Spatial programming of self-organizing chemical systems using sustained physicochemical gradients from reaction, diffusion and hydrodynamics

Nguindjel, Anne‐Déborah C.; Visser, Pieter de; Winkens, Mitch; Korevaar, Peter A.

doi:10.1039/d2cp02542f

Cited by 17 publications

(14 citation statements)

References 182 publications

(222 reference statements)

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“…There is wide research interest in the development and creation of micro/nanomotors [1][2][3][4][5][6][7] due to their numerous application perspectives in medicine, [8][9][10][11][12][13][14][15][16][17] biosensing, 18 and engineering. 19 The motors move due to either the transformation of fuel chemical energy into kinetic energy, 20,21 or the action of magnetic, [22][23][24][25][26][27][28][29][30] electric 31 and acoustic 32 fields or light.…”

Section: Introductionmentioning

confidence: 99%

Pattern formation and collective effects during the process of the motion of magnetic nanomotors in narrow channels

Kichatov

Korshunov

Sudakov

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Pattern formation and collective effects during the process of the motion of magnetic nanomotors in narrow channels

Kichatov

Korshunov

Sudakov

et al. 2023

Phys. Chem. Chem. Phys.

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“…The extraordinary complexity of biomineralized architectures demonstrates the possibilities for organizing a limited number of simple minerals into a wide diversity of highly refined, multifunctional, three-dimensional (3D) shapes. − Inspired by biomineralization processes, many synthetic self-organization strategies have been developed to produce artificial complexly shaped 3D architectures. ,− Already, a large diversity of intricately shaped 3D forms can be formed during the bioinspired coprecipitation of metal carbonate nanocrystals (MCO 3 , with M = Ba 2+ , Sr 2+ , or Ca 2+ ) and amorphous silica (SiO 2 ) (Figure A). ,, These bioinspired nanocomposites self-organize into highly complex, yet controllable, 3D shapes such as vases, stems, helices, and coral-like forms that can be further sculpted and patterned by modulating the global reaction conditions. In addition, local control over CO 2 concentrations using photodecarboxylation enables the steering of the self-organization process to yield metal carbonate silica nanocomposites according to exact user-defined light patterns …”

Section: Introductionmentioning

confidence: 99%

Architected Metal Selenides via Sequential Cation and Anion Exchange on Self-Organizing Nanocomposites

2023

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Shape-preserving conversion reactions have the potential to unlock new routes for self-organization of complex threedimensional (3D) nanomaterials with advanced functionalities. Specifically, developing such conversion routes toward shapecontrolled metal selenides is of interest due to their photocatalytic properties and because these metal selenides can undergo further conversion reactions toward a wide range of other functional chemical compositions. Here, we present a strategy toward metal selenides with controllable 3D architectures using a two-step self-organization/ conversion approach. First, we steer the coprecipitation of barium carbonate nanocrystals and silica into nanocomposites with controllable 3D shapes. Second, using a sequential exchange of cations and anions, we completely convert the chemical composition of the nanocrystals into cadmium selenide (CdSe) while preserving the initial shape of the nanocomposites. These architected CdSe structures can undergo further conversion reactions toward other metal selenides, which we demonstrate by developing a shapepreserving cation exchange toward silver selenide. Moreover, our conversion strategy can readily be extended to convert calcium carbonate biominerals into metal selenide semiconductors. Hence, the here-presented self-assembly/conversion strategy opens exciting possibilities toward customizable metal selenides with complex user-defined 3D shapes.

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“…The out-of-equilibrium phenomena that emerge from gradients, assemblies and motile droplets [48][49][50] prompted us to explore a combination of these concepts, using dissipating droplets at an air-water interface that are subject to mechanical forces mediated by self-assembled filaments. Concurrently, a chemical reaction sustains a concentration gradient around the dissipative droplet, which in turn impacts said mechanical forces.…”

Section: Introductionmentioning

confidence: 99%

Orbiting self-organization of filament-tethered surface-active droplets

Winkens

Vilcan

Visser

et al. 2022

Preprint

Self Cite

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Dissipative chemical systems operate outside of equilibrium, and hold potential to enable life-like behavior in synthetic matter, such as self-organization, motility, and dynamic switching between different states. Here, out-of-equilibrium self-organization is demonstrated at an air-water interface, enabled by amphiphile filaments that self-assemble from source droplets and tether to pivalic anhydride-based drain droplets, which are surrounded by a pivalic acid gradient due to their hydrolysis. The coupling of chemical gradients, self-assembly and Marangoni flow due to release and depletion of amphiphiles at the air-water interface generates a unique orbiting of drain droplets around the source droplet. This orbiting is proposed to be driven by the selective adhesion of filaments to the front of the moving drain, while filaments approaching the drain from behind are destabilized upon contact with the asymmetrical gradient of pivalic acid. The motion sustains itself to complete multiple rotations, ending when the depletion of amphiphiles at the drain, which drives the Marangoni flow towards the drain, becomes too weak to attract new filaments. Potential applications are foreseen in rearranging networks for dynamic transfer of chemical signals amongst interconnected droplets, and the implementation of dissipative chemical reactions in self-organizing systems as a strategy towards life-like behavior is highlighted.

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Spatial programming of self-organizing chemical systems using sustained physicochemical gradients from reaction, diffusion and hydrodynamics

Abstract: We highlight four different concepts that can be used as a design principe to establish self-organization using chemical reactions as a driving force to sustain gradients: reaction–diffusion, reaction–convection, Marangoni flow and diffusiophoresis.

Cited by 17 publications

References 182 publications

Pattern formation and collective effects during the process of the motion of magnetic nanomotors in narrow channels

Pattern formation and collective effects during the process of the motion of magnetic nanomotors in narrow channels

Architected Metal Selenides via Sequential Cation and Anion Exchange on Self-Organizing Nanocomposites

Orbiting self-organization of filament-tethered surface-active droplets

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