Application of fast amplitude-modulated pulse trains for signal enhancement in static and magic-angle-spinning 41,49Ti-NMR spectra

被引：15
作者：
Bräuniger, T
Madhu, PK
Pampel, A
Reichert, D
机构：
[1] Univ Halle, Dept Phys, NMR Grp, D-06108 Halle An Der Saale, Germany
[2] Tata Inst Fundamental Res, Dept Chem Sci, Bombay 400005, Maharashtra, India
[3] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany
来源：
SOLID STATE NUCLEAR MAGNETIC RESONANCE | 2004年 / 26卷 / 3-4期
关键词：
Ti-41; Ti-49-NMR spectroscopy; TiO2; BaTiO3; signal enhancement; SW-FAM pulses;
D O I：
10.1016/j.ssnmr.2004.02.003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is demonstrated that the use of fast amplitude-modulated RF pulse trains with constant (FAM-I) and incremented pulse durations (SW-FAM) leads to considerable sensitivity enhancement for the central-transition signal (via spin population transfer from the satellite transitions) for solid-state NMR spectra of titanium, Ti-47 (I = 5/2) and Ti-49 (I = 7/2). For the magic-angle spinning spectra of TiO2 and BaTiO3, the intensity of the Ti-49 central-transition line was more than doubled compared to simple Hahn-echo acquisition, while for the static case, enhancement factors of 1.6 (TiO2) and 1.8 (BaTiO3) were obtained. No lineshape distortions are observed in either MAS or static spectra of both compounds. Employment of the FAM and SW-FAM sequences should be useful in the routine acquisition of Ti-47,Ti-49 spectra, as the NMR signal can be detected much faster. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：114 / 120
页数：7
相关论文
共 29 条
[1]  
ABRAGAM A, 1961, PRINCIPLES NUCLEAR M, pCH6
[2]   SIMPSON: A general simulation program for solid-state NMR spectroscopy [J].
Bak, M ;
Rasmussen, JT ;
Nielsen, NC .
JOURNAL OF MAGNETIC RESONANCE, 2000, 147 (02) :296-330
[3]   137Ba and 47,49Ti NMR:: electric field gradients in the non-cubic phases of BaTiO3 [J].
Bastow, TJ ;
Whitfield, HJ .
SOLID STATE COMMUNICATIONS, 2001, 117 (08) :483-488
[4]   47,49Ti NMR:: hyperfine interactions in oxides and metals [J].
Bastow, TJ ;
Gibson, MA ;
Forwood, CT .
SOLID STATE NUCLEAR MAGNETIC RESONANCE, 1998, 12 (04) :201-209
[5]   AN NMR-STUDY OF BA-137 AND BA-47, TI-49 IN FERROELECTRIC BATIO3 [J].
BASTOW, TJ .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (30) :4985-4991
[6]   Enhancement of the central-transition signal in static and magic-angle-spinning NMR of quadrupolar nuclei by frequency-swept fast amplitude-modulated pulses [J].
Bräuniger, T ;
Ramaswamy, K ;
Madhu, PK .
CHEMICAL PHYSICS LETTERS, 2004, 383 (3-4) :403-410
[7]   Efficient 5QMAS NMR of spin-5/2 nuclei:: use of fast amplitude-modulated radio-frequency pulses and cogwheel phase cycling [J].
Bräuniger, T ;
Pike, KJ ;
Harris, RK ;
Madhu, PK .
JOURNAL OF MAGNETIC RESONANCE, 2003, 163 (01) :64-72
[8]   SOLID-STATE MULTINUCLEAR NMR-STUDIES OF FERROELECTRIC, PIEZOELECTRIC, AND RELATED MATERIALS [J].
DEC, SF ;
DAVIS, MF ;
MACIEL, GE ;
BRONNIMANN, CE ;
FITZGERALD, JJ ;
HAN, SS .
INORGANIC CHEMISTRY, 1993, 32 (06) :955-959
[9]   Multinuclear (27Al, 29Si, 47,49Ti) solid-state NMR of titanium substituted zeolite USY [J].
Ganapathy, S ;
Gore, KU ;
Kumar, R ;
Amoureux, JP .
SOLID STATE NUCLEAR MAGNETIC RESONANCE, 2003, 24 (2-3) :184-195
[10]   Solid-state 47,49Ti NMR determination of the phase distribution of titania nanoparticles [J].
Gervais, C ;
Smith, ME ;
Pottier, A ;
Jolivet, JP ;
Babonneau, F .
CHEMISTRY OF MATERIALS, 2001, 13 (02) :462-467
123