A Systematic Study of Coumarin–Tetrazine Light‐Up Probes for Bioorthogonal Fluorescence Imaging

Light on ! A series of seventeen coumarin–tetrazine probes that produce in reaction with trans‐cyclooctene and bicyclononyne dienophile bright fluorophores were synthesized and evaluated in different bioimaging applications. These probes show excellent turn‐on properties and can be used for fast and selective bioorthogonal fluorescence labeling in live...

58m

Past, Present and Future of the European Chemical Society (EuChemS)

50 years of EuChemS : In this Guest Editorial, F. Rutjes, EuChemS President‐Elect, and P. Goya, EuChemS President, provide a brief overview of the history of the European Chemical Society and of what has been achieved over the past decades as well as an impression of the challenges that lie ahead.

58m

An Air‐ and Water‐Stable Hydrogen‐Bond‐Donor Catalyst for the Enantioselective Generation of Quaternary Carbon Stereocenters by Additions of Substituted Cyanoacetate Esters to Acetylenic Esters

Enantioselective catalysis : Thirteen examples of the title reaction are effected with a catalyst derived from the D 3 symmetric chiral trication Δ‐[Co((S ,S )‐dpen)3]3+ (dpen=1,2‐diphenylethylenediamine), which contains both cobalt and carbon stereocenters. The mechanism involves hydrogen bonding between the NH groups and the substrates. Abstract...

58m

Three‐Component Reaction for the Synthesis of Highly Functionalized Propargyl Ethers

Power 3 : A copper‐catalyzed three‐component reaction of hypervalent iodine reagents, diazo compounds and alcohols has been developed. The transformation gives access to functionalized propargylic ethers with high structural diversity, as variation of the three partners with numerous functional groups was tolerated. The reaction is speculated to proceed...

58m

Tuning Aqueous Supramolecular Polymerization by an Acid‐Responsive Conformational Switch

Switch and tune ! The trans –cis conformational switching of 2,2’‐bipyridine in response to acid was exploited to tune supramolecular polymerization processes. For this purpose, the aqueous self‐assembly of a bipyridine‐based linear bolaamphiphile that self‐assembles under standard conditions into cooperative supramolecular polymers was investigated....

58m

The Valence Orbitals of the Alkaline Earth Atoms

Quantum chemical calculations of the oxides AeO, imides AeNH and dihydrides AeH 2 of the alkaline earth atoms Ae = Be, Mg, Ca, Sr, Ba and the calcium cluster Ca 6 H 9 (N(SiMe 3 ) 2 ) 3 (PMDTA) 3 have been carried out using density functional theory. The analysis of the electronic structures using charge and energy partitioning methods...

58m

Self‐Assembly Behavior of Diacetylenic Acid Molecules upon Vapor Deposition: Odd‐Even Effect on the Film Morphology

A series of linear carboxylic acids containing diacetylenic unit at different positions along the chain (C 12 H 25 (C≡C) 2 (CH 2 ) n COOH, n = 7‐11) were vacuum‐deposited on clean silicon substrate. Morphologies of the initial films after UV‐irradiation were studied. A clear odd‐even effect on the morphology of initial film was observed in...

2h

Ce‐doped ordered mesoporous cobalt ferrite phosphides as a robust catalyst for water oxidation

Controllable synthesis and rational design of ordered nanostructures are crucial for their renewable energy applications. In this work, a mesoporous CoP/Fe2P doped with 5% Ce via a simple nanocasting method is designed as a superior electrocatalyst for oxygen evolution reaction (OER). The well‐designed composite delivers an efficient electrocatalytic...

4h

[Ga3+8Sm3+2, Ga3+8Tb3+2] metallacrowns are highly promising ratiometric luminescent molecular nanothermometers operating at physiologically relevant temperatures

Nanothermometry is the study of temperature at the submicron scale with a broad range of potential applications such as cellular studies or electronics. Molecular luminescent based nanothermometers offer a non‐contact means to record these temperatures with high spatial resolution and thermal sensitivity. A luminescent based molecular thermometer comprised...

10h

Insight into the dependence of particle size of ZIF‐8 on the performance in nanocarbon‐based supercapacitors

Carbon materials derived from zeolitic imidazolate framework‐8 (ZIF‐8) and the relevant composites have been intensively investigated in the supercapacitors. The particle size of used ZIF‐8 ranges from dozens of nanometers to several microns. So far, the influence of the particle size of ZIF‐8 on the capacitive performances is still not clear. Herein,...

10h