Posts by cridenour

PMAS Controller a Hit with Customers!

July 30th, 2020 Posted by Products No Comment yet

We love that our customers love our products! Thanks to David Halat and Chad Rienstra (NMRFAM, @NMRFAM) for their thoughtful appreciation of the careful, scientific design approach that goes into all our products at PhoenixNMR. Your science is in our hearts, and we are happy to see you back in the lab.

The PhoenixNMR Magic-angle Spinning Controller (PMAS Controller) is intelligent, just like you. And that’s why you appreciate PMAS in your laboratory. This controller thinks like you do and works with you:

  • Spin up and down and control speed purely in automated mode ; or
  • Start a difficult sample in manual mode, then switch to automated mode while spinning ;
  • Spinning profiles for PhoenixNMR spinning modules are programmed into the device, but you are not limited there;
  • Easily create your own spinning profiles for any MAS probe that you want to control with this device;
  • Is the tachometer connection to your probe unique? Contact PhoenixNMR to ask about tachometer adaptors for your probe.
  • It is time to have a controller that thinks and adapts like you do!

New! 900 MHz Data from 1.6mm HFXY PhoenixNMR Probe

May 29th, 2020 Posted by PhoenixNMR, Products, Technology No Comment yet

Below: aliphatic region of the 2D CC spectrum of 15N, 13C labeled alpha-synuclein protein monomer seeded from a brain tissue sample (250 ms CORD mixing), acquired at 900 MHz 1H field at the National Magnetic Resonance Facility at Madison (NMRFAM, @NMRFAM) , utilizing a PhoenixNMR HFXY probe fitted with a 1.6mm module and PhoenixNMR speed controller (PMAS).

The PhoenixNMR HFXY probe was operated in double resonance mode at MASS = 20 kHz; mixing time = 250 ms; total time to acquire spectrum = 20 hrs using 4 blocks of 1024 rows each; 8 acquisitions per row; pulse delay = 1.5 s; CORDxy4 recoupling plus SPINAL decoupling.

Expansion of 900 MHZ CC Aliphatic Correlation Data NMRFAM
Expansion of a Near-Diagonal Region of the 2D CC spectrum
Second Expansion of 900 MHZ CC Aliphatic Correlation Data NMRFAM
A second Expansion of a near-diagonal region of the 2D CC Spectrum. Note the excellent lineshape provided by the PhoenixNMR probe demonstrated by both of these expansions.

Data courtesy Prof. Chad M. Rienstra, Dr. Marco Tonelli and Dr. Dwaipayan Mukhopadhyay. Data were acquired at the National Magnetic Resonance Facility at Madison ( NMRFAM, @NMRFAM). This 900 MHz SSNMR instrument and probe are available for use at NMRFAM by any scientist worldwide.

For more information about the PhoenixNMR HFXY Probe or PMAS Controller:

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Phoenix NMR Announces Our MAS-DNP Probe

January 3rd, 2020 Posted by Products No Comment yet

Phoenix DNP Probe

Dynamic Nuclear Polarization (DNP) signal-enhancement capability is now available in combination with innovative Phoenix Solid-State NMR (SSNMR) probe technology to expand the scope and sensitivity of biomolecular and materials SSNMR research at 400-600 MHz. The new Phoenix MAS-DNP probe system utilizes the same robust, professional design strategy that scientists have come to expect in all Phoenix SSNMR probes and accessories.

Phoenix DNP probe and equipment
PhoenixNMR DNP probe system, showing: a) PhoenixNMR WB HFXY probe, b) PhoenixNMR MAS speed controller, c) PhoenixNMR cryogenic VT and sample insert/eject controller, d) Bridge12 Technologies cryogenic counter-flow heat exchanger. Not shown: 50-liter LN2 Dewar.
Phoenix NMR DNP Enhancement 13C Proline
13C CP/MAS DNP enhancement of 77:1 was measured using a PhoenixNMR 395 GHz/600 MHz DNP HFXY probe fitted with a 2.5 mm spinning module. Sample Temperature = 124 K; MASS = 10 kHz. The sample was prepared using 10 mM AMUPol biradical and “DNP Juice” = d8-Glycerol/H2O/D2O at a 6/3/1 ratio.

Overview of the Phoenix DNP Innovation

  • Add a new Phoenix DNP probe to expand capability on an existing DNP SSNMR instrument; or
  • Add a Turn-key DNP System, including gyrotron, to an existing 9.4 – 14.1 T, Wide-Bore SSNMR instrument, pairing the robust Phoenix NMR probe technology with Bridge12 Technologies components to complete the DNP package;
  • Combine DNP with HFXY and HFX probe configurations;
  • Optional Probe Accessories allow low-gamma nuclei and/or simultaneous H/F operation;
  • Operating Temperature Range is 90 K to 373 K (actual sample temperature is dependent on spinning speed);
  • 2.5 mm MASS Module is available for spinning speeds up to 25 kHz;
  • Insert and Eject Samples In-Situ at cold and warm temperatures;
  • Modest up-front Costs beat other commercially-available DNP probe systems;
  • Unique VT Design minimizes the use of cryogens to dramatically reduce operational costs.