Dear Rajan,
I am not a liquid state expert. However, I use MISSISSIPI for solvent/water
suppression in 1H detected solid state NMR quite a bit.
Please take a look at Donghua and Chad’s paper.
(1) Zhou, D. H.; Rienstra, C. M. High-performance solvent suppression for
proton detected solid-state NMR.
Journal of Magnetic Resonance 2008, 192 (1), 167-172. DOI: https://doi.org/10.1016/j.jmr.2008.01.012.
With kind regards,
Rıza
-------------------------
Rıza Dervişoğlu, Ph.D.
NMR Lab. Coordinator at Wiegand Lab.,
Max Planck Institute for Chemical Energy Conversion,
working at ITMC, RWTH, Aachen,
Tel.: +49 (0) 241 80 26429
Address:
SB Chemie
Room: 38B-031
Worringerweg 2
52074 Aachen, Germany
https://mpi-cec.webex.com/meet/riza.dervisoglu
https://www.linkedin.com/in/rizadervisoglu/
ride_at_cec.mpg.de
> On 16Feb, 2024, at 20:28, Hansen, Alex <hansen.434_at_osu.edu> wrote:
>
> If the shim is good enough, you could try the 'noesypr1d' experiment. This
> works reasonably well on my 80MHz without gradients.
>
> Alex
>
>
>
> Dr Alexandar L Hansen <https://osu.academia.edu/AlexandarHansen>
> Lead Research Scientist
> CCIC & Gateway NMR Facility
> R381 CBEC, 151 W Woodruff Ave, Columbus, OH 43210
> 614.292.7133 Office / 716.341.8476 Mobile
> hansen.434_at_osu.edu <mailto:hansen.434_at_osu.edu> ccic.ohio-state.edu <http://ccic.ohio-state.edu/>
>
> Pronouns: he/him/his
>
> “Who's ready to make some science?” – Cave Johnson
> > From: main_at_ammrl.groups.io on behalf of DrSpin <rajanp_at_uw.edu>
> Sent: Friday, February 16, 2024 2:06 PM
> To: ammrl_at_groups.io
> Subject: [AMMRL] Homospoil gradient question...might be a bit obscure !
>
> Dear Spinners
> In the outset, due apologies if I am transmitting a silly question
> through this venerable platform and taking up your time. As this is the
> last water hole in the Savannah to turn to when it comes to our trade, I am
> nevertheless hazarding this query.
>
> I have an old system i.e. AV-I operating at 200 MHz (old by today's standards,
> surely) coupled with an older probehead that doesn't have a gradient coil.
> This is a busily used instrument in the teaching lab, initiating the young
> undergrad Padawans to the wonders of magnetic resonance and show them the
> way to become Jedi Knights (gulp !).
>
> The problem: What I need to solve is to suppress the rather large water
> peak in one type of samples with anything other than the presat technique.
> As a benchmark, I used Bruker stock pulse program "zggpjrse" and it gives
> beautiful results in a system with gradients.
>
>
> I modified this program "zggpjrse" i.e. by removing the gradients, and I
> get results with limited success.
>
> Since the gradients seem to play such a crucial role, I wanted to explore
> any possible options. I have noticed this SMB connector in the SCB boards
> of this vintage that is marked as 'homospoil start'.
>
> Question: Do any of you know/recall the way we can use an input trigger
> to the SCB to initiate a spoil gradient from within the pulse program and
> use this as the poor person's way of generating a large enough Z-gradient
> using the shim stack, which should be adequate in a simple 1D implementation
> like the one I am envisaging ?
>
> If I am not mistaken, old timers in the group probably played with the homospoil
> feature to tame solvent peaks like this before probes with gradient coils
> became a given.
>
> thank your for your valuable time.
>
> Best
> Rajan
>
> --
> ____________________________________
> Rajan K Paranji, Ph.D. NMR Services Manager Department of Chemistry Room 65,
> Bagley Hall University of Washington Seattle, WA 98195 phone : 206 685 2581
> fax: 206 685 8665 email: rajanp_at_uw.edu <mailto:rajanp_at_uw.edu>
> _____________________________________
>
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Received on Mon Feb 19 2024 - 05:08:00 MST