Non-Spinning NMR Probes

DOTY Non spinning SOLIDS Probes


1. For Round coil, wideline probes

4, 5, 7, 8, or 10 mm coil sizes.

Many tuning options, including H-F/X/Y.

Low cost “deuterium only” probes.

VT range up to –170/+250°C.

2H Quad Echo data on a JEOL ECA600 and a Doty 2H Wideline  Probe tuned for Use at 9.4, 11.7, and 14.1 T. The times above indicate relaxation delay. The probe is tunable to 2H at 400, 500, or 600 MHz 1H freq.  Courtesy of Michael Frey, JEOL USA.

2H Quad Echo data on a JEOL ECA600 and a Doty 2H Wideline
Probe tuned for Use at 9.4, 11.7, and 14.1 T.
The times above indicate relaxation delay.
The probe is tunable to 2H at 400, 500, or 600 MHz 1H freq.
Courtesy of Michael Frey, JEOL USA.

2. For Rectangular, flat-coil probes, for aligned sample films on glass plates

Variable angle option allows housing to rotate over 90 degrees.
Fixed housing option allows highest RF field strength.
Coil dimensions customized for your application.

Available in 1H or 1H/X.

Doty flat coil probe with variable angle housing.

Doty flat coil probe with variable angle housing.

3. Goniometer probes for single crystal NMR.

Available with 4 mm sample cube.

High Resolution Option:   0.015 ppm FWHM for suitable single crystal in susceptibility-matched liquid medium inside High Resolution cell.

 

DOTY Wideline Probes for Non-Spinning Solid State NMR

The wide range of available options offers the versatility you need .

  • Standard sizes: 5 mm, 7 mm, 8 mm, or 10 mm sample diameter (Wide-bore or Narrow-bore probe) ; other sizes may be considered upon request.
  • VT ranges:
    – 80°C to 120°C standard VT for Narrow-Bore
    -160°C to 200°C, extended VT for Narrow-Bore

    – 110°C to 150°C standard VT for Wide-Bore
    -170°C to 250°C, extended VT for Wide-Bore

  •  Double resonance with multinuclear observe
  •  Triple resonance
  • RF tuning options:  1H/X, 1H-19F/X, 1H/X/Y, 1H-19F/X/Y; 2-3 μs 90 degree pulses available for 4 and 5 mm coil sizes.  Tuning for low γ nuclei is no problem!
  • Low cost “deuterium-only” probe available.
  • For narrow-bore and wide-bore magnets.
  • Your probe is delivered with ten sample containers and 20 plug caps (for standard sizes).

Below: 2H Quad Echo data on a Jeol ECA600 and a
Doty 2H Wideline Probe tuned for use at 9.4T, 11.7T and 14.1T.

The times above indicate relaxation delay.  The probe is tunable to 2H at 400, 500, or 600 MHz 1H freq.  Courtesy of Dr. Michael Frey, JEOL USA.

The times above indicate relaxation delay.
The probe is tunable to 2H at 400, 500, or 600 MHz 1H freq.
Courtesy of Dr. Michael Frey, JEOL USA.

Below: 76.7 MHz 2H powder Spectrum Dimethyl Sulfone.

This spectrum was obtained using a 500 MHz WB Doty Wideline Probe and a Varian Unity +. Courtesy of Dr. Dave Rice, Applications Chemist, Varian NMR

This spectrum was obtained using a 500 MHz WB Doty Wideline Probe and a Varian Unity +.
Courtesy of Dr. Dave Rice, Applications Chemist, Varian NMR

High-Resolution Flatcoil Probes For Multi-X NMR of Biological Solids

In solid state NMR spectroscopy of stationary, aligned samples, uniaxial orientation provides a mechanism of line-narrowing that retains both the distance and angular information.

Application of proteins and lipids onto glass plates, followed by pressure and shear, results in a very high degree of molecular orientation. This allows for improved structure determinations of macro-molecules using solid-state methods.

DOTY flatcoil probes have :

  • Susceptibility-matched coil and housing material for 10 times better resolution and lineshape at all angles, 0.07 ppm FWHM.
  • Highest filling factor, B1 homogeneity, S/N, Q, and B1 magnitude with oriented membrane samples between glass plates..
  • 1H-19F and 19F/X  tuning options with 4 µs  π/2-pulses.
  • 19F background signals can be minimized to nearly undetectable levels.
  • Coil dimensions customized for your application.  Ceramic coilform and housing ensure lowest thermal gradients and stable tuning.
  • Wide VT range: -100 to +140°C.
  • Easy sample loading and coil cleaning
  • Flat coil probe available for all bore sizes (with fixed orientation housing).
  • Variable angle option available for widebore probes only.

Variable Angle Option

Quickly change from parallel to magic-angle to perpendicular alignment without removing the probe form the magnet .

The following pictures show a variable angle flat coil probe at orientations
(from left to right): 0 degrees, Magic Angle, and 90 degrees.

comp-variable-angle

Examples of B1 homogeneity from Doty flat-coil probes in the field:

1H/X 600 MHz wide-bore flat-coil probe, fixed housing,
with 5x10x10 mm sample coil:

Pulse-width array for 1H (single pulse) on H2O/D2O.  Pulses varied from 1 μs, with 2 μs increments using 100 W 1H power.

Pulse-width array for 1H (single pulse) on H2O/D2O. Pulses
varied from 1 μs, with 2 μs increments using 100 W 1H power.

1H/X 600 MHz wide-bore flatcoil probe, fixed housing, 2.5x7x10 mm sample coil:

Pulse-width array for 15N (after CP) on 15N labeled glycine.   Pulse varied from 1 μs, with 1 μs increments using 1 kW 15N power.

Pulse-width array for 15N (after CP) on 15N labeled glycine.
Pulse varied from 1 μs, with 1 μs increments using 1 kW 15N power.

1H/ 19F 500 MHz wide-bore flatcoil probe with
Variable Angle Housing, 2.5x9x10 mm sample coil:

The nearly constant signal intensity with increasing flip angle shows the exceptional B1 homogeneity of the loop gap flat coil for 1H/ 19F.

The nearly constant signal intensity with increasing flip angle shows the exceptional B1 homogeneity of the loop gap flat coil for 1H/ 19F.

wp ecommerce - e-commerce wordpress