The Bruker AVANCE300 NMR spectrometer is a wide bore (89mm), high resolution, solid NMR spectrometer operating at a magnetic field strength of 7 T (1H frequency is 300MHz). It has the following features:

• Dedicated to solid NMR.
• Probes:
• 4 mm Bruker Double Resonance Broadband (BB) MAS Probe with the spinning speed up to 15 kHz. This probe has a HF splitter box offering 19F observe and decoupling capabilities. The nuclei for the BB channel cover the range of 31P-15N. Therefore, nuclei 1H, 31P, 87Rb, 13C, 29Si, 2H, 17O, 14N, 15N, and others with frequency inbetween 31P-15N can be observed (see NMR Periodic Table).
• 2.5 mm Bruker Double Resonance Broadband (BB) MAS Probe which spins up to 35 kHz. The high spinning benifits in particular the experiments requiring the average of large CSA, dipolar coupling (especially that between 19F-19F, 1H-19F, or occasionally 1H-1H) and quodrupolar coupling in favorable cases. The other features are the same as the 4mm MAS probe above, of which the HF splitter box is worth of mentioning. It gives the probe 19F observe and decoupling functionality.
• 4 mm Bruker 1H/X/Y Triple Resonance Double Broadband (DBB) MAS Probe, spinning rate up to 15kHz. This probe is especially useful in studying structural connectivities, either through bond or through space, and even exact distance between two nuclei X-Y, such as 31P-27Al, 31P-71Ga, 71Ga-27Al, 13C-29Si, 13C-15N, etc., in a variety of materials.
• For more details of individual nucleis, please see:
  • NMR Frequecy
  • NMR Periodic Table
  • Properties of Nuclei
• Temperature Range:
  • 4 mm MAS Probe: -150°C to +300°C.
  • 2.5 mm MAS Probe: -50°C to +80°C.
• Sample Size:
  • 4 mm MAS Probe: 50 to 100 mgs
  • 2.5 mm MAS Probe: 10 to 20 mgs
• Samples:
  • from nanoparticles to zeolites to membranes
  • from lipids to liquid crystals to gels
  • from rubbers to plastcs to coals
  • from organic to inorganic to biomolecules
  • etc.
• Applications: Structure, Dynimics, Physical Properties Measurement, etc.
• Experiments:
  • 19F Spectroscopy:
    • 19F observe with or without 1H decoupling
    • 19F observe with or without X decoupling
    • 19F decoupling while observing 1H or X
    • 19F involved triple resonance experiments, such as REDOR
  • Varible Temperature Experiments (see temerature ranges above for the probes)
  • 1D Spectroscopy:
    • Standard CPMAS, HPDEC, BD, etc.
    • 13C-Editting for Multiplicity Discrimination
    • Relaxation Measurement, Chemical Exchange, other Physical Properties' Measurement, etc.
  • 2D Correlation:
    • Homonuclear Correlation: Spin Diffusion, RFDR, ...
    • Heteronuclear Correlation: HETCOR,...
    • Other Correlation: MQMAS,...
  • Distance Measurement:
    • Homonuclear: R2, Draws, C7, etc.
    • Heteronuclear: Redor, Tedor, etc.

• Phone: (805)967-7914
• email(jghu@mrl.ucsb.edu)

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