Results 21 to 30 of about 385,491 (269)

Metal‐Free Active Template: A Straightforward Route to 4‐Aminopyridinium‐Based Rotaxane Molecular Shuttles

open access: yesAngewandte Chemie, EarlyView.
Leigh's metal‐free active template‐based SNAr of an amine on halogenopyridiniums, in the presence of a crown ether, successfully afforded 4‐aminopyridinium‐containing rotaxanes. Further molecular machinery was carried out by deprotonation‐then‐carbamoylation of the conjugated amino moiety.
Ivaylo Stoyanov   +2 more
wiley   +2 more sources

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

A Deep‐Red‐Absorbing Osmium(II) Complex as a Photosensitizer for Photodynamic Therapy Inducing Immunogenic Cell Death

open access: yesAngewandte Chemie, EarlyView.
A deep‐red‐excited osmium(II) photosensitizer (Os2) induces immunogenic cell death (ICD) under 740 nm irradiation and triggers robust anti‐tumor immune responses both in vitro and in vivo. ABSTRACT Immunogenic cell death (ICD), which converts tumor cells into their own vaccine, plays a pivotal role in the development of novel anticancer therapies. Here,
Yiyi Zhang   +12 more
wiley   +2 more sources

Bacon et la chimie

open access: yesMethodos, 2005
According to the most part of historians, the reception of Bacon’s natural philosophy shows its failure to restore sciences. Bacon was not read faithfully, because his natural philosophy did not grasp with the new science’s canons.
Luc Peterschmitt
doaj   +1 more source

Detection of Protein–Protein Interactions in Escherichia coli With Single Molecule Sensitivity

open access: yesAdvanced Science, EarlyView.
This article describes a regulatory circuit in Escherichia coli able to detect protein–protein interactions with exquisite sensitivity. The interaction between two hybrid proteins fused to Bordetella pertussis adenylate cyclase and its activator calmodulin triggers a potent cyclic AMP signaling cascade.
Marilyne Davi, Daniel Ladant
wiley   +1 more source

La Chimie Analytique en France: Bilan et Perspectives.

open access: yes, 2022
International audienceLe positionnement de la recherche et de la formation en Chimie Analytique en France seront présentés : les forces dans les différentes régions et le positionnement international.
Jaffrezic-Renault, Nicole
core   +1 more source

Gold(III) Semiquinone Complexes: Synthesis, Structure, and Application in Photocatalysis

open access: yesAngewandte Chemie, EarlyView.
Au(III) catecholate complexes engage into electron donor acceptor (EDA) interactions with aryldiazonium salts, enabling single‐electron transfer under green light irradiation. Ligand‐centered one‐electron oxidation to stable semi‐quinone complexes provides a new platform for standalone Au(III) photoredox catalysis, as substantiated by the C–H arylation
Miguel A. Gonzálvez   +8 more
wiley   +2 more sources

Le contexte : reconversion de la chimie vers la chimie verte

open access: yesOléagineux, Corps gras, Lipides, 2012
Chemical industry is a key sector on the world industrie with a twolrd urnover that reached 1 871 billions of euros in 2009 and with an annual turnove in France of 77 billions in 2010.
Bewa Hilaire, Le Ravalec Virginie
doaj   +1 more source

La construction de la valeur économique d’une revue en chimie

open access: yesRevue Française des Sciences de l’Information et de la Communication, 2017
Dans le domaine de la chimie, la facturation de l’article à l’auteur est devenue depuis quelques années la modalité principale d’open access. Le montant des frais (appelés Article Processing Charges ou APC) varie de quelques centaines à quelques milliers
Marianne Noel
doaj   +1 more source

La chimie verte comme catalyseur de l'innovation !

open access: yes, 2021
Il ne se passe pas un jour sans que l'on entende des nouvelles alarmantes sur le changement climatique ou sur le rythme insoutenable auquel le monde se développe.
Gallou, Fabrice
core  

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