Angewandte Chemie最新文献

“I'm always in a good mood when I see someone in my group achieve something, especially when I know they've been working hard on this aspect of their work… The most challenging part of my job is its diversity. You're a researcher, writer, teacher, fundraiser, coach and more all at once…” Find out more about Louise Walport in her Introducing… Profile.

“The most exciting thing about my research is the potential to develop new sustainable methods for synthesizing important organic compounds… My motto is: ‘Be the change you wish to see in the world…’ ” Find out more about Junfeng Yang in his Introducing… Profile.

Radiofrequency amplification by stimulated emission of radiation (RASER) creates masing of nuclear spin Zeeman energy level transitions. In their Research Article (e202406551) Eduard Y. Chekmenev et al. show the utility of an active-feedback wireless NMR masing detector with the quality factor enhancement up to 1,000,000 to create a RASER at 300 MHz that was otherwise not possible with conventional passive NMR detectors. This active-feedback-circuit approach potentially enables RASER sensing in a wide range of in vivo applications.

Heterometallic Complexes. In their Communication (e202408415), Kazuhiro Uemura synthesized a paramagnetic chain aligned as –Rh–Rh–Pt–Ni–Pt– with heterometallic bonds. The unpaired electrons on the Ni atoms strongly interact antiferromagnetically through metal–metal bonds.

Heterogeneous Catalysis. A seesaw effect between Pt single-atoms and Pt nanoparticles in the catalytic refining of lignin monomers, viz. demethoxylation on a single-atom catalyst versus deoxygenation on a nanoparticle, is disclosed by Changzhi Li et al. in their Research Article (e202404683).

“My favorite saying/quote is: ‘The magic you are looking for is in the work you are avoiding’ (as a person who procrastinates)… The most important thing I have learned from my students is that I will always be a student myself…” Find out more about Ali Nazemi in his Introducing… Profile.

Coordination engineering strategy for optimizing the catalytic performance of single-atom catalysts (SACs) has been rapidly developed over the last decade. However, previous reports on copper SACs for nitrate reduction reactions (NO₃RR) have mostly focused on symmetric coordination configurations such as Cu-N₄ and Cu-N₃. In addition, the mechanism in terms of the regulation of coordination environment and catalytic properties of SACs has not been well demonstrated. Herein, we disrupted the local symmetric structure of copper atoms by introducing unsaturated heteroatomic coordination of Cu−O and Cu−N to achieve the coordination desymmetrization of Cu-N₁O₂ SACs. The Cu-N₁O₂ SACs exhibit an efficient nitrate-to-ammonia conversion with a high FE of ~96.5 % and a yield rate of 3120 μg NH₃ h⁻¹ cm⁻² at −0.60 V vs RHE. As indicated by in situ Raman spectra, the catalysts facilitate the accumulation of NO₃⁻ and the selective adsorption of *NO₂, which were further confirmed by the theoretical study of surface dipole moment and orbital hybridization. Our work illustrated the correlation between the coordination desymmetrization and the catalytic performance of copper SACs for NO₃RR.

A synapse-mimicking nanopipette method was developed to electrochemically monitor single vesicle dynamics induced by lipid-tau interactions. To mimic the lipid environment in synapses, model vesicles and a modified lipid layer were confined within a nanopipette, as reported by Ru-Jia Yu, Yi-Tao Long et al. in their Communication (e202406677). Characteristic ionic current oscillations were recorded and could be used to evaluate the binding affinity of tau protein, indicating that phosphorylated tau inhibits vesicle dynamics through strong interactions with synaptic vesicles.

Incorporating Jahn–Teller distortion into a Mott–Hubbard system emerges as an effective strategy for developing high-performance nonlinear optical materials. In their Research Article (e202406941), Chi Zhang, Zhipeng Huang employ lattice distortion to provide two distinct transition pathways with varying probabilities, while the Mott–Hubbard configuration ensures the transition sequence. This synergistic design unveils the excited-state absorption in (MA)₂CuX₄, enabling these materials to simultaneously exhibit a large nonlinear absorption coefficient and substantial modulation depth.