Results 41 to 50 of about 21,289 (213)

Reply to: Inconsistent kinetic isotope effect in ammonia charge exchange reaction measured in a Coulomb crystal and in a selected-ion flow tube. [PDF]

Nat Commun, 2022
Petralia LS, Tsikritea A, Loreau J, Softley TP, Heazlewood BR.   +4 more
europepmc   +1 more source

Unlocking Methane Generation via Photo‐Thermal‐Coupled CO2 Hydrogenation by Integrating FeNiCrMnCo Multicomponent Alloy with GaN Nanowires

Advanced Science, EarlyView.
A noble‐metal‐free FeNiCrMnCo multicomponent alloy (MCA) integrated with GaN nanowires achieves efficient photo‐thermal‐coupled CO₂ methanation, delivering a methane production rate of 199 mmol∙g−¹∙h−¹ with 93% selectivity. The system demonstrates exceptional stability and tunable catalytic properties, offering a sustainable pathway for solar‐driven ...
Muhammad Salman Nasir, Ying Zhao, Haotian Ye, Jinglin Li, Ping Wang, Ding Wang, Xinqiang Wang, Jun Song, Zhen Huang, Baowen Zhou   +9 more
wiley   +1 more source

Transient Interdomain Interactions Modulate the Monomeric Structural Ensemble and Self‐Assembly of Huntingtin Exon 1

Advanced Science, EarlyView.
Polyglutamine (polyQ) tract expansion (≥ 36 amino acids) within the N‐terminal region of the Huntingtin protein (Httex1) causes Huntington's disease (HD), for which the underlying causes are not well‐understood. The authors performed computer simulations to understand the cause of HD at the molecular level.
Priyesh Mohanty, Tien Minh Phan, Jeetain Mittal   +2 more
wiley   +1 more source

Kinetic Isotope Effect in Low-Energy Collisions between Hydrogen Isotopologues and Metastable Helium Atoms: Theoretical Calculations Including the Vibrational Excitation of the Molecule. [PDF]

J Chem Theory Comput, 2021
Pawlak M, Żuchowski PS, Jankowski P.
europepmc   +1 more source

Hydrocyclization/Defluorination of CF3‐Substituted Acrylamides: Insights from Kinetics of Hydrogen Atom Transfer

Advanced Science, EarlyView.
The study develops a H•/H– transfer strategy enabling efficient hydrocyclization/defluorination of CF3‐acrylamides to synthesize Seletracetam derivatives with gem‐difluoroalkenes. Mechanistic studies reveal distinct pathways: the NiII‐H/PhSiH3 system operates through a hydrogen atom transfer process, while the 1,4‐Michael addition of H– appears to be ...
Yanjun Wan, Ronghui Shao, Jack R. Norton
wiley   +1 more source

Two‐Step Tandem Catalysis for High‐Efficiency Ammonia Synthesis Via Nitrate Reduction on Anion‐Intercalated CoNi LDH and Cu/Cu2O

Advanced Science, EarlyView.
By integrating Cu/Cu2O and CoNi LDH, tandem kinetic descriptors, including a volcano curve, are employed to predict rate constants, facilitating ideal kinetic matching for efficient ammonia synthesis. The highest ammonia yield (1.12 mmol cm−2 h−1) and Faraday efficiency (99.78%) are achieved by rate matching between Cu/Cu2O and MoO4‐CoNi LDH.
Changzheng Lin, Weijia Li, Hao Chen, Jiangtao Feng, Mengyuan Zhu, Jinwen Shi, Mingtao Li, Bo Hou, Zhenyu Wang, Xin Chen, Jia Liu, Wei Yan   +11 more
wiley   +1 more source

Water‐Catalytic Deconstructive and Proton Transfer Cyclopropanation of Sulfoxonium Ylide with Olefin

Advanced Science, EarlyView.
Water‐catalytic deconstructive and proton transfer cyclopropanation of sulfoxonium ylide with olefin is developed through a sequential water‐mediated ring‐closing/opening reaction. This atom‐economical, environmentally friendly methodology offers easy access to a range of cyclopropyl ketones with moderate to good yields.
Xianglin Yu, Liuting Huang, Haiyue Yang, Lijuan Song, Yi Jin   +4 more
wiley   +1 more source

Stable Pincer Gold(III)‐TADF Emitters with Extended Donor–Acceptor Separation for Efficient Vacuum‐Deposited OLEDs with Operational Lifetime (LT95) up to 3831 h at 1000 cd m−2

Advanced Science, EarlyView.
Novel pincer gold(III)‐TADF (thermally activated delayed fluorescence) emitters with extended π‐distances exhibit small singlet‐triplet energy gaps (ΔEST), efficient reverse intersystem crossing (RISC), enhanced radiative decay rates and improved excitons utilization, leading to efficient electroluminescence.
Hui‐Xing Shu, Shuo Xu, Wai‐Pong To, Gang Cheng, Chi‐Ming Che   +4 more
wiley   +1 more source

Isotope‐Enriched Cubic Boron Arsenide with Ultrahigh Thermal Conductivity

Advanced Science, EarlyView.
The high‐quality isotope‐enriched cubic boron arsenide crystals that enhance the thermal conductivity of c‐BAs are synthesized and measured at a room temperature thermal conductivity of 1500 W m−1 K−1 for the c‐11BAs. This value is the highest thermal conductivity among known semiconductor materials.
Jaehoon Kim, Dongwook Lee, Huan Wu, Joon Sang Kang   +3 more
wiley   +1 more source

Magnesium‐Mediated Electrochemical Synthesis of Ammonia

Advanced Science, EarlyView.
This study demonstrates a lithium‐free, magnesium‐mediated electrochemical process for converting nitrogen (N₂) to ammonia (NH₃) under mild conditions. Using abundant materials, the system achieves ≈27% Faradaic efficiency at lower voltages than Li‐ and Ca‐mediated systems.
Ishita Goyal, Vamsi V. Gande, Rajan R. Bhawnani, Rebecca Hamlyn, Ahmed A. Farghaly, Meenesh R. Singh   +5 more
wiley   +1 more source