Results 201 to 210 of about 226,366 (293)

Radical‐Based On‐Surface Transformation of Nonplanar Aromatics Into Nonbenzenoid Nanographenes

Angewandte Chemie, EarlyView.
Formation of radicals in nonplanar hydrocarbons through thermally induced dehydrogenation leads to molecular transformation via intramolecular radical‐based cyclization and dimerization, leading to formation of nonbenzenoid nanographenes. ABSTRACT On‐surface synthesis has emerged as a powerful tool for atomically precise C─C bond formation, enabling ...
Daniel Rothhardt, Ming‐Lun Pan, Michael Píro, Stefan Niklaus Heinen, Christian Wäckerlin, Hans Josef Hug, Yao‐Ting Wu, Karl‐Heinz Ernst, Miloš Baljozović   +8 more
wiley   +1 more source

Origin Traceability of Chinese Mitten Crab (<i>Eriocheir sinensis</i>) Using Multi-Stable Isotopes and Explainable Machine Learning. [PDF]

Foods
Wang D, Yao C, Lu Y, Huang D, Li Y, Wu X, Song W, Rao Q.   +7 more
europepmc   +1 more source

Palladium‐Doping‐Enabled Interface Synergy for Superb Ampere Level Ammonia Electrosynthesis From Nitrate

Angewandte Chemie, EarlyView.
Isolated Pd sites in a metallic Co matrix boost nitrate‐to‐ammonia conversion. Pd doping optimizes intermediate adsorption and reconstructs the interfacial microenvironment, promoting cation enrichment and a hydrogen‐down‐oriented water network. This dual modulation facilitates proton transfer and intermediate stabilization, enabling high ammonia ...
Qun He, Chuanqiang Wu, Zhangsheng Shi, Dongxue Yu, Wei Jiang, Li Song, Xin Wang   +6 more
wiley   +1 more source

Differentiation of water sources and hydrological thresholds of herb-to-shrub communities across a revegetated chronosequence in Baijitan National Nature Reserve, China: a quantitative analysis using hydrogen-oxygen stable isotopes. [PDF]

Front Plant Sci
Shunxia W, Na Z, Yifei H, Xiaojing M, Hongbin M.   +4 more
europepmc   +1 more source

Graphdiyne as a Hole‐Transport Channel in Carbon Nitride Heterojunctions for Synergistic CO2 Reduction and γ‐Butyrolactone Synthesis

Angewandte Chemie, EarlyView.
A fully metal‐free heterojunction constructed from graphdiyne (GDY) and polymeric carbon nitride (PCN) enables efficient coupling of CO2 reduction and tetrahydrofuran oxidation. GDY serves as a hole‐transport channel, establishing a built‐in electric field that drives spatial charge separation. The optimized catalyst achieves near‐unity selectivity for
Xuan Zhang, Junqi Chai, Chong Wang, Wei Lin, Jing Tang, Oleksandr Savateev, Jimmy C. Yu, Jiajia Cheng   +7 more
wiley   +1 more source

Local Chemical Gradients in a Mammalian Cortex Measured In Vivo With a Silicon Nanodialysis Mass Spectrometry Platform

Angewandte Chemie, EarlyView.
Fluorescence image of the coronal slice of mouse brain where multiple neurochemicals have been measured in vivo with a nanodialysis platform coupled to CE‐MS to reveal strong millimeter‐scale spatial chemical gradients. Formation and maintenance of such local chemical compartments in the otherwise diffusion‐homogeneous cortex indicates strong ...
Weihua Shi, Keyin Li, Yu Ding, Alex G. Armstrong, Jonathan V. Sweedler, Yurii Vlasov   +5 more
wiley   +1 more source

Application of Stable Isotopes and Multi Elemental Fingerprints to Verify the Origin of Premium Chinese Hainan Bananas. [PDF]

Foods
Huang Y, Mei H, Zhang Y, Wang M, Huan Z, Nie J, Rogers KM, Nuralykyzy B, Li C, Yuan Y.   +9 more
europepmc   +1 more source

Hydrogen Isotope Exchange in Pyridine Catalyzed by an Iron(II) Imido Complex: Counterion‐Directed Regioselectivity

Angewandte Chemie, EarlyView.
Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng, Guorong Li, Yafei Gao, Nobuyuki Yamamoto, Maren Pink, Qian Peng, Jeremy M. Smith   +6 more
wiley   +1 more source

Tree-ring stable isotopes from the European Alps reveal long-term summer drying over the Holocene. [PDF]

Sci Adv
Arosio T, Leuenberger M, Nicolussi K, Esper J, Krusic PJ, Bebchuk T, Tegel W, Hafner A, Kirdyanov A, Schlüchter C, Reinig F, Muschitiello F, Büntgen U.   +12 more
europepmc   +1 more source