Results 101 to 110 of about 23,632 (231)

Mechanochromic Organic Materials: Molecular Mechanisms and Multidimensional Applications

open access: yesAdvanced Physics Research, Volume 5, Issue 2, February 2026.
Mechanochromic (MC) organic materials change color in response to mechanical force. This review elucidates the molecular mechanisms (e.g., aggregation‐induced emission, AIE) and explores their multidimensional applications in sensors, anti‐counterfeiting, biomedical devices, and structural health monitoring, providing a roadmap for future smart ...
Xiaozhe Yin   +5 more
wiley   +1 more source

Synthesis and biological activity study of tanshinone I-pyridinium salt derivatives

open access: yesNatural Products and Bioprospecting
Natural product tanshinone I exhibits weak potency and poor drug-like properties, which have restricted its clinical development as an anticancer agent.
Huimin Zhao   +9 more
doaj   +1 more source

Photocatalytic deaminative benzylation and alkylation of tetrahydroisoquinolines with N-alkylpyrydinium salts

open access: yesBeilstein Journal of Organic Chemistry, 2020
A ruthenium-catalyzed photoredox coupling of substituted N-aryltetrahydroisoquinolines (THIQs) and different bench-stable pyridinium salts was successfully developed to give fast access to 1-benzyl-THIQs.
David Schönbauer   +3 more
doaj   +1 more source

The role of onium salts in the oxidation of hydrocarbons by O2 catalysed by cationic phase-transfer reagents [PDF]

open access: yes, 2000
Experimental and theoretical evidence is presented that cationic phase-transfer catalysts promote the homolytic decomposition of hydroperoxide initiators into radicals, this being a fundamental step in the catalysis of the oxidation of hydrocarbons by O ...
Csányi, László J.   +4 more
core   +1 more source

New Compounds From the Deep‐sea Sponge Mycale lingua

open access: yesChemistry &Biodiversity, Volume 23, Issue 2, February 2026.
The focus of this study is the scarcely investigated sponge Mycale lingua, found commonly in the North Atlantic Ocean. In total, four compounds are isolated and characterised from three combined M. lingua individuals. Structures are fully elucidated through HR‐LCMS and NMR spectroscopy (1H, COSY, HSQC, HMBC).
H. Poppy Clark   +8 more
wiley   +1 more source

Symmetric Vs Asymmetric Imide Anion Decomposition Pathways And Their Influence On Solid Electrolyte Interphase Stability For Si Anodes

open access: yesAngewandte Chemie, Volume 138, Issue 4, 22 January 2026.
Symmetric bis(flourosulfonyl)imide anions in imidazolium‐based ionic liquids direct the formation of a conformal SEI on 3D a‐Si architecture, featuring an ionorganic‐rich (LiF/LiOH) inner and Li2SO4/polymeric outer layer. This anion‐derived, mechanically robust SEI suppresses pulverization and delivers a high reversible capacity of 2489 mAh g−1 at 1C ...
Abinaya Sankaran   +9 more
wiley   +2 more sources

Anthracene appended pyridinium amide–urea conjugate in selective fluorometric sensing of L-N-acetylvaline salt

open access: yesBeilstein Journal of Organic Chemistry, 2010
A new anthracene labeled pyridinium amide–urea conjugate 1 has been designed and synthesized. The receptor shows a different fluorometric response with L-N-acetylvaline and L-N-acetylalanine salts in CH3CN in contrast to the other salts of L-N-acetyl α ...
Kumaresh Ghosh   +2 more
doaj   +1 more source

Synthesis and Characterization of Quaternary Ammonium Salts Containing Carbonyl Functionality [PDF]

open access: yes, 2007
This study is mainly focused on the synthesis of quaternary ammonium salts (QASs) derived from long-chain ketones as starting materials. The procedure used in this study is an extension of a new procedure for the preparation of iodinated acetone ...
Salim, Norazlinaliza
core  

The Atomistic Force Field for Pyridinium-Based Ionic Liquids: Reliable Transport Properties

open access: yes, 2014
Reliable force field (FF) is a central issue in successful prediction of physical chemical properties via computer ...
Chaban, Vitaly V.   +1 more
core   +1 more source

Vibrational analysis of 1-methyl-pyridinium-2-aldoxime- and 1-methyl-pyridinium-4-aldoxime chloride [PDF]

open access: yes, 2011
Pyrimidinium aldoximes are administered in cases of acute organophosphate poisoning. Since questions regarding their morphology and active conformation in the solid state are still open, an effort was made to establish correspondence between their ...
Foretić, Blaženka   +2 more
core   +1 more source

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