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首页> 外文期刊>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 >Direct observation of multiple oxygen sites in oxide glasses: recent advances from triple-quantum magic-angle spinning nuclear magnetic resonance
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Direct observation of multiple oxygen sites in oxide glasses: recent advances from triple-quantum magic-angle spinning nuclear magnetic resonance

机译:直接观察氧化物玻璃中的多个氧位点:三量子魔角旋转核磁共振的最新进展

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Triple-quantum, magic-angle spinning nuclear magnetic resonance (3QMAS NMR) on O-17 has demonstrated remarkable improvements in resolution among signals from different oxide species in glasses. As many as four separate types of oxygen anion environments can be observed simultaneously in some compositions; Si-O-Si, Al-O-Al, B-O-B, Si-O-Al, Si-O-B, and Al-O-B bridging oxygens can be distinguished and at least roughly quantified; non-bridging oxygens bonded to Si vs. B can in some cases be separated, and there are hints of oxygen tricluster species. These types of data are already providing important new constraints and tests of models of glass structure and properties. Published by Elsevier Science B.V. [References: 30]
机译:O-17上的三量子幻角旋转核磁共振(3QMAS NMR)已显示出来自玻璃中不同氧化物物种的信号,其分辨率得到了显着提高。在某些成分中,可以同时观察到多达四种不同类型的氧阴离子环境。 Si-O-Si,Al-O-Al,B-O-B,Si-O-Al,Si-O-B和Al-O-B桥接氧可以被区分并至少被粗略地量化;在某些情况下,可以分离键合到Si与B上的非桥连氧,并暗示有氧三聚体。这些类型的数据已经为玻璃结构和性能模型提供了重要的新约束和测试。由Elsevier Science B.V.发布[参考:30]

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