Sunday, May 1, 2016

[NMR] PhD fellowship #DNPNMR

From the Ampere Magnetic Resonance List



Laboratory: Aix Marseille University/CNRS, Institut de Chimie Radicalaire (UMR 7273)

Thesis supervisor: Pr. Stéphane VIEL

Co-supervisor: Dr. Giulia MOLLICA

Title: Development of new methods for the preparation of solid samples for the NMR analysis of synthetic polymers using dynamic nuclear polarisation.

Description: The knowledge of the structure-property relationships in polymer materials is fundamental to understand and predict their macroscopic applications and aging behavior. In this context, NMR appears as a viable option because it is a non-destructive technique that can study polymer materials in the solid-state with atomic resolution, and access their supramolecular structure over a large range of molecular weights without the need of translational order. However, this information is often hindered by the low sensitivity of NMR. Recently, we have shown how such inherent limitation could be strongly alleviated with the help of Dynamic Nuclear Polarization (DNP), which enhances solid-state NMR sensitivity by transferring the electron spin polarisation of exogenous paramagnetic sources to nuclei via microwave irradiation of the sample at cryogenic temperature. Notably, our work has shown the strong potential of DNP for the structural elucidation of functional polymers, but has also revealed that the sample preparation methods currently available for DNP are far from being optimal in the case of polymeric materials. The aim of this work is to develop new efficient methods for DNP sample preparation by exploiting technologies borrowed from process engineering for the analysis of functional polymeric materials by DNP NMR.

References

1. Ouari, O.; Phan, T.; Ziarelli, F.; Casano, G.; Aussenac, F.; Thureau, P.; Gigmes, D.; Tordo, P.; Viel, S., ACS Macro Lett. 2013, 2, 715.

2. Ziarelli, F.; Casciola, M.; Donnadio, A.; Pica, M.; Sauvée, C.; Aussenac, F.; Capitani, D.; Viel, S., Chem. Commun. 2014, 50, 10137.

3. Le, D.; Casano, G.; Phan, T. N. T.; Ziarelli, F.; Ouari, O.; Aussenac, F.; Thureau, P.; Mollica, G.; Gigmes, D.; Tordo, P.; Viel, S., Macromolecules 2014, 47, 3909.

4. Le, D.; Ziarelli, F.; Phan, T. N. T.; Mollica, G.; Thureau, P.; Aussenac, F.; Ouari, O.; Gigmes, D.; Tordo, P.; Viel, S., Macromol. Rapid Comm. 2015, 36, 1416.

5. Mollica, G.; Le, D.; Ziarelli, F.; Casano, G.; Ouari, O.; Phan, T. N. T.; Aussenac, F.; Thureau, P.; Gigmes, D.; Tordo, P.; Viel, S., ACS Macro Lett. 2014, 3, 922.

6. Mollica, G.; Dekhil, M.; Ziarelli, F.; Thureau, P.; Viel, S., Angew. Chem. Int. Ed. 2015, 54, 6028.

7. Besson, E.; Ziarelli, F.; Bloch, E.; Gerbaud, G.; Queyroy, S.; Viel, S.; Gastaldi, S., Chem. Commun. 2016, 52, 5531.

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Procedure: All the necessary information is reported here: http://www.edsc250.univ-cezanne.fr/recrutement/modalites.html

Applicants should provide:

- a cover/motivation letter
- a CV
- personal details (by filling the form available through the web link provided above)
- a reference letter from the master supervisor (in a sealed envelop)
- the master grades obtained (M1 and M2 levels)

All information must be sent to Stéphane VIEL (s.viel@univ-amu.fr)

In case your application is successful, you will be required to attend an oral examination by the Doctoral School of Chemistry (ED250) which will take place May 31, 2016. The final ranking will determine the appointment for a doctoral research fellowship of 3 years.

For all complementary information, please contact: Stéphane VIEL (s.viel@univ-amu.fr or +33 4 91 28 89 02).

Sincerely

Stéphane VIEL



Cordialement,


Stéphane Viel - Professeur des Universités - ICR Institut de Chimie Radicalaire (UMR CNRS 7273)
Aix-Marseille Université - Service 512 - ST JEROME - Avenue Escadrille Normandie Niemen - 13013 Marseille
Tél: +33(0)4 91 28 89 02 - Mobile : +33(0)6 68 27 29 01
Afin de respecter l'environnement, merci de n'imprimer cet email que si nécessaire.

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