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Investigation of Lead Borosilicate Glass Structure With 207Pb and 11B Solid-State NMR

Published online by Cambridge University Press:  18 March 2011

James M. Gibson ,
Frederick G. Vogt ,
Amy S. Barnes  and
Karl T. Mueller
James M. Gibson
Affiliation:
Department of Chemistry, The Pennsylvania State University152 Davey Laboratory, University Park, PA 16802-6300
Frederick G. Vogt
Affiliation:
Department of Chemistry, The Pennsylvania State University152 Davey Laboratory, University Park, PA 16802-6300
Amy S. Barnes
Affiliation:
Department of Chemistry, The Pennsylvania State University152 Davey Laboratory, University Park, PA 16802-6300
Karl T. Mueller
Affiliation:
Department of Chemistry, The Pennsylvania State University152 Davey Laboratory, University Park, PA 16802-6300
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Abstract

A series of three lead borosilicate glasses were synthesized and analyzed for structural information with both 11B and 207Pb solid-state nuclear magnetic resonance (NMR) spectroscopic methods. Results showed that increasing lead content caused lead to take a more active role in the network as a former and that the populations in these sites can be approximately quantified. 207Pb phase-adjusted-spinning sidebands (PASS), 11B magic-angle spinning (MAS), and 11B multiple-quantum MAS (MQMAS) experiments were used to determine structural parameters for the two nuclei. The 207Pb PASS experiment showed that at higher lead content, more covalent bonding was present. This principle was demonstrated in both an overall shift of the spectral resonances and a quantitative change in site ratios. The 11B MAS experiment showed that the ratio of BO3 to BO4 units was dependent on the amount of lead and boron, consistent with previous studies. Preliminary 11B MQMAS experiments failed to detect any BO3– units, previously hypothesized to exist in this system.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 658: Symposium GG – Solid-State Chemistry of Inorganic Materials III , 2000 , GG3.22
Copyright
Copyright © Materials Research Society 2001

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