Apr 17, 2019

[NMR] PhD in computational spin dynamics

Peter Hore peter.hore@chem.ox.ac.uk via listes.univ-paris-diderot.fr 

PhD in computational spin dynamics at the Universities of Oxford and Oldenburg

We are seeking a graduate student with experience of, or an interest in, computational NMR or EPR who might be nervous of committing to a PhD in Brexit Britain but who would still welcome a strong connection to a leading UK university.

Based in the Department of Physics at the University of Oldenburg, Germany, the student will be supervised by Peter Hore (Department of Chemistry, University of Oxford). The position is funded by the DFG (https://www.sfb1372.de/) as part of Sonderforschungsbereich 1372: Magnetoreception and navigation in vertebrates: from biophysics to brain and behaviour. Further details can be found at: https://www.sfb1372.de/sig01-2.

For informal enquiries please email peter.hore@chem.ox.ac.uk.

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[NMR] PhD position at University of Lille - Solid-state NMR of optoelectronic materials #DNPNMR

University of Lille invites applications for a 3-year PhD position in the area of solid-state NMR of optoelectronic materials. The research project, funded by the University of Lille and the region Haute-de-France, will start from 1 October 2019. PhD student will be supervised by Dr. Manjunatha Reddy in close collaboration with Dr. Laurent Delevoye and Prof. Olivier Lafon at the Department of Chemistry, Solid-State Chemistry Division.

Send your application as a single pdf containing cover letter, CV and references, and transcripts directly to gnm.reddy@univ-lille.fr ; laurent.delevoye@univ-lille.fr ; olivier.lafon@univ-lille.fr before 31 May 2019. To be considered for this PhD positon the applicant must have (i) completed Master’s degree in Chemistry, Physics or Material Science by August 2019, (ii) experience in synthesis of hybrid materials into thin films and analyses by surface and bulk characterization techniques, and (iii) excellent communication skills in English. Proficiency in French language is a plus but not obligatory. For informal queries about the position please contact gnm.reddy@univ-lille.fr

Research project and objectives: The quest for developing high-performance materials for optoelectronics applications is growing faster than ever. Last decade has seen a spike in the development of π-conjugated materials and hybrid perovskite halides as low-cost and efficient solar absorbers, enabling power conversion efficiencies over 15% and 23%, respectively. Such advancements in material syntheses necessitate the requirement for in-depth analyses of reactive heterogeneous surfaces and interfaces, particularly at high sensitivity and resolution. The objectives of this project are to develop and acquire deep new understandings of structure-function relationships in optoelectronic materials. Notably, low-dimensional hybrid perovskite halides will be synthesized in the form of layered structures by incorporating organic and inorganic building blocks. The key is to combine solvothermal synthesis with in situ or ex situ solid-state NMR characterization techniques so as to gai!
n insight into the evolution of molecular order at organic-inorganic interfaces. Complementary information on the material compositions and structures will be obtained by X-ray and neutron scattering techniques, surface probes (electron microscopy and X-ray photoelectron spectroscopy) and depth profiling using secondary-ion mass spectrometry (SIMS). All of these fundamental understandings will be used to rationalize the material design in order to augment the stability, performance and propensity towards enhanced optical and electronic properties.

Host laboratory and infrastructure: Research will be carried out at the Department of Chemistry – Solid-state Chemistry Division, University of Lille. City of Lille is located in northwestern France, easily accessible from/to Paris, Brussels and London by train. Department of Chemistry offers excellent training courses and hosts state-of-the-art research facilities; synthesis chemistry apparatus and analytical facilities for surface and bulk characterization of materials. Of particularly relevant to this project, NMR center in Lille is equipped with high field (800 and 900 MHz) spectrometers and placed an order for a 1.2 GHz spectrometer for the characterization of material solids, which is a unique opportunity to undertake this interdisciplinary research project. 

Regards,

G. N. Manjunatha Reddy
Assistant Professor of Chemistry
Solid-State Chemistry Division
Ecole Nationale Supérieure de Chimie de Lille
Cité Scientifique, 218 Bâtiment C7-BP 90108
Villeneuve D'Ascq 59650 
France
Tel: +33 (0)3 2033 5907


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[NMR] Reminder: Spin Chemistry Meeting 2019

Dear colleagues,

This is a gentle reminder about the 16th International Symposium on Spin and Magnetic Field Effects in Chemistry and Related Phenomena (Spin Chemistry Meeting 2019), which will be held in Saint Petersburg, Russia on August 18-22, 2019.

Spin Chemistry Meeting is biannual international conference. It is a well-established forum to exchange knowledge and latest scientific results in the field of spin chemistry and related areas of research including applications in spintronics, material science and biology. The scientific program of the Conference will include plenary lectures, invited lectures, oral talks and poster sessions. Presentations will be organized in the following thematic sections:

  • Magnetic field effects
  • Hyperpolarized nuclear magnetic resonance
  • Hyperpolarized electron paramagnetic resonance
  • Novel material and spintronics
  • Theory of spin effects in chemistry

We are also planning to have a one-day spin chemistry tutorial on August 18, 2019.

Previous Spin Chemistry Meetings were held Tomakomai, Japan (1991); Konstanz, Germany (1992); Chicago, USA (1994); Novosibirsk, Russia (1996); Jerusalem, Israel (1997); Emmetten, Switzerland (1999); Tokyo, Japan (2001); Chapel Hill, USA (2003); Oxford, UK (2005); San Servolo, Italy (2007); St Catharines, Canada (2009); Noordwijk, The Netherlands (2011); Bad Hofgastein, Austria (2013); Kolkata, India (2015); Schluchsee, Germany (2017).

To learn more about the conference, please visit web-page


We let you know that practical information concerning registration and accommodation has been updated. If you have questions, please contact us using the email address: scm2019@tomo.nsc.ru

We look forward to seeing you in Saint Petersburg,

Konstantin Ivanov, on behalf of the Organizing Committee of Spin Chemistry Meeting 2019.

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Microscale Hyperpolarization #DNPNMR

Kiss, Sebastian, Lorenzo Bordonali, Jan G. Korvink, and Neil MacKinnon. “Microscale Hyperpolarization.” In Micro and Nano Scale NMR, by Jens Anders and Jan G. Korvink, 297–351. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018.
 

Magnetic resonance (MR) is a tremendously powerful technique for obtaining both structural and dynamical information noninvasively and with atomic resolution. The primary limitation of MR is sensitivity, with the detected resonant exchange of energy dependent on population differences on the order of tens of parts per million as dictated by Boltzmann statistics. The MR community has implemented various strategies to overcome this inherent limitation, including maximizing the static polarizing magnetic field and cooling the probe electronics. As discussed throughout this book, an alternative strategy is to miniaturize the MR detector in order to maximize resonant energy exchange efficiency between the sample and the instrument electronics. In this chapter, we discuss approaches that aim to overcome Boltzmann population statistics. These hyperpolarization techniques rely on the transfer of a large polarization source to the target nuclear spin system, or the preparation of pure spin states that are transferred into the target spin system. The archetypal example of the former case is dynamic nuclear polarization (DNP), whereas in the latter case para-hydrogen and optically pumped 3He or 129Xe are examples. 

Apr 15, 2019

Essential but sparse collagen hydroxylysyl post-translational modifications detected by DNP NMR #DNPNMR

Chow, Wing Ying, Rui Li, Ieva Goldberga, David G. Reid, Rakesh Rajan, Jonathan Clark, Hartmut Oschkinat, Melinda J. Duer, Robert Hayward, and Catherine M. Shanahan. “Essential but Sparse Collagen Hydroxylysyl Post-Translational Modifications Detected by DNP NMR.” Chemical Communications 54, no. 89 (2018): 12570–73.


The sparse but functionally essential post-translational collagen modification 5-hydroxylysine can undergo further transformations, including crosslinking, O-glycosylation, and glycation. Dynamic nuclear polarization (DNP) and stable isotope enriched lysine incorporation provide sufficient solid-state NMR sensitivity to identify these adducts directly in skin and vascular smooth muscle cell extracellular matrix (ECM), without extraction procedures, by comparison with chemical shifts of model compounds. Thus, DNP provides access to the elucidation of structural consequences of collagen modifications in intact tissue.

Apr 13, 2019

[NMR] Fwd: Technical/Scientific collaborator position in magnetic resonance at the University of Freiburg, Germany #EPR




Objet: Technical/Scientific collaborator position in magnetic resonance at the University of Freiburg, Germany

Date: 12 avril 2019 à 21:43:58 UTC+2

Dear colleagues,


Applications are invited for the post of technical/scientific collaborator to be held in the Institute of Physical Chemistry at the University of Freiburg, with effect from 1 July 2019. The appointment is full time and based on an indefinite term contract (salary according to TV-L E13). The successful candidate will be responsible for the technical administration and management of the magnetic resonance laboratories (NMR and EPR). S/he should have earned a university degree and hold a doctorate in either chemistry or physics. An excellent knowledge of magnetic resonance instrumentation for the development of home-built spectrometers and probe heads (in collaboration with the local electronics and mechanics workshops) and the operation and maintenance of the NMR and EPR instruments of the institute (including the lasers used for transient experiments), is required. The candidate is further expected to have vast experience with the measurement, analysis and interpretation of NMR and EPR spectra. Queries about the post and applications (including a letter of motivation, CV, and degree certificates with grades in a single PDF file), stating the job reference number 00000446, should be addressed to Prof. Dr. Stefan Weber, Albertstr. 21, 79104 Freiburg; E-mail: stefan.weber@physchem.uni-freiburg.de.

The closing date for applications is 24 April 2019. For further details, please see: http://www.uni-freiburg.de/verwaltung/stellenboerse/00000446 (only in German)


Kind regards,
Stefan Weber
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Apr 12, 2019

PhD position in DNP methodology in Paris, France #DNPNMR

A PhD position is available in the NMR group of the Laboratoire des biomolécule, located in the chemistry department of the Ecole Normale Supérieure in Paris, France.

Dynamic nuclear polarisation (DNP) techniques provide unprecedented NMR signal enhancement (by several orders of magnitude) and has made possible experiments that were until recently impossible to achieve by conventional methods. In conditions of very high polarisation, the interaction between the large sample magnetisation with the detection circuit leads to nonlinear behaviour (« radiation damping », maser effect, dipolar field effects).

Very unusual NMR signals have been observed in the solid state at liquid helium temperatures (~1.2 K), that exhibit typical multiple maser effects at short times (< ~100 ms) on the one hand, and persistence for tens of seconds on the other hand, (when solid-state NMR signals are typically expected to last no more than ~500 microsecond).

These signals reflect the combination between complex processes of different nature, involving nonlinearities of the magnetization dynamics and DNP.

The PhD student will in particular:

- contribute to the construction and the implementation of the maser control unit on both polarizers (6.7 T and 9.4 T) in use in the lab;

- perform controlled maser experiments in various experimental conditions in order to access the details of the DNP process;

- contribute to the analysis of the data using various models, through simulations or theoretical calculations;

- contribute to the application of the developed instrumentation to optimize hyperpolarization DNP sequences and their integration in dissolution-DNP experiments.

Applicants should preferably have a physics or chemical physics background (significant knowledge in quantum mechanics will be valued), with a strong interest for both fundamental and applied aspects of magnetic resonance.

The NMR team of the Laboratoire des biomolécules (located in part in the chemistry department at ENS-Paris) is strongly methodology-oriented, in various aspects of NMR. The group is equipped with a 800 MHz spectrometer (liqui/solid/micro-imaging), a 600 MHz spectrometer (liquid/high-resolution relaxometry and two-field NMR), a 400 MHz spectrometer (liquid /solid) and two polarizers for dissolution-DNP (6.7 T and 9.4 T)

The position is for 36 months, and the net monthly salary will be about 1400 €.To apply, please send a CV, a cover letter, and the names of two potential referees who could be contacted to provide a supporting letter, to Daniel Abergel (daniel.abergel@ens.fr)

A publication list of the team is available on the website http://www.paris-en-resonance.fr/

-- Daniel Abergel, MD, PhD Laboratoire des Biomolécules UMR7203 Département de Chimie Ecole Normale Supérieure 24, rue Lhomond, 75005 Paris Tel. : +33 1 44 32 32 65 email : daniel.abergel@ens.fr

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