David DJURADO

Structure et Propriétés d'Architectures Moléculaires

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 Directeur de Recherches au CNRS

Deputy Head of LEMOH

Laboratoire d'Electronique Moléculaire Organique & Hybride

(Head: Peter Reiss)

Research Interests

Structure and Dynamics of small and high mass pi-conjugated (macro)molecules- Transport properties of organic semiconductors- Magnetism in conjugated molecules and polymers.

 

 

 

Principal technics of investigation: X-ray and neutron. SCLC transient measurements. SQUID magnetic measurements.

Short CV

Works in CNRS since 1981. Has studied mostly structure, dynamics and transport properties in organic systems as organic charge transfer salts, poly(phthalocyanine)s, graphite intercalation compounds, fullerenes, conducting polymers as poly(acetylene), poly(thiophene) and mostly during these last years, poly(aniline). The highlights which can be cited concern the evidencing of staging in doped poly(acetylene) with alkali metals by carrying out in situ X-ray diffraction measurements and electrochemical doping. This has been performed during a post-doctoral position in University of Pennsylvania (Philadelphia - USA 1998-1990). More recently it has been established that the lattice dynamics in conducting poly(aniline)s protonated with sulfonic acids plays a crucial role in stabilizing the high conducting state.

 Experienced user of various techniques as solid state NMR, EPR, X-ray and neutron diffraction measurements, Small Angle X-ray and neutron scattering, incoherent inelastic and quasi-elastic neutron scattering techniques.

Is member of Organizing Committee of European HERCULES course (Director of Studies) and gives a ten hour lesson in Master 2 on Polymers about the methods of investigations of polymers.

Has 110 papers accepted in international reviews and has been invited speaker in 18 international conferences, 7 national conferences and has given 14 invited seminars in 5 different countries.

In between May 2004 and January 2009, he was the head of Laboratoire d'Electronique Moléculaire Organique et Hybride which is a part of SPrAM associated research unity with CEA, CNRS and University J. Fourier of Grenoble I. He is now assisting P. Reiss the new head of the LEMOH. This laboratory is an interdisciplinary one collecting chemists and physicists working together to elaborate new molecules, oligomers, polymers and hybrid systems (organic + inorganic nano-objects as semiconducting nanocrystals or silicon nanowires) dedicated to (opto)electronic applications. This laboratory is composed of 14 permanent scientists and technicians and welcomes each year between 15 and 20 persons occupying temporary positions as PhD students, post-doc fellows and other trainees.

 

Some recent publications

Molecular dynamics in conducting polyaniline protonated by camphor sulfonic acid as seen by quasielastic neutron scattering

D. Djurado, J. Combet, M. Bée, P. Rannou, B. Dufour, A. Pron,  J. P. Travers.

Phys. Rev. B. 65 (2002) 184202 (1-13)

Molecular dynamics in plastic conducting compounds of polyaniline

D. Djurado, M. Bée, M. Gonzalez, C. Mondelli, B. Dufour, P. Rannou, A. Pron,J.P. Travers

Chem. Phys. 292 (2003)355-362.

Direct analysis of lamellar structure in polyaniline protonated with plasticizing dopants

M. Sniechowski, D. Djurado, B. Dufour, P. Rannou, A. Pron, W. Luzny

Synth. Metals 143 (2004) 163-169.

Effect of macromolecular parameters and processing conditions on supramolecular organisation, morphology and electrical transport properties in thin layers of regioregular poly(3-hexylthiophene).

J.M. Verilhac, G. Le Blevennec, D. Djurado, F. Rieutord, M. Chouiki, J.P. Travers, A. Pron

Synth. Met. 156(2006)815-823.

Ferromagnetic Spins Interaction in Poly(m-p-aniline).

I. Kulszewicz-Bajer, J. Gask, M. Pawlowski, S. Gambarelli, D. Djurado, A. Twardowski

J. Phys. Chem. B Lett 111 (2007) 9421-9423

Magnetic field dependent magnetization of a conducting plasticized poly(aniline) film

D. Djurado, A. Pron, J.P. Travers, J.G.S. Duque, P.G. Pagliuso, C. Rettori, D.L. Chingalia, L. Walmsley

J. Phys. Cond. Matter 20 (2008) 285228. 

Electroactive Materials for Organic Electronics: Preparation Strategies, Structural Aspects and Characterization techniques

A. Pron, P. Gawrys, M. Zagorska, D. Djurado, R. Demadrille.

Chem. Soc. Rev. 39 (2010) 2577-2632. 

Magnetic properties of a doped linear polyarylamine bearing a high concentration of coupled spins (S = 1)

V. Maurel, M. Jouni, P. Baran, N. Onofrio, S. Gambarelli, J.M Mouesca, D. Djurado, L. Dubois,

J.F. Jacquot, G. Desfonds and I. Kulszewicz-Bajer

Phys. Chem. Chem. Phys., 14(2012) 1399-1407.

Comparison of simulations to experiment for a detailed analysis of space-charge-limited transient current measurements in organic semiconductors

M. Z. Szymanski, I. Kulszewicz-Bajer, J. Faure-Vincent and D. Djurado

Phys. Rev. B 85 (2012) 195205 (8 pp).

More scientific publications

see   http://inac.cea.fr/Publications/index.php

 

Teaching:

Tehnics of Investigation of Polymers: One  teaching  module of the Research Master  entitled Polymers for Advanced Technologies.

Divers:

Member of the   Organisation Comitee (director of studies) of the European school  HERCULES dedicated to the formation for using large facilities (synchrotron radiation and neutrons)

 

 

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