Results 61 to 70 of about 51,903 (296)

Rare‐Earth–Sulfur Surface Modification Enables SiC Ceramics for Low‐Frequency Electromagnetic Wave Absorption in Extreme Environments

Advanced Science, EarlyView.
By altering surface chemical bonds to prolong relaxation time and shift absorption to lower frequencies, SiC/rare earth–sulfur (RE─S, RE = La, Ce, Pr, Sm, Gd, Er) materials achieve excellent low‐frequency electromagnetic wave absorption under extreme conditions, offering a new direction for designing high‐performance SiC‐based absorbers.
Zhanming Wu, Xiaojun Zeng, Yu‐Nan Tan, Chi Yu, Nuohua Xie, Yanfeng Gao   +5 more
wiley   +1 more source

PolyG Fibrils Coalesce Into Nuclear Ribbons That Engage Proteostasis Machinery in Neuronal Intranuclear Inclusion Disease

Advanced Science, EarlyView.
In NIID, expanded NOTCH2NLC repeats give rise to nuclear polyG inclusions. Tracer‐guided in situ cryo‐electron tomography enables cross‐scale structural analysis from mouse brain to native neuronal nuclei, revealing dense‐core/peripheral‐halo inclusions built from compact polyG ribbons.
Hui Dong, Yongcheng Pan, Zhiyao Tang, Yuxuan Yao, Guicong Zhang, Junpu Wang, Haonan Xiao, Yun Tian, Beisha Tang, Dan Li, Qiang Guo, Ruijun Tian, Qiong Liu, Cong Liu   +13 more
wiley   +1 more source

Unclicking of thioureas: Base catalyzed elimination of anilines and isothiocyanates from thioureas [PDF]

Tetrahedron, 2019
Bisaromatic thioureas are widely used in e.g. asymmetric organocatalysis and considered to be robust compounds. Herein we show, in strong contrast to common notion, that thioureas dissociate to amines and isothiocyanates in a base catalyzed reaction under mild conditions. This 'unclicking' process can occur in the presence of weak organic bases even at
Vlatkovic, Matea, Feringa, Ben L.
openaire   +1 more source

Highly Enantioselective Synthesis of Chiral Succinimides via Rh/Bisphosphine-Thiourea-Catalyzed Asymmetric Hydrogenation

, 2016
We have successfully developed a highly enantioselective hydrogenation of various 3-aryl and 3-methyl maleinimides to access enantiomerically pure 3-substituted succinimides catalyzed by Rh/bisphosphine-thiourea (ZhaoPhos).
Xumu Zhang (1447558), Qian Wang (32718), Zongpeng Zhang (2849087), Zhengyu Han (2849090), Pan Li (335711), Xiu-Qin Dong (1447549), Caiyou Chen (1986493)   +6 more
core   +1 more source

Facet‐Dependent Activity of Fe3S4 Crystal in Peroxydisulfate Activation for Organic Pollutants Degradation

Advanced Science, EarlyView.
Fe3S4 crystal with the exposed [001] facet exhibits higher catalytic activity for activating peroxydisulfate (PDS) to degrade clothianidin (CLO), which can be attributed to the dissolved Fe‐induced homogeneous catalytic process; while Fe3S4 crystal with the exposed [1‐21] facet exhibits excellent catalytic stability and durability, thereby boosting the
Jiaqu Tan, Min Yu, Jinfeng Wang, Dongya Li, Fan Yang, Yulong Zhang, Xueming Lin   +6 more
wiley   +1 more source

Synthesis, Characterization and Electrochemical Analysis of V-Shaped Disubstituted Thiourea-Chlorophyll Thin Film as Active Layer in Organic Solar Cells

International Journal of Electrochemical Science, 2013
Conjugated thiourea system has attracted considerable attention as potential molecular framework to construct molecular components for molecular electronics.
Rafizah Rahamathullal, Wan M. Khairul, Hasiah Salleh, Hasyiya Karimah Adli, M.I.N. Isa, Meng Guan Tay   +5 more
doaj   +1 more source

The Natural Product Corramycin Acts as a DNA Gyrase Poison and Overcomes Fluoroquinolone Resistance in Mycobacterium tuberculosis

Advanced Science, EarlyView.
Corramycin, a myxobacterial natural product antibiotic, exhibits potent bactericidal activity against multidrug‐resistant Mycobacterium tuberculosis. The compound hijacks bacterial transporters such as BacA and OppABCD to enter the cell and inhibits DNA synthesis through a previously unrecognized mode of DNA gyrase poisoning, locking the enzyme in an ...
Franziska Fries, Jennifer Herrmann, Michael Dal Molin, Yaëlle Wormser, Timo Risch, Yunsheng Gao, Gareth Prosser, Francesca Gubellini, Ariel Mechaly, Joshua B. Wallach, Anthony Castro, Arka Banerjee, Sari Rasheed, Alexander Horn, Mathias Müsken, Michael Kurz, Lindsay Sonnenkalb, Viola Dreyer, Stefan Niemann, Sönke Andres, Dirk Schnappinger, Uli Kazmaier, Norbert Reiling, Rolf Müller, Jan Rybniker, Stéphanie Petrella   +25 more
wiley   +1 more source

Unravelling the mechanism of thiourea-enabled N-heterocyclic carbene catalysis in dihydrocoumarin synthesis: A theoretical investigation

Results in Chemistry
A detailed density functional theory (DFT) investigation has been performed to explore the mechanism underlying the synthesis of functionalised dihydrocoumarin via [3 + 3] annulation of naphthoquinones and α, β unsaturated ketone and also to understand ...
Mahabrata Sengupta, Paritosh Mondal
doaj   +1 more source

The Amino Thiourea-Catalyzed Asymmetric Nucleophilic Reactions

CHIMIA, 2007
Bifunctional amino thiourea-catalyzed asymmetric additions of several nucleophiles into electron-deficient unsaturated compounds such as nitroolefins, ?,?-unsaturated imides, imines, and azodicarboxylates are described.
Yoshiji Takemoto, Hideto Miyabe
doaj   +1 more source

Thiourea-Induced N/S Dual-Doped Hierarchical Porous Carbon Nanofibers for High-Performance Lithium-Ion Capacitors

, 2020
Developing advanced carbon nanomaterials with reasonable pore distribution and interconnection and matching the charge-storage capacities and electrode kinetics between the capacitive electrode and the battery-type electrode are two of the biggest ...
Ying Yang (24175), TrungHieu Le (8350689), Yuanxiang Zhou (8350692), Ming Chen (115604), Feiyu Kang (789424)   +4 more
core   +1 more source