Serveur des thèses de l'Université de Strasbourg

Morphological switching and constitutional dynamics

ULRICH, Sébastien (2008) Morphological switching and constitutional dynamics. Thèses de doctorat, Université Louis Pasteur.

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Abstract

The thesis concerns the relationship between molecular morphology and self-organization and puts the hypothesis that self-organization is determined by the morphology of the molecules from the medium. Metallo-controlled morphological switches, i.e. molecules being able to adopt different conformations depending on whether or not a metal ion is present, were designed and synthesized. Complexation/decomplexation processes then induce a morphological switching. The formation, from these tools, of dynamic systems was used to demonstrate that the constitution of a self-assembled system at thermodynamic equilibrium depends on the morphological state of these molecules. It thus demonstrated that molecular morphology determined the assemblies expressed by the system. The use of morphological switching processes makes it possible to reversibly switch a whole system between different constitutional states, polymers and macrocycles for instance, thus demonstrating an adaptive behavior of the system which reacts to morphological constraints. Functional systems were designed and it was demonstrated that the use of morphological switches allow to control the function expressed by the system. It thus showed the tremendous potential of this methodology of developing constitution-function relationships and demonstrated the need to be able to control the constitution of dynamic systems. This work demonstrates that molecular morphology is an information which can be used to control the constitution of functional dynamic systems. This reveals a mechanism through which matter can evolve and self-organize in order to express the species which fit best with the applied constraints.

Item Type:Thesis
Uncontrolled Keywords:Chimie dynamique constitutionnelle ; commutateurs ; morphologie ; réaction covalente réversible ; auto-assemblage ; pince moléculaire ; polymère dynamique ; macrocycle
Subjects:CL Classification > DDC Dewey Decimal Classification > 500 Sciences de la nature et mathématiques > 540 Chimie, minéralogie, cristallographie > 547 Chimie organique > 547.7 Macromolécules et composés connexes
Classification Thèses Unistra > Sciences, technologies > Sciences de la nature et mathématiques > 540 Chimie, minéralogie, cristallographie > 547 Chimie organique > 547.7 Macromolécules et composés connexes

UNERA Classification UNERA > ACT Domaine d'activité UNERA > ACT-3 Chimie, matériaux, plasturgie
CL Classification > DDC Dewey Decimal Classification > 500 Sciences de la nature et mathématiques > 540 Chimie, minéralogie, cristallographie > 547 Chimie organique > 547.8 Substances fossiles, polymères, fibres artificielles, colorants
Classification Thèses Unistra > Sciences, technologies > Sciences de la nature et mathématiques > 540 Chimie, minéralogie, cristallographie > 547 Chimie organique > 547.8 Substances fossiles, polymères, fibres artificielles, colorants

UNERA Classification UNERA > DISC Discipline UNERA > DISC-20 Physique, chimie, matériaux
ID Code:1547
Deposited On:15 January 2009

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