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Journée Nanomachines – Séminaire Chimie ED459

Making the tiniest machines / STM, nanovehicles and molecular motors

Deux conférences : Prof. David Leigh (Univ. Manchester, UK), Prof. Gwénaël Rapenne (CNRS, Univ. Toulouse)

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Le Jeudi 18 Avril 2013 à 13h45 (G. Rapenne) et 15h (D. Leigh)
UM2, salle de cours SC-16.01

Au cours d’une séance exceptionnelle consacrée à la chimie supramoléculaire et aux nanomachines, nous accueillons deux conférenciers :

1. à 13h45 : Prof. Gwénaël Rapenne (NanoSciences Group, CEMES – Centre d’Élaboration des Matériaux et d’Études Structurales, UPR 8011 CNRS, Université de Toulouse) :
Scanning tunneling microscope a fantastic tool to control mechanical nanomachines : nanovehicles and molecular motors

(résumé ci-après – cette conférence sera donnée en français)

2. à 15h00 : Prof. David Leigh (Department of Chemistry, University of Manchester, UK) :
Making the tiniest machines

(résumé non communiqué)

Contact local IBMM : Dr. Frédéric Coutrot (équipe SMART)


Scanning tunneling microscope a fantastic tool to control mechanical nanomachines : nanovehicles and molecular motors

Prof. Gwénaël Rapenne (NanoSciences Group, CEMES – Centre d’Élaboration des Matériaux et d’Études Structurales, UPR 8011 CNRS, Université de Toulouse)

In the macroscopic world, the movement of rotation is at the source of many examples of machines and motors. Recent advances in the imaging and manipulation of single molecules has stimulated much interest in the synthesis of molecules exhibiting unique mechanical properties. Technomimetic molecules[1] are molecules designed to imitate macroscopic objects at the molecular level, also transposing the motions that these objects are able to undergo. In this talk we will present the preparation and single-molecule study on functional nanovehicles i.e. molecular vehicles capable to transport a cargo and unidirectional molecular motor.

The nanovehicles[2] with two (wheelbarrow in this case) or four triptycene[3] wheels are assemble around a polycyclic aromatic hydrocarbon platform. The molecular motor[4] is built around a ruthenium center coordinated to a cyclopentadienyl ligand terminated with fiveferrocene electroactive groups. The synthesis of the motor will be presented as well asvariable temperature NMR experiments, STM study and electrochemistry studies showing thecontrol of the unidirectional rotation[5].

Figure 1 (cliquer pour l’agrandir)

Figure 1. An exemple of nanovehicle with four triptycene wheels ; and a ruthenium complex molecular motor on the gold surface with a unidirectional rotation.

References :

1. (a) G. Rapenne, Org. Biomol. Chem. 2005, 3, 1165 ; (b) C. Joachim, G. Rapenne, ACS Nano 2013, 7, 11.
2. (a) L. Grill, F. Moresco, G. Rapenne, S. Stojkovic, X. Bouju, C. Joachim, Nature Nanotech. 2007, 2, 95 ; (b) G. Rapenne, G. Jimenez-Bueno, Tetrahedron 2007, 63, 7018.
3. H. P. Jacquot de Rouville, R. Garbage, R. E. Cook, A. R. Pujol, A. M. Sirven, G. Rapenne, Chem. Eur. J. 2012, 18, 3023.
4. G. Vives, H. P. Jacquot de Rouville, A. Carella, J. P. Launay, G. Rapenne, Chem. Soc. Rev. 2009, 38, 1551.
5. U. G. E. Perera, F. Ample, H. Kersell, Y. Zhang, J. Echeverria, M. Grisolia, G. Vives, G. Rapenne, C. Joachim, S.-W. Hla, Nature Nanotech. 2013, 8, 46.


Making the tiniest machines

Prof. David Leigh (Department of Chemistry, University of Manchester, UK)

(abstract not communicated)

D. Leigh Research group website : www.catenane.net/

Selected publications :

  • Sequence-specific peptide synthesis by an artificial small-molecule machine
    B. Lewandowski, G. De Bo, J. W. Ward, M. Papmeyer, S. Kuschel, M. J. Aldegunde, P. M. E. Gramlich, D. Heckmann, S. M. Goldup, D. M. D’Souza, A. E. Fernandes & D. A. Leigh, Science 2013, 339, 189-193.
  • A synthetic molecular pentafoil knot.
    J.-F. Ayme, J. E. Beves, D. A. Leigh, R. T. McBurney, K. Rissanen & D. Schultz, Nature Chem. 2012, 4, 15-20.
  • A synthetic small molecule that can walk down a track.
    M. von Delius, E. M. Geertsema & D. A. Leigh, Nature Chem. 2010, 2, 96-101.
  • Second generation specific-enzyme-activated rotaxane propeptides.
    A. Fernandes, A. Viterisi, V. Aucagne, D. A. Leigh & S. Papot, Chem Commun. 2012, 48, 2083-2085.

Agenda

séminaire

  • Jeudi 18 avril 2013 13:45-16:15 -

    Making the tiniest machines / STM, nanovehicles and molecular motors

    Résumé : Séminaires Chimie ED459 – Gwénaël Rapenne (13:45) / David Leigh (15:00)

    Lieu : UM2, salle SC-16.01


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