Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm)
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimAmorphous intermediate phases are vital precursors in the crystallization of many biogenic minerals. While inherent short-range orders have been found in amorphous calcium carbonates (ACCs) relating to different crystalline forms, it has never bee...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Wiley-VCH Verlag
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/52935 |
| _version_ | 1848759048009154560 |
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| author | Sun, S. Chevrier, D. Zhang, P. Gebauer, Denis Cölfen, H. |
| author_facet | Sun, S. Chevrier, D. Zhang, P. Gebauer, Denis Cölfen, H. |
| author_sort | Sun, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimAmorphous intermediate phases are vital precursors in the crystallization of many biogenic minerals. While inherent short-range orders have been found in amorphous calcium carbonates (ACCs) relating to different crystalline forms, it has never been clarified experimentally whether such orders already exist in very small clusters less than 2 nm in size. Here, we studied the stability and structure of 10,12-pentacosadiynoic acid (PCDA) protected ACC clusters with a core size of ca. 1.4 nm consisting of only seven CaCO3 units. Ligand concentration and structure are shown to be key factors in stabilizing the ACC clusters. More importantly, even in such small CaCO3 entities, a proto-calcite short-range order can be identified but with a relatively high degree of disorder that arises from the very small size of the CaCO3 core. Our findings support the notion of a structural link between prenucleation clusters, amorphous intermediates, and final crystalline polymorphs, which appears central to the understanding of polymorph selection. |
| first_indexed | 2025-11-14T09:53:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-52935 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:53:41Z |
| publishDate | 2016 |
| publisher | Wiley-VCH Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-529352018-03-29T09:09:13Z Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) Sun, S. Chevrier, D. Zhang, P. Gebauer, Denis Cölfen, H. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimAmorphous intermediate phases are vital precursors in the crystallization of many biogenic minerals. While inherent short-range orders have been found in amorphous calcium carbonates (ACCs) relating to different crystalline forms, it has never been clarified experimentally whether such orders already exist in very small clusters less than 2 nm in size. Here, we studied the stability and structure of 10,12-pentacosadiynoic acid (PCDA) protected ACC clusters with a core size of ca. 1.4 nm consisting of only seven CaCO3 units. Ligand concentration and structure are shown to be key factors in stabilizing the ACC clusters. More importantly, even in such small CaCO3 entities, a proto-calcite short-range order can be identified but with a relatively high degree of disorder that arises from the very small size of the CaCO3 core. Our findings support the notion of a structural link between prenucleation clusters, amorphous intermediates, and final crystalline polymorphs, which appears central to the understanding of polymorph selection. 2016 Journal Article http://hdl.handle.net/20.500.11937/52935 10.1002/anie.201604179 Wiley-VCH Verlag restricted |
| spellingShingle | Sun, S. Chevrier, D. Zhang, P. Gebauer, Denis Cölfen, H. Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title | Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title_full | Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title_fullStr | Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title_full_unstemmed | Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title_short | Distinct Short-Range Order Is Inherent to Small Amorphous Calcium Carbonate Clusters (<2 nm) |
| title_sort | distinct short-range order is inherent to small amorphous calcium carbonate clusters (<2 nm) |
| url | http://hdl.handle.net/20.500.11937/52935 |