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Structural characteristics of antibacterial bioresorbable phosphate glass
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Moss, Robert M., Pickup, David M., Ahmed, Ifty, Knowles, Jonathan C., Smith, Mark E. and Newport, Robert J. (2008) Structural characteristics of antibacterial bioresorbable phosphate glass. Advanced Functional Materials, Volume 18 (Number 4). pp. 634-639. doi:10.1002/adfm.200700721
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Official URL: http://dx.doi.org/10.1002/adfm.200700721
Abstract
Neutron diffraction with isotopic substitution has been used to probe the local environment of silver in a melt-quench derived bioresorbable phosphate glass. Samples enriched with Ag-107 and Ag-109 were prepared and neutron diffraction data collected. A first-order difference was taken between the data sets to give detailed information about the silver environment in the glass matrix. The measured Ag-O correlation has three components in the first coordination shell at 2.28 angstrom, 2.51 angstrom, and 2.58 angstrom with coordination numbers of 2.1,23, and 1.1, respectively, consistent with silver occupying a distorted octahedral environment. These results have been correlated with those from Ag K-edge X-ray absorption near-edge spectroscopy measurements. The results suggest that the addition of silver to the (CaO)(0.3)(Na2O)(0.2)(P2O5)(0.5) system has a significant effect on the host phosphate network, with shorter and more branched chains replacing the long chains and rings normally associated with the metaphosphate composition.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Administration > Vice Chancellor's Office Faculty of Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Polyphosphates, Silver -- Therapeutic use, Composite materials, Glass in medicine, Neutrons -- Diffraction, Biomedical materials | ||||
| Journal or Publication Title: | Advanced Functional Materials | ||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||
| ISSN: | 1616-301X | ||||
| Official Date: | 22 February 2008 | ||||
| Dates: |
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| Volume: | Volume 18 | ||||
| Number: | Number 4 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 634-639 | ||||
| DOI: | 10.1002/adfm.200700721 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Science and Technology Facilities Council (Great Britain) (STFC) | ||||
| Grant number: | EP/P502543, EP/C000714, EP/C00633/1, GR/T21080/01 (EPSRC), CMPC06103 (STFC) |
Data sourced from Thomson Reuters' Web of Knowledge
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