Micelle catalysed conversion of ‘on water’ reactions into ‘in water’ one

Acharjee, Animesh; Rakshit, Atanu; Chowdhury, Suman; Saha, Bidyut

doi:10.1016/j.molliq.2020.114897

Cited by 24 publications

(8 citation statements)

References 101 publications

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“…These studies may be much trickier than they appear as it is not straightforward that the reactions will occur either in the micelle or in the bulk; they could occur in both phases [92]. Suitable thermodynamic and/or kinetic models will be needed to correctly analyze these complicated equilibria [93]. The pseudo-phase ion-exchange (PIE) model is a widely applied extension of the pseudo-phase model (PP) and supposes that: (i) water and micelle are two separate phases in which the reactants are distributed with very fast kinetics; (ii) the reaction in the micellar pseudo phase occurs mainly at the micelle surface; (iii) charged inert ions may compete at the charged micellar surface but the association degree of counter ions remains constant.…”

Section: Metal Complexes Speciation In Amphiphilic Mediamentioning

confidence: 99%

Quantitative Analysis of the Interactions of Metal Complexes and Amphiphilic Systems: Calorimetric, Spectroscopic and Theoretical Aspects

et al. 2022

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Metals and metal-based compounds have many implications in biological systems. They are involved in cellular functions, employed in the formation of metal-based drugs and present as pollutants in aqueous systems, with toxic effects for living organisms. Amphiphilic molecules also play important roles in the above bio-related fields as models of membranes, nanocarriers for drug delivery and bioremediating agents. Despite the interest in complex systems involving both metal species and surfactant aggregates, there is still insufficient knowledge regarding the quantitative aspects at the basis of their binding interactions, which are crucial for extensive comprehension of their behavior in solution. Only a few papers have reported quantitative analyses of the thermodynamic, kinetic, speciation and binding features of metal-based compounds and amphiphilic aggregates, and no literature review has yet addressed the quantitative study of these complexes. Here, we summarize and critically discuss the recent contributions to the quantitative investigation of the interactions of metal-based systems with assemblies made of amphiphilic molecules by calorimetric, spectrophotometric and computational techniques, emphasizing the unique picture and parameters that such an analytical approach may provide, to support a deep understanding and beneficial use of these systems for several applications.

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Section: Metal Complexes Speciation In Amphiphilic Mediamentioning

confidence: 99%

Quantitative Analysis of the Interactions of Metal Complexes and Amphiphilic Systems: Calorimetric, Spectroscopic and Theoretical Aspects

et al. 2022

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“…In recent years, more and more organic transformations, ranging from acid-catalysed, base-catalysed to transition metal-catalysed reactions, have been successfully transferred to aqueous media with the aid of micellar catalysis, making a great contribution to the field of green and sustainable chemistry. 10–17…”

Section: Introductionmentioning

confidence: 99%

Cu-catalysed Chan–Lam synthesis of unsymmetrical aryl chalcogenides under aqueous micellar conditions

et al. 2023

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“…Catalysis in water under micellar conditions [19] is a direct evolution of catalysis in water or on water, [20] in which surfactants are added to cope between the low solubility of organic reagents and metal catalysts. [21] Micelles and specifically many other aggregation systems provide self-assembled nanoenvironments and nanoreactors [22] in which higher local concentration, peculiar solvation properties and unique features are possible (Figure 1), [23] for chemical as well as photochemical transformations. [24] Surfactant aggregates are morphologically reminiscent of nanoparticles, in terms of radial organization, but with a much less defined structure.…”

Section: Introductionmentioning

confidence: 99%

“…Confinement effects are also gaining momentum in catalysis, in particular under the point of view of sustainable chemical transformations, [18] due to the peculiar features that the control of the second solvation sphere of the catalyst can provide. Catalysis in water under micellar conditions [19] is a direct evolution of catalysis in water or on water, [20] in which surfactants are added to cope between the low solubility of organic reagents and metal catalysts [21] . Micelles and specifically many other aggregation systems provide self‐assembled nano‐environments and nanoreactors [22] in which higher local concentration, peculiar solvation properties and unique features are possible (Figure 1), [23] for chemical as well as photochemical transformations [24] .…”

Section: Introductionmentioning

confidence: 99%

Nanoconfinement Effects of Micellar Media in Asymmetric Catalysis

et al. 2022

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Replacement of organic solvents, in particular chlorinated, aromatic, and polar aprotic ones, is an emerging issue that can find a solution in the development of catalytic reactions in water. Nature performs a multitude of chemical transformations in water under mild conditions mediated by enzymes. In particular the nanoconfinement effects of the enzymes ensure high activity and impressive stereoselectivities. Micellar catalysis is nowadays a real alternative approach to catalysis in traditional organic media, enabling good activity under mild conditions, with the advantage of possible catalyst and micellar medium recycling. Micellar media emerged also as good nano‐environments for stereoselective reactions, with many examples of chemical transformations mediated by metal and organo‐catalysts for which improvements of stereoselectivity were observed with respect to the same reaction under homogeneous conditions in traditional organic solvents. More specifically, both the catalytically active site and the micelles provided by the surfactant can contribute to the asymmetric induction, partially resembling what known in terms of stereoselectivity imparted by the active site of enzymes and metallo‐enzymes.

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Micelle catalysed conversion of ‘on water’ reactions into ‘in water’ one

Cited by 24 publications

References 101 publications

Quantitative Analysis of the Interactions of Metal Complexes and Amphiphilic Systems: Calorimetric, Spectroscopic and Theoretical Aspects

Quantitative Analysis of the Interactions of Metal Complexes and Amphiphilic Systems: Calorimetric, Spectroscopic and Theoretical Aspects

Cu-catalysed Chan–Lam synthesis of unsymmetrical aryl chalcogenides under aqueous micellar conditions

Nanoconfinement Effects of Micellar Media in Asymmetric Catalysis

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