Results 61 to 70 of about 237,640 (302)

Prague's Emission Fourier Transform Microwave Spectrometer - Design and Preliminary Results [PDF]

open access: yes, 2013
The design, performance and operation of the high resolution microwave spectrometer are described. The spectrometer is based on the Fabry-Perot resonator supplemented by a pulsed supersonic nozzle for adiabatic cooling of the sample.
Cerny, P.   +5 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Intramolecular cascade annulation triggered by rhodium(III)-catalyzed sequential C(sp2)–H activation and C(sp3)–H amination

open access: yesBeilstein Journal of Organic Chemistry, 2019
A rhodium(III)-catalyzed intramolecular oxidative annulation of O-substituted N-hydroxyacrylamides for the construction of indolizinones via sequential C(sp2)–H activation and C(sp3)–H amination has been developed.
Liangliang Song   +3 more
doaj   +1 more source

Glycerol transformation to pharmaceutically important aryloxypropanediols by microwave mediated synthesis

open access: yesCurrent Research in Green and Sustainable Chemistry, 2022
Green chemistry, so-called sustainable chemistry, alerts the chemist to design processes that minimize the exercise and production of the unsafe substance.
H. Bhagyalakshmi, B.S. Surendra
doaj   +1 more source

High resolution spectroscopy of methyltrioxorhenium: towards the observation of parity violation in chiral molecules [PDF]

open access: yes, 2010
Originating from the weak interaction, parity violation in chiral molecules has been considered as a possible origin of the biohomochirality. It was predicted in 1974 but has never been observed so far.
Alexander Shelkovnikov   +70 more
core   +3 more sources

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Accelerated Esterification by Domestic Microwave for the Undergraduate Organic Chemistry

open access: yesOrbital: The Electronic Journal of Chemistry
The aim of this work was to offer a green laboratory experiment for undergraduate organic chemistry course.  Esterification accelerated by domestic microwave was studied.  The reaction occurred within 3 minutes.
Ruchanok Tearavarich
doaj   +1 more source

Unusual behavior in the reactivity of 5-substituted-1H-tetrazoles in a resistively heated microreactor

open access: yesBeilstein Journal of Organic Chemistry, 2011
The decomposition of 5-benzhydryl-1H-tetrazole in an N-methyl-2-pyrrolidone/acetic acid/water mixture was investigated under a variety of high-temperature reaction conditions.
Bernhard Gutmann   +5 more
doaj   +1 more source

Experimental analysis of liquid metal galinstan for electronics actuation

open access: yesElectronics Letters, 2022
The experimental interfacial tension measurements of galinstan as a function of applied DC voltages are presented. The measurements are based on a tailored, modified pendent drop setup to make it suitable for this experiment.
M.S. Anwar, F. Ehlers, A. Bangert
doaj   +1 more source

End-group functionalization of poly(2-oxazoline)s using methyl bromoacetate as initiator followed by direct amidation [PDF]

open access: yes, 2019
Poly(2-alkyl/aryl-2-oxazoline)s (PAOx) are an alluring class of polymers for many applications due to the broad chemical diversity that is accessible for these polymers by simply changing the initiator, terminating agent and the monomer(s) used in their ...
Arys, Koen   +4 more
core   +2 more sources

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