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Moteurs Moléculaires Cristallins Photo-pilotés

Abstract : Light offers attractive opportunities for controlling physical and chemical functions in the solid state. This thesis is concerned with the design of cristalline molecular solids where the dielectric response and collective dynamics of molecular gyroscopes is induced and controlled with polarized laser light. The molecular design elements are two-fold and involve (i) a comprehensive organic synthesis approach of symmetrically and dissymetrically-functionalized rotor and axles based on the 1,4-diethynylbicyclo[2,2,2]octane core component and (ii) a rational choice of structure-directing outer functional groups allowing for the construction of low dimensional architectures whose self-assembly rely on non-covalent, hydrogen and halogen bonding interactions as well as covalent metal coordination principles and whose crystal strutures have been systematically determined and analyzed. In addition to both temperature dependent high-resolution solid state CP/MAS and single crystal NMR qualifying the rotor dynamics, the non linear optical response of single crystals was systematically explored allowing to discover a photo-induced driving principle qualifying a series a single crystalline, three-propellers molecular light turbines and demonstrate a mechanism for switching these molecular motors on and off with light.
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Submitted on : Friday, March 15, 2013 - 2:38:00 PM
Last modification on : Monday, October 19, 2020 - 11:08:03 AM
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  • HAL Id : tel-00801226, version 1


Cyprien Lemouchi. Moteurs Moléculaires Cristallins Photo-pilotés. Chimie organique. Université d'Angers, 2010. Français. ⟨tel-00801226⟩



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