Results 51 to 60 of about 5,865 (290)

Coordination‐Tuned Iridium Single‐Atom Nanozymes Boost Multienzyme Activity for Colorimetric Sensing

Advanced Science, EarlyView.
Breaking the coordination symmetry of Ir single‐atom sites through asymmetric Ir–N3S1 engineering tailors interfacial electron transfer, oxygen activation, and multienzyme‐like catalytic pathways. Operando spectroscopy and theoretical modeling uncover the atomic‐level origin of activity enhancement, providing a strategy for designing multifunctional ...
Tao Li, Xinyu Zhang, Jiashan Xia, Mengyu Wu, Cong Liu, Yapei Sun, Wanjiang Zhao, Min Qian, Wei Wang, Weixia Duan, Shangcheng Xu   +10 more
wiley   +1 more source

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

Synthesis and catalytic activity of fluorous chiral primary amine-thioureas

, 2013
Three enantiopure fluorous thioureas featuring a free -NH2 group were synthesized by direct addition of aromatic isothiocyanates bearing a single n-C8F17 substituent in the ortho, meta and para position, respectively, to enantiopure (1R,2R)-1,2 ...
S. Orlandi, M. Ghisetti, G. Pozzi, M. Benaglia   +3 more
core   +1 more source

Insertion of Arynes into Thioureas: A New Amidine Synthesis

, 2016
Arynes, generated from trimethylsilyl phenyltriflate precursors, have been found to react with thioureas via a formal π-insertion into the CS bond. The reaction contrasts with that of ureas, which proceeds via benzyne σ-insertion into the C–N bond, and ...
Michael F. Greaney (1299891), Kallolmay Biswas (1960024)   +1 more
core   +3 more sources

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

Gold(I) and Silver(I) Complexes Containing Hybrid Sulfonamide/Thiourea Ligands as Potential Leishmanicidal Agents

Pharmaceutics
Leishmaniasis is a group of parasitic diseases with the potential to infect more than 1 billion people; however, its treatment is still old and inadequate.
Alice P. Borges, Malu M. S. Obata, Silvia H. Libardi, Rafael O. Trevisan, Victor M. Deflon, Ulrich Abram, Francis B. Ferreira, Luiz Antônio S. Costa, Antonio O. T. Patrocínio, Marcos V. da Silva, Júlio C. Borges, Pedro I. S. Maia   +11 more
doaj   +1 more source

New Facile Synthesis of Adamantyl Isothiocyanates

SynOpen, 2017
A series of adamantyl isothiocyanates containing different substituents in the nodal positions of adamantane or spacers between the adamantane and isothiocyanate group have been synthesised by using the reaction of the corresponding adamantyl amines with
Vladimir Burmistrov, Dmitry Pitushkin, Gennady Butov   +2 more
doaj   +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

The Synthesis of Some Pyrimidinyl and Thiazolyl Ureas and Thioureas and Some Related Compounds

, 1988
Some pyrimidin-2- and pyrimidin-4-amines were treated with isocyanates and isothiocyanates to give the corresponding disubstituted ureas or thioureas . A pyrimidin-2-amine is more reactive than a pyrimidin-4- amine in these reactions.
DT Hurst, MR Harnden, M Nethercleft, AD Stacey, A Rahim   +4 more
core   +1 more source

Acoplamiento molecular y actividad antibacteriana de las tioureas (R,R)-N,N´-bis(1-ciclohexiletil)tiourea y (R,R)-N,N´-bis(1-feniletil)tiourea

Avances en Biomedicina, 2013
Las tioureas, son compuestos resultantes de sustituir el átomo de oxígeno de la urea (NH2CONH2) por un átomo de azufre (NH2CSNH2). Actualmente se ha visto que las tioureas presentan diversas actividades biológicas, dentro de las que se encuentra la ...
Fabían Martínez Flores, José Jaime Vázquez Bravo, Juan Saulo González González, Julio Hernández Rosas, Veronica Castro Bear, Oscar Zuñiga Lemus   +5 more
doaj