The structure evolution of colloidal aggregates composed of monodisperse silica nanospheres

Sun, Wei; Chen, Shengli; Zhu, Huili; Xu, Mingri; Wang, Ai‐Jun

doi:10.1016/j.jcis.2017.05.010

Cited by 6 publications

(6 citation statements)

References 26 publications

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“…Other terms currently in use do not specify a degree of order as required for supraparticles, such as “colloidal/nanoparticle aggregate”, ,,,, “colloidal/nanoparticle cluster”, ,,,, or “assembled colloids/nanoparticles”. ,, One may add adjectives such as “hierarchical”, “defined”, or “structured” or simply use the term “supraparticle”, as suggested above.…”

Section: Discussionmentioning

confidence: 99%

“…The building blocks of hierarchical structures are frequently referred to as “primary particles” that form “secondary particles”. ,,,, Consequently, higher leveled structures would have to be named “tertiary” or “quaternary” particles, which in fact is not uncommon. , Some authors consider the number of building blocks at different levels, for example, by using the terms “higher-order clusters”, “supraparticles”, or “supraballs” for objects comprising N < 100, 100 < N < 1000, or N > 1000 particles, respectively. ,, The majority of authors, however, use these terms only to classify a more concrete shape and/or a higher degree of order.…”

Section: Discussionmentioning

confidence: 99%

“…336−341 A recent definition by Blaaderen 342,343 uses "colloidal molecules" to denote a very specific form of particle agglomerates in which the number and position of subunits are precisely defined. 21,65,335,344,345 Other terms currently in use do not specify a degree of order as required for supraparticles, such as "colloidal/nanoparticle aggregate", 25,39,53,74,346 "colloidal/nanoparticle cluster", 39,65,67,96,334 or "assembled colloids/nanoparticles". 39,81,97 One may add adjectives such as "hierarchical", "defined", or "structured" or simply use the term "supraparticle", as suggested above.…”

Section: Discussionmentioning

confidence: 99%

“…348,349 Some authors consider the number of building blocks at different levels, for example, by using the terms "higher-order clusters", "supraparticles", or "supraballs" for objects comprising N < 100, 100 < N < 1000, or N > 1000 particles, respectively. 38,53,350 The majority of authors, however, use these terms only to classify a more concrete shape and/or a higher degree of order.…”

Section: Discussionmentioning

confidence: 99%

“…A literature search in Scopus and ISI Web of Knowledge yields only around 100 publications that explicitly use the wording of “supraparticles”. The term has been most often used for either particle systems comprising two or more types of nanoscale building blocks to form particles with complex nature − or for particles made from a single type of nanoparticle arranged into more complex structures. ,,,,− Many communities that make complex particles from subunits do not call them “supraparticles” and may not know of similar activities in other fieldsan issue that we attempt to overcome with this review.…”

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confidence: 99%

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Supraparticles: Functionality from Uniform Structural Motifs

et al. 2018

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Under the right process conditions, nanoparticles can cluster together to form defined, dispersed structures, which can be termed supraparticles. Controlling the size, shape, and morphology of such entities is a central step in various fields of science and technology, ranging from colloid chemistry and soft matter physics to powder technology and pharmaceutical and food sciences. These diverse scientific communities have been investigating formation processes and structure/property relations of such supraparticles under completely different boundary conditions. On the fundamental side, the field is driven by the desire to gain maximum control of the assembly structures using very defined and tailored colloidal building blocks, whereas more applied disciplines focus on optimizing the functional properties from rather ill-defined starting materials. With this review article, we aim to provide a connecting perspective by outlining fundamental principles that govern the formation and functionality of supraparticles. We discuss the formation of supraparticles as a result of colloidal properties interplaying with external process parameters. We then outline how the structure of the supraparticles gives rise to diverse functional properties. They can be a result of the structure itself (emergent properties), of the colocalization of different, functional building blocks, or of coupling between individual particles in close proximity. Taken together, we aim to establish structure-property and process-structure relationships that provide unifying guidelines for the rational design of functional supraparticles with optimized properties. Finally, we aspire to connect the different disciplines by providing a categorized overview of the existing, diverging nomenclature of seemingly similar supraparticle structures.

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