manifold underlying this historically ionic transformation ...
Roberto Scipione   +7 more
wiley   +2 more sources

Reversal of Photoinduced Bending of Crystals Due to Internal Refraction of Light

open access: yesApplied Sciences, 2022
The well-known effect of bending of acicular crystals undergoing photochemical reactions is associated with the transformation gradient across the crystal thickness caused by the absorption of light.
Stanislav Chizhik   +3 more
doaj   +1 more source

High purity β-Bi2O3 preparation by thermal decomposition of tartrates

open access: yesChimica Techno Acta, 2023
The processes of oxidative thermolysis of bismuth(III) DL-tartrate BiC4H3O6 obtained by the interaction of high-purity basic bismuth(III) nitrates [Bi6O4(OH)4](NO3)6·H2O and [Bi6O5(OH)3](NO3)5·3H2O with DL-tartaric acid solution have been investigated ...
Evgeniya V. Timakova   +2 more
doaj   +1 more source

Synthesis of porous ceramics for ceramic biosensors [PDF]

open access: yesMATEC Web of Conferences, 2021
Highly porous ceramic materials with open porosity are perspective for manufacture of the biosensors. Those materials are used as a framework and open porosity allows to inject a necessary functional components into internal volume.
Khusnutdinov Vyacheslav, Ulihin Artem
doaj   +1 more source

Thermal transformations of bismuth (III) tartrates

open access: yesChimica Techno Acta, 2022
The processes of oxidative thermolysis of bismuth tartrates [Bi(NO3)(C4H4O6)]·3H2O and BiC4H3O6·H2O precipitated from bismuth nitrate solutions was studied by the methods of X-ray diffraction, thermal analysis, IR spectroscopy and chemical analysis.
Liubov I. Afonina   +4 more
doaj   +1 more source

Diamondoids Under Pressure

open access: yesGeophysical Monograph Series, Page 341-349., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sulgiye Park, Yu Lin, Wendy L. Mao
wiley  

+1 more source

Mechanochemistry-Based Synthesis of Highly Crystalline γ‑Zirconium Phosphate for Selective Ion Exchange

open access: yes, 2018
Highly crystalline γ-zirconium phosphate has been synthesized by a novel minimalistic approach and investigated as a selective ion exchanger for cesium, ammonium and potassium.
Xiao Dong (Tony) Wang (5003621)   +7 more
core   +1 more source

Mechanochemical Synthesis of Lithium-Niobate-Doped Copper Oxide

open access: yesKONA Powder and Particle Journal, 2013
It is demonstrated by means of XRD, IR spectroscopy, electron microscopy, laser light scattering and measurements of the specific surface area that mechanical activation of a mixture of lithium carbonate, niobium pentoxide and copper oxide in the ...
Aleksey Alekseevich Gusev   +2 more
doaj   +1 more source

Polymer Mechanochemistry in Microbubbles

open access: yesAdvanced Materials, 2023
AbstractPolymer mechanochemistry is a promising technology to convert mechanical energy into chemical functionality by breaking covalent and supramolecular bonds site‐selectively. Yet, the mechanochemical reaction rates of covalent bonds in typically used ultrasonication setups lead to reasonable conversions only after comparably long sonication times.
Mingjun Xuan   +10 more
openaire   +3 more sources

In vivo polymer mechanochemistry with polynucleotides [PDF]

open access: yes
Polymer mechanochemistry utilizes mechanical force to activate latent functionalities in macromolecules and widely relies on ultrasonication techniques.
Chuanjiang , He   +8 more
core   +2 more sources

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