Characterization of the disordered phosphate network in CaO-P _2O_5 glasses by ~(31)P solid-state NMR and Raman spectroscopies

Roiland C.; Fayon F.; Simon P.; Massiot D.

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Characterization of the disordered phosphate network in CaO-P _2O_5 glasses by ~(31)P solid-state NMR and Raman spectroscopies

机译：〜（31）P固态NMR和拉曼光谱表征CaO-P _2O_5玻璃中的无序磷酸盐网络。

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In this study, the disordered network of calcium phosphate glasses is investigated by Raman scattering and ~(31)P magic angle spinning (MAS) solid-state NMR spectroscopies. The use of both spectroscopies in a combined approach allows drawing a detailed understanding of the structure of these glasses. The P - O - P connectivity between successive PO_4 tetrahedra is probed using through-bond double quantum-single quantum (DQ-SQ) and triple quantum-single quantum (TQ-SQ) MAS NMR correlation experiments. Over the broad range of glass compositions studied here, two very different phosphate network topologies are encountered. The results obtained for the polyphosphate compositional range (above 50 mol% Ca) allow determining the phosphate chain-length distribution in the glass as a function of the modifier cation content. For the ultraphosphate region (below 50 mol% Ca), the network topology undergoes a sudden change close to 39 mol% Ca which can be interpreted in terms of a rigidity transition.

机译：在这项研究中，通过拉曼散射和〜（31）P幻角旋转（MAS）固态NMR光谱学研究了磷酸钙玻璃的无序网络。结合使用两种光谱学可以对这些玻璃的结构有详细的了解。使用连续键合双量子单量子（DQ-SQ）和三量子单量子（TQ-SQ）MAS NMR相关实验，探究了连续PO_4四面体之间的P-O-P连接性。在本文研究的玻璃组成的广泛范围内，遇到了两种非常不同的磷酸盐网络拓扑。对于多磷酸盐组成范围（高于50mol％Ca）获得的结果使得可以确定玻璃中磷酸盐链长度分布随改性剂阳离子含量的变化。对于超磷酸盐区域（低于50 mol％Ca），网络拓扑结构会发生突然变化，接近39 mol％Ca，这可以用刚性转变来解释。

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2011年第7期|共11页
作者
Roiland C.; Fayon F.; Simon P.; Massiot D.;
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正文语种 eng
中图分类非晶态和类晶态;
关键词
~(31)P solid-state NMR; Phosphate glasses; Raman spectroscopy;

机译：〜（31）P固态NMR;磷酸盐玻璃;拉曼光谱;

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1. Characterization of the disordered phosphate network in CaO-P _2O_5 glasses by ~(31)P solid-state NMR and Raman spectroscopies [J] . Roiland C., Fayon F., Simon P., Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 2011,第7期

机译：〜（31）P固态NMR和拉曼光谱表征CaO-P _2O_5玻璃中的无序磷酸盐网络。
2. Molybdenum modified phosphate glasses studied by P-31 MAS NMR and Raman spectroscopy [J] . Szumera Magdalena Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy . 2015,第Pta1期

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3. Structural investigations of silicate–phosphate glasses containing MoO_3 by FTIR, Raman and ~(31)P MAS NMR spectroscopies [J] . M. Szumera Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy . 2014,第Null期

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6. Characterizationof the Dynamics in the Protonic ConductorCsH2PO4 by 17O Solid-State NMR Spectroscopyand First-Principles Calculations: Correlating Phosphate and ProtonicMotion [O] . Gunwoo Kim, John M. Griffin, Frédéric Blanc, -1

机译：表征质子导体动力学17O固态NMR光谱分析CsH2PO4和第一性原理计算：磷酸盐和质子的相关性运动
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8. Dual-Mode Sorption of Tri-n-Butyl Phosphate in Polystyrene Studied via High-Resolution Solid-State Phosphorus 31-NMR Spectroscopy [R] . Toscano, P. J., Frisch, H. L. 1991

机译：高分辨率固态磷31-NmR谱研究聚苯乙烯中三正丁基磷酸酯的双模吸附

Characterization of the disordered phosphate network in CaO-P _2O_5 glasses by ~(31)P solid-state NMR and Raman spectroscopies

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