Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica

The assembly of colloids under directional interactions is a powerful way to create 1D chain-like structures (colloidal polymers). However, these colloidal polymers usually disassociate into separate colloids when the surrounding conditions are changed, and additional solidification treatments are r...

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Autores principales:	Simin Huang, Zhen Li, Liang Gao, Hongbing Gao, Zhanwen Xu, Jiaping Lin, Chunhua Cai
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	iron oxide cube colloidal assembly colloidal polymer TEOS silica solidification Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/895ce2aedd3e4a1b8205e1789973462b
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spelling	oai:doaj.org-article:895ce2aedd3e4a1b8205e1789973462b2021-11-12T04:48:23ZColloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica2666-542510.1016/j.giant.2021.100083https://doaj.org/article/895ce2aedd3e4a1b8205e1789973462b2022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666542521000369https://doaj.org/toc/2666-5425The assembly of colloids under directional interactions is a powerful way to create 1D chain-like structures (colloidal polymers). However, these colloidal polymers usually disassociate into separate colloids when the surrounding conditions are changed, and additional solidification treatments are required. Herein, we report an in situ welding of colloidal polymers simultaneous with assembly process in solution. When dispersed in a solution containing trace amounts of water, iron oxide dipolar cubes self-associate into chains, and the simultaneous in situ hydrolysis-condensation of tetraethylorthosilicate welds these chains into permanent colloidal polymers. With low water contents, the 1D colloidal assembly is directed by self-induced dipolar interactions via the step-growth mechanism, and the water content has no significant effect on the assembly process but changes the silica shell thickness on the colloidal polymers. With higher water contents, 2D and 3D structures are formed due to the nondirectional attraction of the water on the colloids.Simin HuangZhen LiLiang GaoHongbing GaoZhanwen XuJiaping LinChunhua CaiElsevierarticleiron oxide cubecolloidal assemblycolloidal polymerTEOSsilicasolidificationScience (General)Q1-390ENGiant, Vol 9, Iss , Pp 100083- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	iron oxide cube colloidal assembly colloidal polymer TEOS silica solidification Science (General) Q1-390
spellingShingle	iron oxide cube colloidal assembly colloidal polymer TEOS silica solidification Science (General) Q1-390 Simin Huang Zhen Li Liang Gao Hongbing Gao Zhanwen Xu Jiaping Lin Chunhua Cai Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
description	The assembly of colloids under directional interactions is a powerful way to create 1D chain-like structures (colloidal polymers). However, these colloidal polymers usually disassociate into separate colloids when the surrounding conditions are changed, and additional solidification treatments are required. Herein, we report an in situ welding of colloidal polymers simultaneous with assembly process in solution. When dispersed in a solution containing trace amounts of water, iron oxide dipolar cubes self-associate into chains, and the simultaneous in situ hydrolysis-condensation of tetraethylorthosilicate welds these chains into permanent colloidal polymers. With low water contents, the 1D colloidal assembly is directed by self-induced dipolar interactions via the step-growth mechanism, and the water content has no significant effect on the assembly process but changes the silica shell thickness on the colloidal polymers. With higher water contents, 2D and 3D structures are formed due to the nondirectional attraction of the water on the colloids.
format	article
author	Simin Huang Zhen Li Liang Gao Hongbing Gao Zhanwen Xu Jiaping Lin Chunhua Cai
author_facet	Simin Huang Zhen Li Liang Gao Hongbing Gao Zhanwen Xu Jiaping Lin Chunhua Cai
author_sort	Simin Huang
title	Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
title_short	Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
title_full	Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
title_fullStr	Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
title_full_unstemmed	Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica
title_sort	colloidal polymers of iron oxide cubes prepared by dipolar-driven assembly and in situ welding with silica
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/895ce2aedd3e4a1b8205e1789973462b
work_keys_str_mv	AT siminhuang colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT zhenli colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT lianggao colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT hongbinggao colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT zhanwenxu colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT jiapinglin colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica AT chunhuacai colloidalpolymersofironoxidecubespreparedbydipolardrivenassemblyandinsituweldingwithsilica
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Colloidal Polymers of Iron Oxide Cubes Prepared by Dipolar-Driven Assembly and In Situ Welding with Silica

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