Results 31 to 40 of about 280,815 (357)

Towards a stable ion-solvating polymer electrolyte for advanced alkaline water electrolysis [PDF]

open access: yes, 2017
Steric hindrance is employed as a design strategy of polybenzimidazoles for ion-solvating polymer electrolyte membrane alkaline water electrolysis.
Aili, David   +5 more
core   +1 more source

1,9-Bis(2-pyridyl)-1,2,8,9-tetrathia-5-oxanonane

open access: yesMolbank, 2009
Disulfide crosslinking of proteins is typically performed by treating proteins bearing cysteine residues with small-molecule disulfide reagents. The process results in the formation of a mixed disulfide intermediate, which then reacts with the cysteine ...
Jeet Kalia, Ronald T. Raines
doaj   +1 more source

The effect of polyether on the separation of pentlandite and serpentine

open access: yesJournal of Materials Research and Technology, 2015
The effect of polyether on the separation of pentlandite from serpentine has been studied. In addition to flotation and sedimentation tests, electrophoresis and adsorption tests have been conducted.
Xiaowen Zhou, Bo Feng
doaj   +1 more source

Exploring the Steric Hindrance of Alkylammonium Cations in the Structural Reconfiguration of Quasi‐2D Perovskite Materials Using a High‐throughput Experimental Platform

open access: yesAdvanced Functional Materials, 2022
Reduced‐dimensional (2D or quasi‐2D) perovskites have recently attracted considerable interest due to their superior long‐term stability. The nature of the intercalating cations plays a key role in determining the physicochemical properties and stability
Jiyun Zhang   +18 more
semanticscholar   +1 more source

UNA PROPUESTA PARA ENSEÑAR EL EFECTO DE LA FORMA DE LAS MOLÉCULAS EN LA REACTIVIDAD QUÍMICA

open access: yesQuímica Nova, 2015
We address the concept of steric effect in the pursuit of establishing quantitative correlations between reactivity of molecules and their molecular shape.
José G. Cermeños-Estrada   +2 more
doaj   +1 more source

Exploring the Mechanism of the Palladium-Catalyzed 3-Butene-2-ol Amination Reaction: A DFT Study

open access: yesFrontiers in Chemistry, 2020
Palladium-catalyzed asymmetric allylic substitution, due to its valuable reactive profile, has become a quite useful tool in organic synthesis fields.
Lingshan Lyu   +4 more
doaj   +1 more source

London Dispersion Interactions Rather than Steric Hindrance Determine the Enantioselectivity of the Corey-Bakshi-Shibata Reduction. [PDF]

open access: yesAngew Chem Int Ed Engl, 2021
The well‐known Corey–Bakshi–Shibata (CBS) reduction is a powerful method for the asymmetric synthesis of alcohols from prochiral ketones, often featuring high yields and excellent selectivities.
Eschmann C, Song L, Schreiner PR.
europepmc   +2 more sources

Synthesis and structure elucidation of novel pyrazolyl-2-pyrazolines obtained by the reaction of 3-(3-aryl-3-oxopropenyl)chromen-4-ones with phenylhydrazine [PDF]

open access: yes, 2012
Novel 3-aryl-5-{4-[5-(2-hydroxyphenyl)-1-phenylpyrazolyl]}-2-pyrazolines 2a-g have been prepared by the treatment of 3-(3-aryl-3-oxopropenyl)chromen-4-ones 1a-g with phenylhydrazine in refluxing acetic acid. NMR studies on deuteriochloroform solutions of
Jeko, József   +3 more
core   +1 more source

Resummed thermodynamic perturbation theory for bond cooperativity in associating fluids with small bond angles: Effects of steric hindrance and ring formation [PDF]

open access: yes, 2014
In this paper we develop a thermodynamic perturbation theory for two site associating fluids which exhibit bond cooperativity. We include both steric hindrance and ring formation such that the equation of state is bond angle dependent.
Amin Haghmoradi   +3 more
core   +2 more sources

Antibodies targeting enzyme inhibition as potential tools for research and drug development

open access: yesBiomolecular Concepts, 2021
Antibodies have transformed biomedical research and are now being used for different experimental applications. Generally, the interaction of enzymes with their specific antibodies can lead to a reduction in their enzymatic activity.
Pérez de la Lastra José Manuel   +5 more
doaj   +1 more source

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