A Practical Guide to Setting Up Diffusion Measurements
By Paul Ellis As an elder statesman in the area of solid state NMR spectroscopy, it has become obvious that pulsed field gradients (PFG) experiments are and will continue to be important in the future. Our liquid state colleagues have enjoyed the benefits of PFG for many years. For example, PFG can remove artifacts within the transverse plane and hence reduce the number scans needed to complete a phase cycle. Likewise, PFG can be utilized to select coherences in experiments, again ...
Access Sample Temperatures to 250 ºC in a Narrow Bore Wideline Probe!
To illustrate the capability of a novel 3 mm H/X wideline narrow bore probe with extended VT range, we performed a variable temperature experiment on Pb(NO3)2 over the temperature range from -110 °C to +250 °C. Those data are summarized in figure below. The first thing that is apparent is the isotropic chemical shift is changing as a function of temperature. These data match the well-known temperature dependence reported by Bielecki and Burum (JMR 1995). Secondly, comparing the powder lineshape ...
Small and Large MRI RF Research Coils for Mice, Rats, Rabbits, Primates…
Shielded 1H and 1H/C dual-frequency coils are available. Open platforms with removable shields are also available. The following larger 3T coils are available with quick delivery: Click for more Information. 1H/13C 27.5 cm dia x 26.5 cm lgth 1H 18 cm dia x 18.5 cm lgth 1H 16 cm dia x 18.5 cm lgth Any of these coils may be double-tuned (1H/f), where f is a fixed frequency. Our research “Knee” or “Head” ...
Total Eclipse at Doty Scientific 8-21-2017
Solar Photos by Rochelle Doty at Doty Scientific. (Note the moon outline in photo 2.) Solar Photos by Vince Cothran at Doty Scientific. The day was perfect... but the 93 degree weather made canopies a must, and a large fan helped too. We want to thank Vince Cothran for the fine solar projector he made. It was a real ...
ENC 2017: MAS with Magic-Angle-Gradients and 1H-19F/X/Y/Z MAS
We will be headed to the ENC in a few days. We hope to see you there. Our suite Toyon will be open Sunday-Wednesday from 7:00 PM to 11:30 PM. (There will be icecream!) We will be presenting information about our new 4 channel 1H-19F/X/Y/Z MAS probe, and Bibhuti Das will be presenting a poster on design and applications of our Magic-Angle-Spinning Magic-Angle-Gradient (MAS-MAG) probe. For more details please see our poster Low-E Inverse Detection MAS Probe and ...
Dramatic Advances in NMR of Insoluble Proteins
Dramatic Advances in NMR of Insoluble Proteins 3Hz 1H linewidth on solid protein GB1. This 1H spectrum was taken at 500 MHz with 2H decoupling using our 1H/X/Y/Z MAS probe. The region shown is for methyl protons with 2H decoupling and water suppression. Linewidths at half maximum are shown in Hz. (Note the major linewidth reduction from 10-kHz 2H decoupling.) Bibhuti Das and Paul Ellis, Doty Scientific, Inc., and Professor Leonard Mueller, Univ. of CA ...
SERMACS/Doty Scientific Facility Tour
Doty Scientific had a tour our NMR facility on Tuesday October 25th. This activity was planned in coordination with the Southeastern Regional Meeting of ACS (SERMACS) in Columbia SC, in October, 2016. We provided lunch, a short presentation, plus a tour of the plant and our NMR Lab.
