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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202107843
|2 doi
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|a eng
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1 |
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|a Bistervels, Marloes H
|e verfasserin
|4 aut
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| 245 |
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|a Light-Controlled Nucleation and Shaping of Self-Assembling Nanocomposites
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|c 2022
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 03.02.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Controlling self-assembly of nanocomposites is a fundamental challenge with exciting implications for next-generation advanced functional materials. Precursors for composites can be generated photochemically, but limited insight in the underlying processes has hindered precise hands-on guidance. In this study, light-controlled nucleation and growth is demonstrated for self-assembling composites according to precise user-defined designs. Carbonate is generated photochemically with UV light to steer the precipitation of nanocomposites of barium carbonate nanocrystals and amorphous silica (BaCO3 /SiO2 ). Using a custom-built optical setup, the self-assembly process is controlled by optimizing the photogeneration, diffusion, reaction, and precipitation of the carbonate species, using the radius and intensity of the UV-light irradiated area and reaction temperature. Exploiting this control, nucleation is induced and the contours and individual features of the growing composite are sculpted according to micrometer-defined light patterns. Moreover, moving light patterns are exploited to create a constant carbonate concentration at the growth front to draw lines of nanocomposites with constant width over millimeters with micrometer precision. Light-directed generation of local gradients opens previously unimaginable opportunities for guiding self-assembly into functional materials
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|a Journal Article
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|a crystallization
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|a nanocomposites
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|a nucleation
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|a patterning
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|a photodecarboxylation
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|a self-assembly
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1 |
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|a Kamp, Marko
|e verfasserin
|4 aut
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1 |
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|a Schoenmaker, Hinco
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Brouwer, Albert M
|e verfasserin
|4 aut
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1 |
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|a Noorduin, Willem L
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 5 vom: 21. Feb., Seite e2107843
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:34
|g year:2022
|g number:5
|g day:21
|g month:02
|g pages:e2107843
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|u http://dx.doi.org/10.1002/adma.202107843
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