1993 Fiscal Year Final Research Report Summary
Development of High-Resolution NMR of Quadrupolar Nuclei and Trial Construction of the Spectrometer
| Project/Area Number |
03504002
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
物理化学一般
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| Research Institution | KOYOTO UNIVERSITY |
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Principal Investigator |
TERAO Takehiko Kyoto Univ., Science, Professor, 理学部, 教授 (50093274)
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| Co-Investigator(Kenkyū-buntansha) |
FUJITO Teruaki Analytical Research Manager Instruments, & Development, 分析機器技術本部, 課長
YOSHIMURA Kazuyoshi Kyoto Univ., Science, Associate Professor, 理学部, 助教授 (70191640)
KUBO Atushi Kyoto Univ., Science, Instructor, 理学部, 助手 (20205115)
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| Project Period (FY) |
1991 – 1993
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| Keywords | quadrupolar nuclei / high-resolution solid-state NMR / DAS-NMR |
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| Research Abstract |
1. A DAS-NMR-system was developed.
2. A computer program for the pulse sequence of DAS-NMR, control of a motor system, and data manipulation, and also a simulation program of one-and two-dimensional spectra were developed to obtain and analyze experimental spectra.
3. It was confirmed by carrying out DAS-NMR for ^<23>Na in Rochelle salt that the NMR system normally works. A resolution of 120 Hz was obtained by using proton decoupling.
4. A simple and sensitive DAS-NMR method was developed which allows us to observe pure-absorption two-dimensional spectra.
5. A new high-resolution NMR spectroscopy of quadrupolar nuclei was proposed which uses ultrasonic sound for dispersing powder in liquid and violently disturbing the particles, It was confirmed from a ^1H NMR study that linewidths become narrower by mixing glass particles.
6. A method by which two-dimensional powder spectra for quadrupolar nuclei can be observed between two different spinning orientations was developed, and successfully applied to ^<27>Al of Rochelle salt.
7. Details of static and dynamic behaviors of the guest molecules in beta-cyclodextrin/ferrocene and cholic acid/gamma-valerolactone inclusion compounds were studied by measuring temperature dependence of ^<13>C chemical shift powder patterns of the guest molecules using SASS spectroscopy.
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