Results 71 to 80 of about 60,247 (222)

Supramolecular Allostery Achieves Tunable Luminescence Aromatic Bridged Phenothiazine Noncovalent Frameworks

open access: yesAdvanced Science, EarlyView.
Tunable luminescent supramolecular organic framework enabled by multiple allosteric effects, composed of a tetracation vinylphenylpyridinium‐modified aromatic‐bridged phenothiazine guest and cucurbit[8]uril, not only exhibits unique guest oxidation‐driven NIR luminescence blue‐shift and effectively enhances the quantum yield by 46‐fold to 22.2% but ...
Xinping Lu, Jianchong Chen, Jie Yu
wiley   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Discovery of Quinazolone Pyridiniums as Potential Broad-Spectrum Antibacterial Agents

open access: yesMolecules
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   +5 more
doaj   +1 more source

Metal-Free Aziridination of Unactivated Olefins via Transient N-Pyridinium Iminoiodinanes [PDF]

open access: yes
We describe a metal-free aziridination of unactivated olefins to generate N-pyridinium aziridines, which participate in cross-coupling to afford N-aryl aziridines and reductive depyridylation to afford N–H aziridines.
Isaac, Deavenport   +5 more
core   +2 more sources

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

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Investigation of the Pyridinium Ylide—Alkyne Cycloaddition as a Fluorogenic Coupling Reaction

open access: yesMolecules, 2016
The cycloaddition of pyridinium ylides with alkynes was investigated under mild conditions. A series of 13 pyridinium salts was prepared by alkylation of 4-substituted pyridines.
Simon Bonte   +4 more
doaj   +1 more source

Disinfection effect of hexadecyl pyridinium chloride on SARS-CoV-2 in vitro

open access: yesIntervirology, 2022
The novel coronavirus (COVID-19 or 2019-nCoV) is a respiratory virus that can exist in the mouth and saliva of patients and spreads through aerosol dispersion.
Ke-da Chen   +7 more
doaj   +1 more source

Synthesis and studies on pyridinium pentafluorozirconate and pyridinium oxotetrafluoroniobate

open access: yes, 1994
Pyridinium pentafluorozirconate, (C5H5NH)ZrF5, and pyridinium oxotetrafluoroniobate, (CH5NH)NbOF4, have been synthesised by the reaction of pyridinium poly(hydrogen fluoride), PPHF, with ZrOCl2 and Nb2O5, respectively.
D.K. Padma   +3 more
core   +1 more source

Pyridinium ylids in heterocyclic synthesis

open access: yes, 2011
Pyridinium ylids are versatile tools in organic synthesis. The stability of pyridinium ylids and their generation is commented. This review gives an overview of the possible modes through which pyridinium ylids can react.
Jan Jacobs   +7 more
core   +1 more source

Comparative photodynamic inactivation of bioluminescent E. coli by pyridinium and inverted pyridinium chlorins [PDF]

open access: yes, 2020
Photodynamic inactivation (PDI) is a therapeutic approach in study due to the ability to reduce or completely eliminate the bacterial strains without the development of resistance mechanisms.
Lourenço, Leandro M.O.   +6 more
core   +1 more source

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