Results 61 to 70 of about 37,029 (225)

Discovery of Quinazolone Pyridiniums as Potential Broad-Spectrum Antibacterial Agents

Molecules
The overprescription of antibiotics in medicine and agriculture has accelerated the development and spread of antibiotic resistance in bacteria, which severely limits the arsenal available to clinicians for treating bacterial infections.
Jie Dai, Qianyue Li, Ziyi Li, Zhonglin Zang, Yan Luo, Chenghe Zhou   +5 more
doaj   +1 more source

Reversible Exfoliation‐Aggregation Dynamics in Ionic COFs for Tunable Interfacial Catalysis

Advanced Science, EarlyView.
A unique ionic covalent organic framework (I‐4) exhibits unprecedented concentration‐dependent dynamic behavior in water, undergoing reversible transitions between aggregation and exfoliation. This enables fully controllable, bidirectional modulation of its particle size and surface micro‐environment.
Jilu Yang, Xiaofei Zhang, Yue Li, Yuping Cao, Zhaowei Jia, Bo Li, Haitao Feng, Xiaoqiang Cui, Wenwu Qin   +8 more
wiley   +1 more source

Responsive Membrane Antenna Enables Adaptive Biohybrid Interface for Photosynthesis Promotion, Stress Reporting and Modulation

Advanced Science, EarlyView.
An environmentally responsive antenna assembled onto the algal cell membrane creates a biohybrid with a responsive interface that promotes photosynthesis under normal conditions and shifts to H2O2‐triggered stress reporting and modulation upon stress onset, boosting environmental sensing and adaptive response.
Bing Liu, Gongmeiyue Su, Jingyi Shi, Hang Yao, Yuchun Han, Zhao Li, Chengcheng Zhou   +6 more
wiley   +1 more source

Environmental Effects on RRAM Cells Based on 2D Halide Perovskite Materials

Advanced Electronic Materials, EarlyView.
RRAM offers high speed, scalability, and low power, positioning it as a next‐generation non‐volatile memory. Two‐dimensional halide perovskites show promise due to tunable optoelectronic properties and flexible processing but suffer from environmental sensitivity. This review examines degradation from humidity, temperature, light, and strain, discusses
Mojtaba Joodaki, Babitha Arun, Hartmut Hillmer, Chih‐Chieh Hsu   +3 more
wiley   +1 more source

Structure and Spectroscopic Characterisation of Phenanthroline‐Based Iodobismuthate(III) Complexes Utilised for Raw Acoustic Signal Classification

Advanced Intelligent Discovery, EarlyView.
Memristors based on trimethylsulfonium (phenanthroline)tetraiodobismuthate have been utilised as a nonlinear node in a delayed feedback reservoir. This system allowed an efficient classification of acoustic signals, namely differentiation of vocalisation of the brushtail possum (Trichosurus vulpecula).
Ewelina Cechosz, Gisya Abdi, Andrzej Sławek, Marlena Gryl, Konrad Szaciłowski   +4 more
wiley   +1 more source

Crystal structure of 4,4′-[(1,3,5,7-tetraoxo-1,3,3a,4,4a,5,7,7a,8,8a-decahydro-4,8-ethenopyrrolo[3,4-f]isoindole-2,6-diyl)bis(methylene)]bis(pyridin-1-ium) dinitrate

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title salt, C24H22N4O42+·2NO3−, the cation is U-shaped with the two isoindole dione rings inclined to one another by 60.41 (13)°, while the two outer pyridine rings are inclined to one another by 2.77 (12)°.
Zhimin Liu
doaj   +1 more source

Cooperative Al(Salen)-Pyridinium Catalysts for the Asymmetric Synthesis of <em>trans</em>-Configured β-Lactones by [2+2]-Cyclocondensation of Acylbromides and Aldehydes: Investigation of Pyridinium Substituent Effects

Molecules, 2012
The <em>trans</em>-selective catalytic asymmetric formation of β-lactones constitutes an attractive surrogate for <em>anti</em>-aldol additions.
René Peters, Katja Latendorf, Patrick Meier, Florian Broghammer, Guntram Rauhut   +4 more
doaj   +1 more source

New Constituents from the Korean Sponge Plakortis simplex

Marine Drugs, 2013
Six new cyclic peroxides (1–6) were isolated from the Korean sponge Plakortis simplex, along with two new alkylpyridinium alkaloids (7 and 8). The structures of these compounds were completely determined by a combination of NMR analysis and chemical ...
Ok-Hwa Kang, Buyng Su Hwang, Jung-Rae Rho, Dong-Yeul Kwon, Jung Soon Oh   +4 more
doaj   +1 more source

Pyridinium dichlorophosphinomethylides

Heteroatom Chemistry, 2001
AbstractSeven new pyridinium dichlorophosphinomethylides 2 have been obtained from dichlorophosphinylation of the pyridinium methylides generated in situ. 2 give 1,3‐bis(alkoxycarbonyl)‐2‐phosphaindolizines 4 through 1,5‐electrocyclization of the intermediate, bis(pyridinium ylidyl)phosphenium chloride 3 which is generated either from ...
Raj K. Bansal, Neelima Gupta, Mukta Baweja, Leena Hemrajani, Vimal K. Jain   +4 more
openaire   +1 more source

2-[5-(Pyridin-2-yl)-1,3,4-thiadiazol-2-yl]pyridin-1-ium perchlorate

IUCrData, 2017
The cation of the title molecular salt, C12H9N4S+·ClO4−, is approximately planar, with the pyridine and pyridinium rings being inclined to the central thiadiazole ring by 6.51 (9) and 9.13 (9)°, respectively.
Abdelhakim Laachir, Fouad Bentiss, Salaheddine Guesmi, Mohamed Saadi, Lahcen El Ammari   +4 more
doaj   +1 more source