Liquid Crystalline Polymer–Co Nanorod Hybrids: Structural Analysis and Response to a Magnetic Field

Ophélie Riou (1, 2) , Barbara Lonetti (1) , Patrick Davidson (3) , Reasmey Phary Tan (2) , Benoit Cormary (2) , Anne-Françoise Mingotaud (1) , E. Di Cola (4) , Marc Respaud (2) , Bruno Chaudret (2) , Aikaterini Soulantika (2) , Monique Mauzac (1)

1 IMRCP - Interactions moléculaires et réactivité chimique et photochimique
2 LPCNO - Laboratoire de physique et chimie des nano-objets
3 LPS - Laboratoire de Physique des Solides
4 ESRF - European Synchrotron Radiation Facility

This work deals with the structural analysis of side-chain liquid crystalline polysiloxanes, doped with magnetic cobalt nanorods, and their orientational properties under a magnetic field. These new materials exhibit the original combination of orientational behavior and ferromagnetic properties at room temperature. Here we show that, within the liquid crystal polymer matrix, the cobalt nanorods self-assemble in bundles made of nanorod rows packed in a 2-dimensional hexagonal lattice. This structure accounts for the magnetic properties of the composites. The magnetic and orientational properties are discussed with respect to the nature of the polymer matrix.

Domaines: Chimie

Ophélie Riou, Barbara Lonetti, Patrick Davidson, Reasmey Phary Tan, Benoit Cormary, et al.. Liquid Crystalline Polymer–Co Nanorod Hybrids: Structural Analysis and Response to a Magnetic Field. Journal of Physical Chemistry B, 2014, 118 (11), pp.3218-3225. ⟨hal-02025975⟩