Depositing Molecular Graphene Nanoribbons on Ag(111) by Electrospray ‐ Controlled Ion Beam Deposition: Self‐assembly and On‐Surface Transformations

The chemical processing of low dimensional carbon nanostructures is crucial for their integration in future devices. Here we apply a new methodology in atomically precise engineering by combining multistep solution synthesis of N-doped molecular graphene nanoribbons (GNRs) with mass-selected ultra-high vacuum electrospray - controlled ion beam deposition...

17h

Biomimetic FeMo(Se, Te) as Joint Electron Pool Promoting Nitrogen Electrofixation

It has been long believed that FeMoS structure, where Fe is bonded with S, plays a pivotal role as a biomimetic catalyst for electrochemical nitrogen (N 2 ) fixation . Nevertheless, the structure of Fe bonded to heavier analogues (Se or Te) has never been explored for N 2 electrofixation. Here, we theoretically predict the electronic structure...

17h

Origin of High Diastereoselectivity in Reactions of Seven‐Membered‐Ring Enolates

Unlike many reactions of their six-membered ring counterparts, the reactions of chiral seven-membered-ring enolates are highly diastereoselective. Diastereoselectivity was observed for a range of substrates, including lactam, lactone, and cyclic ketone derivatives. The stereoselectivity arises from torsional and steric interactions that develop when...

17h

Construction of an Autocatalytic Hybridization Assembly Circuit for Amplified In Vivo MicroRNA Imaging

The lowly expressed analyte in complex cytoplasmic milieu necessitates the development of non-enzymatic autocatalytic DNA circuits with high amplification and anti-interference performance. Herein, we engineered a versatile and robust stimuli-responsive autocatalytic hybridization assembly (AHA) circuit for high performance in vivo bioanalysis. Under...

17h

Anchoring Ionic Liquid in Copper Electrocatalyst for Improving CO2 Conversion to Ethylene

Electrochemical conversion of CO2 to valuable fuels is appealing for CO2 fixation and energy storage. The Cu-based catalysts feature unique superiorities, but achieving high ethylene selectivity is still restricted. In this study, we propose the anchoring of ionic liquid (IL) on Cu electrocatalyst for improving the electrochemical CO2 reduction to...

1d

Topochemical Synthesis of a Heterochiral Peptide Polymer in Different Polymorphic Forms from Crystals and Aerogels

We have designed a heterochiral dipeptide monomer (N 3 -D-Ala-L-Val-NHCH 2 C≡CH), modified with   azide and alkyne at its termini for topochemical azide-alkyne cycloaddition (TAAC) polymerization. We obtained two different polymorphs; PI (P2 1 ) from DCM-toluene mixture, and PII (P-1) from hexane-ethyl acetate mixture. PI adopts parallel β-sheet...

1d

A DNA‐based two‐component excitonic switch utilizing high‐performance diarylethenes

Nucleosidic diarylethenes (DAEs) are an emerging class of photochromes but have rarely been used in materials science. Here, we have developed doubly methylated DAEs derived from 2’-deoxyuridine with high thermal stability and fatigue resistance. These new photoswitches not only outperform their predecessors but also rival classical non-nucleosidic...

1d

Screening Heteroatom Configurations for Reversible Sloping Capacity Promises High‐Power Na‐Ion Batteries

Using a heteroatom configuration screening strategy upon P/O-doping, irreversible configurations of C−O and PO3 − were removed, while the configurations like C=O and PO4 3−/PO2 3− as well as the free radicals could be retained or even enhanced. The Na storage mechanisms were also studied using the resulting carbon. This work inspires the design and...

1d

Bacteria‐Triggered Solar Hydrogen Production via Platinum(II)‐Tethered Chalcogenoviologens

A series of platinum(II)-tethered chalcogenoviologens with three-in-one functions was prepared. When bacteria were used as a natural sacrificial agent, PtL+-SeV2+ could realize not only bacteria-triggered one-component solar H2 production but also antibacterial action. This system laid the foundation for solving various real-life problems via a simple...

1d

Chiral Arylene Diimide Phosphors: Circularly Polarized Ambient Phosphorescence from Bischromophoric Pyromellitic Diimides

Appending pyromellitic diimide phosphors to an enantiomeric diaminocyclohexane core results in a chiral bischromophoric phosphor that shows circularly polarized phosphorescence (CPP) under ambient conditions. Solution-processable PMMA films of the bischromophoric phosphors show mirror-imaged cyan CPP with a high phosphorescence quantum yield (18 % in...

1d