Results 61 to 70 of about 107,279 (237)

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies   +2 more
wiley   +1 more source

Technological Features of Producing High-Index Oils in the Alkylation Process

open access: yesEurasian Chemico-Technological Journal
This article presents the results of studies on key technological parameters-namely temperature and the use of modified ZSM-5 catalysts with Zr and Fe-in the alkylation process aimed at producing high-viscosity-index oils.
G.A. Huseynova   +3 more
doaj   +1 more source

Efficient and selective N-alkylation of amines with alcohols catalysed by manganese pincer complexes

open access: yesNature Communications, 2016
Hydrogen borrowing is an attractive method for C-N bond formation - avoiding multiple alkylation products and reducing waste - but often is carried out with noble metals.
Saravanakumar Elangovan   +5 more
doaj   +1 more source

Asymmetric alkylation of diarylmethane derivatives. Improved results using methoxyethoxy substituent

open access: yes, 2004
Alkylation of 2-methoxyethoxyphenyl phenyl methane using sec-BuLi and (−)-sparteine has been carried out in excellent yields and up to 94% ee.
Rossington, SB   +3 more
core   +1 more source

Polymeric Sorbents as Energy‐Efficient Alternative to Cryogenic Distillation for Light Hydrocarbon Purification

open access: yesAdvanced Materials, EarlyView.
The transition from cryogenic distillation to polymeric sorbents for light hydrocarbon purification is crucial for energy and environmental sustainability. The polymeric sorbents are engineered to separate gas mixtures based on their specific properties.
Kelechi Festus   +9 more
wiley   +1 more source

The Usefulness of Trivalent Phosphorus for the Synthesis of Dendrimers

open access: yesMolecules, 2021
Dendrimers are hyperbranched macromolecules, which are synthesized step-by-step by the repetition of a series of reactions. While many different types of dendrimers are known, this review focusses on the use of trivalent phosphorus derivatives ...
Anne-Marie Caminade   +2 more
doaj   +1 more source

Asymmetric alkylation of diphenylmethane derivatives using (-)-sparteine

open access: yes, 2004
Alkylation of 2-oxygenated diphenylmethane derivatives using sec-butyllithium and (−)-sparteine gave enantiomeric excesses of up to 60% with allyl bromide but alkylations with methyl electrophiles were poorly selective. When compounds with a free hydroxy
Rossington, SB   +3 more
core   +1 more source

Diketopyrrolopyrrole‐Based Cation as a Semiconducting Spacer in Layered Perovskite

open access: yesAdvanced Materials, EarlyView.
Diketopyrrolopyrrole cation incorporated layered perovskites exhibiting extended absorption profiles and enhanced charge carrier mobility with type‐II energy alignment. The improved photoconversion efficiency demonstrates the critical role of incorporating organic semiconductors in optimizing layered perovskite performance.
Waygen Thor   +8 more
wiley   +1 more source

Reaction of Some Substituted (Un)Substituted Isatins with 1,ω-Alkanes and Their Products with Sodium Azide

open access: yesChemistry Proceedings, 2021
Azide derivatives of isatins were the initial materials needed for click chemistry, so as to form 1,2,3-triazoles in order to synthesize the hybrid compounds of 1,2,3-triazole–isatin with monosaccharide moieties.
Nguyen Minh Tri   +11 more
doaj   +1 more source

Innate Immunocompetent hiPSC‐Derived Neurospheroids Capture Early CNS Responses to rAAV

open access: yesAdvanced Science, EarlyView.
Knowledge of human CNS immune responses to AAV‐based gene therapies remains limited due to the lack of immune‐competent human models. Here, a hiPSC‐derived 3D neuroimmune platform integrating neurospheroids and microglia is established using stirred‐tank bioreactors.
Catarina M. Gomes   +14 more
wiley   +1 more source

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