The paper looks back at three decades of oscillatory carbonylation reactions, summarises core findings and shares perspectives, with particular emphasis on applications. Oscillatory carbonylation reactions of alkynes display remarkable versatility in terms of substrates, catalysts and solvents. Furthermore, in addition to oscillations in pH and redox potential, these organic chemical oscillators can yield oscillations in turbidity and release heat from the reaction in a pulsatile manner. Recent research developments shift attention from small molecule substrates ( phenylacetylene) and small molecule catalysts ( palladium(ii) iodide), to oscillatory carbonylation reactions using polymeric substrates ( PEGylated alkynes) and polymeric catalysts ( imine-functionalized chitosan-palladium) and use of these polymeric building blocks to develop oscillatory (pulsatile) materials fit for pulsatile drug release and other applications.
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http://dx.doi.org/10.1039/d1ra03810a | DOI Listing |
Ecotoxicol Environ Saf
October 2024
College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Xianyang 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China. Electronic address:
This study aims to investigate the effect of the combined method of freeze-thaw and leaching on the removal of cadmium (Cd) in soil and to provide a theoretical basis for the remediation of farmland soil polluted by heavy metals. The removal process and mechanism of Cd were deduced through oscillatory leaching experiments and freeze-thaw leaching simulation experiments, and the influence of the freeze-thaw leaching technology on the soil environment was evaluated. The results of oscillatory leaching showed that a mixture consisting of 0.
View Article and Find Full Text PDFChaos
July 2024
School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom.
This study explores the role of diffusion in creating instabilities in the Bruk Temkin-Gorodsky Novakovic (BT-GN) oscillatory carbonylation reaction network. Stoichiometric network analysis and numerical methods revealed the presence of two destabilizing feedback cycles responsible for these instabilities. Analysis of a spatially uniform system showed that the saddle-node bifurcation can be simulated within the reaction network.
View Article and Find Full Text PDFPolymers (Basel)
February 2024
School of Pharmacy, Queen's University of Belfast, 97, Lisburn Road, Belfast BT9 7BL, UK.
The study objective was to design and characterise herein unreported polyologels composed of a range of diol and triol solvents and polyvinyl methyl ether-co-maleic acid (PVM/MA) and, determine their potential suitability for the treatment of periodontal and related diseases in the oral cavity using suitable in vitro methodologies. Polyologel flow and viscoelastic properties were controlled by the choice of solvent and the concentration of polymer. At equivalent polymer concentrations, polyologels prepared with glycerol (a triol) exhibited the greatest elasticity and resistance to deformation.
View Article and Find Full Text PDFSci Rep
January 2023
Department of Pathology and Cell Regulation, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, 602-8566, Japan.
Although irreversible cardiomyocyte injury provokes intracellular Ca ([Ca]) overload, the underlying dynamics of this response and its effects on cellular morphology remain unknown. We therefore visualised rapid-scanning confocal fluo4-[Ca] dynamics and morphology of cardiomyocytes in Langendorff-perfused rat hearts following saponin-membrane permeabilisation. Our data demonstrate that 0.
View Article and Find Full Text PDFMaterials (Basel)
November 2022
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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