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Article Dans Une Revue Chemistry - A European Journal Année : 2007

Constitutional self-organization of adenine-uracil-derived hybrid materials

C. Arnal-He'Rault
  • Fonction : Auteur
M. Barboiu
A. Pasc
M. Michau
  • Fonction : Auteur
A. van Der Lee

Résumé

The alkoxysilane nucleobase adenine (A) and uracil (U) precursors described in this paper generate in solution a complex library of hydrogenbonded aggregates, which can be expressed in the solid state as discrete higher oligomers. The different interconverting outputs that nucleobases may form by oligomerization define a dynamic polyfunctional diversity that may be "extracted selectively" in solid state by sol-gel transcription, under the intrinsic stability of the system. After he sol-gel process, unique constitutional preference for specific geometries in hybrid materials is consistent with a preferential arrangement of nucleobase systems, favoring the self-assembly by the Hoogsteen geometry. FTIR and NMR spectroscopy and -ray powder diffraction experiments demonstrate the formation of self-organized hybrid supramolecular materials. Electron microscopy reveals the micrometric platelike morphology of the hybrid materials. The MA-U hybrid material is nanostructured in ordered circular domains of 5 nm in diameter of alternative light and dark rows with an one-dimensional periodicity of 3.5 A°.

Domaines

Matériaux
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Dates et versions

hal-00434116 , version 1 (20-11-2009)

Identifiants

  • HAL Id : hal-00434116 , version 1

Citer

C. Arnal-He'Rault, M. Barboiu, A. Pasc, M. Michau, Pascal Perriat, et al.. Constitutional self-organization of adenine-uracil-derived hybrid materials. Chemistry - A European Journal, 2007, pp.6792-6800. ⟨hal-00434116⟩
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