Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses

S. Prabakar; K. T. Mueller

Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses

S. Prabakar, K. T. Mueller

Chemistry

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The correlation between ³¹P and ²³Na (or ¹³³Cs) nuclei in a mixed-alkali phosphate glass has been investigated by TRAnsfer of Populations by DOuble Resonance (TRAPDOR) NMR spectroscopy. The variation in spatial proximity between ³¹P nuclei in phosphate tetrahedra and sodium (or cesium) modifier ions has been demonstrated in a phosphate glass with molar composition 25 Cs₂O: 31 Na₂O: 44P₂O₅. Interactions between ³¹P and ²³Na (or ¹³³Cs) nuclei are shown to exist even at low dephasing times indicating the short-range nature of these couplings. The ratios of resonance intensities from Q¹ and Q² phosphate units show different trends depending on whether couplings to ²³Na or ¹³³Cs are investigated, demonstrating the differing structural roles of the modifier alkali cations within the glass.

Original language	English (US)
Pages (from-to)	GG3201-GG3206
Journal	Materials Research Society Symposium - Proceedings
Volume	658
State	Published - 2001
Event	Solid - State Chemistry of Inorganic Materials III - Boston, MA, United States Duration: Nov 27 2000 → Nov 30 2000

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses",

abstract = "The correlation between 31P and 23Na (or 133Cs) nuclei in a mixed-alkali phosphate glass has been investigated by TRAnsfer of Populations by DOuble Resonance (TRAPDOR) NMR spectroscopy. The variation in spatial proximity between 31P nuclei in phosphate tetrahedra and sodium (or cesium) modifier ions has been demonstrated in a phosphate glass with molar composition 25 Cs2O: 31 Na2O: 44P2O5. Interactions between 31P and 23Na (or 133Cs) nuclei are shown to exist even at low dephasing times indicating the short-range nature of these couplings. The ratios of resonance intensities from Q1 and Q2 phosphate units show different trends depending on whether couplings to 23Na or 133Cs are investigated, demonstrating the differing structural roles of the modifier alkali cations within the glass.",

author = "S. Prabakar and Mueller, {K. T.}",

note = "Funding Information: KTM is an Alfred P. Sloan Research Fellow. This report is based upon work carried out with support from the National Science Foundation under Grant No. DMR-9458053 and with support from the Research Corporation (Cottrell Scholar Award to KTM).; Solid - State Chemistry of Inorganic Materials III ; Conference date: 27-11-2000 Through 30-11-2000",

year = "2001",

language = "English (US)",

volume = "658",

pages = "GG3201--GG3206",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

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TY - JOUR

T1 - Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses

AU - Prabakar, S.

AU - Mueller, K. T.

N1 - Funding Information: KTM is an Alfred P. Sloan Research Fellow. This report is based upon work carried out with support from the National Science Foundation under Grant No. DMR-9458053 and with support from the Research Corporation (Cottrell Scholar Award to KTM).

PY - 2001

Y1 - 2001

N2 - The correlation between 31P and 23Na (or 133Cs) nuclei in a mixed-alkali phosphate glass has been investigated by TRAnsfer of Populations by DOuble Resonance (TRAPDOR) NMR spectroscopy. The variation in spatial proximity between 31P nuclei in phosphate tetrahedra and sodium (or cesium) modifier ions has been demonstrated in a phosphate glass with molar composition 25 Cs2O: 31 Na2O: 44P2O5. Interactions between 31P and 23Na (or 133Cs) nuclei are shown to exist even at low dephasing times indicating the short-range nature of these couplings. The ratios of resonance intensities from Q1 and Q2 phosphate units show different trends depending on whether couplings to 23Na or 133Cs are investigated, demonstrating the differing structural roles of the modifier alkali cations within the glass.

AB - The correlation between 31P and 23Na (or 133Cs) nuclei in a mixed-alkali phosphate glass has been investigated by TRAnsfer of Populations by DOuble Resonance (TRAPDOR) NMR spectroscopy. The variation in spatial proximity between 31P nuclei in phosphate tetrahedra and sodium (or cesium) modifier ions has been demonstrated in a phosphate glass with molar composition 25 Cs2O: 31 Na2O: 44P2O5. Interactions between 31P and 23Na (or 133Cs) nuclei are shown to exist even at low dephasing times indicating the short-range nature of these couplings. The ratios of resonance intensities from Q1 and Q2 phosphate units show different trends depending on whether couplings to 23Na or 133Cs are investigated, demonstrating the differing structural roles of the modifier alkali cations within the glass.

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M3 - Conference article

AN - SCOPUS:17144446620

SN - 0272-9172

VL - 658

SP - GG3201-GG3206

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Solid - State Chemistry of Inorganic Materials III

Y2 - 27 November 2000 through 30 November 2000

ER -

Solid-state NMR investigation of mixed-alkali distribution in phosphate glasses

Abstract

All Science Journal Classification (ASJC) codes

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