Chemically Derived BN Ceramics: Extensive 11B and 15N Solid-State NMR Study of a Preceramic Polyborazilene
Chemically Derived BN Ceramics: Extensive 11B and 15N Solid-State NMR Study of a Preceramic Polyborazilene
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DOI：
10.1021/cm001244l
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发表时间：
2001-05
影响因子：
8.6
通讯作者：
C. Gervais;J. Maquet;F. Babonneau;C. Duriez;E. Framery;M. Vaultier*;P. Florian;D. Massiot
中科院分区：
文献类型：
--
作者：
C. Gervais;J. Maquet;F. Babonneau;C. Duriez;E. Framery;M. Vaultier*;P. Florian;D. Massiot
聚硼氮烯是一种六方氮化硼（h-BN）陶瓷的前驱体，已被广泛地用15 N和11B MAS NMR表征。各种B和N位点已经根据它们的第一相邻原子以及在15 N的情况下的第二相邻原子来识别，并且也已经被量化。这项研究表明，一个合适的选择NMR技术连同同位素富集的使用可以导致光谱分辨率的大幅度提高，这使得更好地了解这种复杂的BN陶瓷前体聚合物结构。
Polyborazilene, a precursor for hexagonal boron nitride (h-BN) ceramics, has been extensively characterized by 15N and 11B MAS NMR. The various B and N sites have been identified according to their first neighboring atoms as well as to the second ones in the case of 15N and have also been quantified. This study demonstrates that a suitable choice of NMR techniques together with the use of isotopic enrichment can lead to a large improvement in spectral resolution, which allows better understanding of such complex BN preceramic polymer structures.