Reactions in Micellar Systems

Dwars, Torsten; Paetzold, Eckhard; Oehme, G.

doi:10.1002/chin.200606284

Cited by 44 publications

(59 citation statements)

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“…In current chemistry, the micelle method is classically used to get nanoparticles as largely described within the literature [29][30][31][32][33]. In this general context, the route for the synthesis of [Fe(R-trz) 3 ].X 2 SCO nanoparticles is illustrated in Figure 1.…”

Section: Experimental Choices and Protocolmentioning

confidence: 99%

Rational Control of Spin-Crossover Particle Sizes: From Nano- to Micro-Rods of [Fe(Htrz)2(trz)](BF4)

et al. 2016

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Abstract:The spin-crossover (SCO) materials based on iron (II) and triazole ligands can change their spin state under an external perturbation such as temperature, pressure or light irradiation, exhibiting notably large hysteresis in their physical properties' transitions. If these aspects are investigated for decades, it is only in the recent years that the design of SCO particles has attracted the attention of the scientific community with increasing interest focusing on the possibility of getting wide ranges of sizes and shapes of nanoparticles. In this context, we rationalized the reverse-micellar synthesis, thanks to the scrutiny of the experimental parameters, to produce SCO particles with controlled size and shape. This approach has been performed for the reference one-dimensional (1D) polymeric spin-crossover compound of formula [Fe(Htrz) 2 (trz)](BF 4 ). A synergetic effect of both time and temperature is revealed as being of paramount importance to control the final particle size. Consequently, under well-defined experimental conditions, we can now offer rod-shaped SCO particles with lengths ranging from 75 to 1000 nm.

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Section: Experimental Choices and Protocolmentioning

confidence: 99%

Rational Control of Spin-Crossover Particle Sizes: From Nano- to Micro-Rods of [Fe(Htrz)2(trz)](BF4)

et al. 2016

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“…In addition, aqueous micellar reactions systems find increasing attention as possible alternatives to chemical synthesis in organic solvents as they can have beneficial effects on reaction velocity and enantioselectivity (Dwars et al 2005). In this context, it is surprising that such systems have only sparsely been used to deliver hydrophobic substrates to enzymes (Viparelli and Alfani 1999).…”

Section: Introductionmentioning

confidence: 99%

Impact of surfactants on solubilization and activity of the carotenoid cleavage dioxygenase, AtCCD1, in an aqueous micellar reaction system

Schilling

Haetzelt

Schwab³

et al. 2007

Biotechnol Lett

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The effect of various surfactants on both the solubilization of the carotenoid cleavage dioxygenase, AtCCD1, from cell lysates and the enzymatic activity in an aqueous micellar system was investigated. Solubilization with sodium cholate more than doubled the specific activity. Lag phases were observed when Tween surfactants were used for substrate delivery and were dependent on the surfactant and enzyme modification. In contrast to His(6)- and GST-tagged AtCCD1, unmodified AtCCD1 showed a 45% increased maximum rate in the Tween 20 system compared to Triton X-100 based reference system. The results emphasize the importance of engineering the interface for the in vitro application of this enzyme family.

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“…It could offer the easy approach for separation of organic reagents from catalysts which were immobilized in aqueous phase [30][31][32]. From the viewpoint of green chemistry, the immobilization of nanocatalysts in an aqueous solution immiscible with the product phase (organic phase) represents an almost ideal combination of homogeneous and heterogeneous reaction processes.…”

Section: Introductionmentioning

confidence: 99%

Catalytic hydrogenation of aromatic nitro compounds by functionalized ionic liquids-stabilized nickel nanoparticles in aqueous phase: The influence of anions

Zhao

et al. 2010

Sci. China Chem.

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Two kinds of nickel nanoparticles (NPs) well-dispersed in aqueous phase have been conveniently prepared by reducing nickel(II) salt with hydrazine in the presence of amino group (NH 2 ) functionalized ionic liquids:The Ni(0) particles are composed of smaller ones which assemble in a blackberry-like shape. The Ni nanoparticles stabilized with [AMMIM][AcO] are much larger than those stabilized with [AMMIM] [Br], and the former unexpectedly give much higher activity in the selective hydrogenation of citral and nitrobenzene (NB) in aqueous phase. The Ni(0) nanocatalysts dispersed in aqueous phase are stable enough to be reused at least five times without significant loss of catalytic activity and selectivity during the catalytic recycles. functionalized ionic liquid, nickel nanoparticles, aqueous phase, selective hydrogenation

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Reactions in Micellar Systems

Abstract: For Abstract see ChemInform Abstract in Full Text.

Cited by 44 publications

References 1 publication

Rational Control of Spin-Crossover Particle Sizes: From Nano- to Micro-Rods of [Fe(Htrz)2(trz)](BF4)

Rational Control of Spin-Crossover Particle Sizes: From Nano- to Micro-Rods of [Fe(Htrz)2(trz)](BF4)

Impact of surfactants on solubilization and activity of the carotenoid cleavage dioxygenase, AtCCD1, in an aqueous micellar reaction system

Catalytic hydrogenation of aromatic nitro compounds by functionalized ionic liquids-stabilized nickel nanoparticles in aqueous phase: The influence of anions

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