File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

조재필

Cho, Jaephil
Nano Energy Storage Material Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.citation.endPage 121 -
dc.citation.number 2 -
dc.citation.startPage 109 -
dc.citation.title SOLID STATE NUCLEAR MAGNETIC RESONANCE -
dc.citation.volume 8 -
dc.contributor.author Hwang, SJ -
dc.contributor.author Fernandez, C -
dc.contributor.author Amoureux, JP -
dc.contributor.author Cho, Jaephil -
dc.contributor.author Martin, SW -
dc.contributor.author Pruski, M -
dc.date.accessioned 2023-12-22T12:37:40Z -
dc.date.available 2023-12-22T12:37:40Z -
dc.date.created 2014-07-29 -
dc.date.issued 1997-04 -
dc.description.abstract Two-dimensional multiple-quantum magic angle spinning (MQMAS) NMR and MAS NMR of B-11 at various magnetic fields, were applied to elucidate the structure of vitreous (glassy) boron trioxide (v-B2O3), vitreous boron trisulfide (v-B2S3) and crystalline boron trisulfide (c-B2S3). These techniques, when combined with computer simulations of the resulting spectra, provide the isotropic chemical shifts and the quadrupole parameters, as well as a quantitative measure of the intensities of various boron resonances. The MAS NMR of v-B2O3 produced overlapping anisotropic lineshapes corresponding to the -1/2 <-> 1/2 transition in two distinct types of BO3 units with 3(+/-0.08):1 intensity ratio. A combination of MAS and the multiple-quantum method resulted in a better resolved, isotropic B-11 spectrum of v-B2O3. A remarkable enhancement of resolution of the MQMAS NMR proved instrumental in finding and identifying various impurities present in V-B2S3 and c-B2S3. In addition to the resonances from boron in two types of BS, groups, four other structural units, BOS,, BO2S, BO3 and BS4, were elucidated from the spectra of vitreous and crystalline samples. The effects of various experimental parameters, such as the magnitude of the B-0 and B-1 fields, on the resolution of the MAS and MQMAS techniques are also shown. -
dc.identifier.bibliographicCitation SOLID STATE NUCLEAR MAGNETIC RESONANCE, v.8, no.2, pp.109 - 121 -
dc.identifier.doi 10.1016/S0926-2040(96)01280-5 -
dc.identifier.issn 0926-2040 -
dc.identifier.scopusid 2-s2.0-0031106972 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5341 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0031106972 -
dc.identifier.wosid A1997XF17800004 -
dc.language 영어 -
dc.publisher ACADEMIC PRESS INC ELSEVIER SCIENCE -
dc.title Quantitative study of the short range order in B2O3 and B2S3 by MAS and two-dimensional triple-quantum MAS B-11 NMR -
dc.type Article -
dc.description.journalRegisteredClass scopus -

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.